2022년 3월 24일 목요일

Market Trend And Demand The Market Value Of Lithium Iron Phosphate Picked Up Obviously Will Affact The Value Of Titanium Alloy_products_hiphopgalaxy Com

Market Trend And Demand The Market Value Of Lithium Iron Phosphate Picked Up Obviously Will Affact The Value Of Titanium Alloy_products_hiphopgalaxy Com The estimate deduced from the outcomes of Köppers et al. and Shang et al. is mentioned in §3a. Self-interstitial formation energies in α-Ti computed right here in contrast with Vérité et al. . The melting level and boiling ppoints are each greater in vanadium however the one disadvantage is that vanadium's density is 6.00 whereas scandium is 2.99. Have you examined the behavior of the new nano-alloy when it's exposed to extremes of pressure ? I am additionally excited about the way it behaves when bombarded by both high vitality photons and particles. Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the out there data) and Abstracts Views on Vision4Press platform. Yield energy of commercially pure titanium – Grade 2 is about 300 MPa. Hydrogen can be absorbed by titanium alloys and might cause issues if levels exceed specified quantities. Hydrogen absorption, unlike that of oxygen, just isn't always confined to the floor. The greatest set of mechanical properties, though with an incomplete precipitation of intergranular alpha phase, was demonstrated for the microstructure of Beta-C alloy that was aged at 455°C. The crystals of alpha precipitates in the AG550 sample are relatively small and evenly dispersed compared to that in AG590 pattern . The finer grain structure of AG550 sample produced better power than the AG590 sample that contained comparatively larger crystals of the alpha part. Uniform fit-up minimizes burn-through and controls underbead contour. Poor fit-up may increase the potential of contamination from air trapped in the joint, particularly with butt joints on mild gauge material. Clamping to forestall joint movement throughout welding is beneficial. If tack welds are used, the identical care in cleansing and inert fuel shielding have to be exercised, as with all and all titanium welds, to forestall contamination. Any cracked or contaminated tack welds have to be removed earlier than last welding. It was developed in the Fifties and contains 90% titanium, 6% aluminum and 4% vanadium. Most of the world's energy calls for are still being met by burning fossil fuels, thereby releasing carbon dioxide into the environment. The energy system is in the midst of a transition to renewable sources such as photo voltaic and wind power, however it will be fairly a while before fossil fuels are only a minor part of power production. To scale back international warming, it will be essential to prevent the carbon dioxide from fossil fuels from getting into the atmosphere by capturing it and both locking it away or making use of it. [newline]With advanced safety applied sciences like Face ID, Touch ID, and distinctive transaction codes, Apple Card with Apple Pay is designed to verify you're the only one who can use it. And whereas Goldman Sachs makes use of your knowledge to operate Apple Card, your transaction history and spending habits belong to you and you alone. Your knowledge isn't shared or offered to third parties for advertising or promoting. Coated inserts and YT-type cemented carbide could have a violent affinity with titanium alloys, which will aggravate the bonding and put on of instruments, and aren't suitable for slicing titanium alloys. Commonly used warmth treatment methods are annealing, solid solution and getting older treatment. Annealing is to get rid of internal stress, enhance plasticity and structural stability, and acquire higher total performance. Usually (α+β) alloys are quenched at 40~100℃ below the (α+β)─→β part transformation level, and metastable β alloys are quenched at (α+β)─→β section transformation level 40~80℃. Titanium has excessive chemical exercise, and produces robust chemical reactions with O2, N2, H2, CO, CO2, water vapor, ammonia, and so forth. in the atmosphere. The depth of the exhausting and brittle floor layer produced by absorbing fuel can reach zero.1~0.15 mm, and the diploma of hardening is 20%~30%. In the next, we calculate the binding energies of each configurations in α-Ti. We define the binding energy between a Mo substitutional atom and a emptiness in α-Ti as the entire power when the defects are infinitely far apart minus the whole energy after they occupy neighbouring sites. When the emptiness is interested in the Mo-atom, the binding energy is positive. For calculations of defects, the relaxations have been deemed full when the maximum drive on any atom was lower than 10 meV Å−1, and the entire digital power was converged to within 0.005 meV atom−1. For instance, in 2017, Chinese engineers designed a titanium alloy invoice for a captive crane that broke its bill during a struggle and consequently lost the ability to feed with out human help. To find the scale between the lugs of your watch in millimetres, you'll be able to both measure it with a ruler or find this data within the technical data section of your watch's online product web page. Everyday items corresponding to mobile phones, metallic clasps on handbags, laptops, MRI, induction hobs or computerized doorways; subject a watch to magnetic fields and might affect its efficiency for good. To forestall the danger of everlasting deviations of up to a number of minutes a day we've conceived actions with antimagnetic supplies, such as the silicon balance spring, capable of withstanding the highest fields. The micromorphology of the product was characterized by field emission scanning electron microscopy (SEM-EDS, Hitachi, su8010, Japan). The specific floor space of the product was obtained utilizing a particular floor area analyzer (ASAP2020 m, U.S.A.). This is your information to understanding the differences between Alpha-Beta Titanium and Commercially Pure Titanium, as well as studying how the utilization of both variations of titanium might help enhance your backside line. It is primarily used within the medical implant trade and is commonly referred to as Grade 23. The differences are the boundaries of various components allowed and the strength ranges . PRODEC® 17-4 is an enhanced machining version of 17-4 stainless PH. Trials have shown PRODEC 17-4 to offer as a lot as 30% faster machining speeds with out sacrificing device life when compared to standard... 347 Stainless Steel is a columbium stabilized austenitic stainless helpful as much as 1600°F. Alternatively, the benefits of CP Ti over its alloys produced by warmth therapy are vital however make fairly a short listing. Pure titanium grade is softer, has low metal density, is extra ductile and is comparatively formable compared to its alloys. Also, titanium plates, bars and rods — that are grades one, two and three respectively — have relatively larger corrosion resistance. Rolled Alloys, a supplier of titanium and titanium alloy materials, provides the knowledge beneath so as to facilitate a fundamental understanding of the totally different grades of titanium and titanium alloys, and the relative properties of these grades. "This alloy continues to be more expensive than steel but with its strength-to-cost ratio, it turns into far more reasonably priced with higher potential for lightweight automotive purposes," added Vineet Joshi a metallurgist at PNNL. This article provides an end-of-life evaluation of lithium-ion batteries, focusing on the recycling of an ever-growing quantity of spent Li-Ion batteries so as to work towards a sustainable and round method to battery use and reuse. Superior Sensor's ND Middle Pressure Series make the most of Superior Sensor's superior Nimblesense know-how, making them extraordinarily accurate, reliable, and precise. AZoM speaks with Dr. Rajashekar Badam from JAIST about his recently formulated method for anode fabrication that would pave the way in which to the very fast charging of lithium-ion batteries. If by any likelihood you see an inappropriate image within your search results please use this form to tell us, and we'll deal with it shortly. A approach in which the heated metallic sheet is stretched over the mould and then cooled into form. China is witnessing a significant improve within the orders for domestically manufactured commercial plane, with main companies being Chinese airways and different leasing companies. Which comprise neutral alloying parts and/ or alpha stabilisers solely. Titanium alpha alloys are alloys that typically include aluminum and tin, though they will also comprise molybdenum, zirconium, nitrogen, vanadium, columbium, tantalum, and silicon. Alpha alloys do not typically reply to warmth treatment, however they are weldable and are commonly used for cryogenic functions, airplane elements, and chemical processing gear. When most individuals think of titanium alloys, merchandise like biomedical implants, golf clubs, and aircraft come to mind.

  • Specific advantages for Ti supplies present process the PEO course of includes a discount to the coefficient of friction from ∼0.eight to ∼0.4 towards steel, which might lessen the damage from galling.
  • In chemical processing, you will often discover equipment that has extremely unstable chemicals passing via, and being stored inside it.
  • Titanium has high energy of 430 MPa and low density of four.5 g/cm3, compared to iron with strength of 200 MPa and density of 7.9 g/cm3.
  • Results indicated that pretreatment of the implant with phosphoric acid triggered no citotoxicity to the osteoblasts .
If the rumors are true, it will be a welcome surprise for Marvel fans to see Stewart and Snipes reignite the superheroes that molded the superhero style into the well-oiled machine it is at present. For Cruise, however, it would be his first jaunt into the comedian style of film. While the rumors are nonetheless simply that, followers are eagerly imagining Cruise as the Superior Iron Man, and the impressive fan art has us hoping greater than ever that the Jerry Maguire star has discovered a home inside the MCU. Philips has launched a real wi-fi bone conduction sports activities headset A8606, philips A8606 There is a button on both the left and right headphones , Either method, you can control music and calls , It's filled with details . He additionally mentions that for this 12 months, Apple will use 6GB RAM for all iPhone 14 fashions, with the 'Pro' versions getting the latest LPDDR5 memory, while the iPhone 14 and iPhone 14 Max getting LPDDR4X. According to a previous rumor, the iPhone 14 Pro and iPhone 14 Pro Max will feature 8GB RAM, nevertheless it was not confirmed if Apple would use the latest LPDDR5 commonplace. Then again, utilizing the A16 Bionic solely for the premium variations might be one of many greatest hardware differentiators. Allegheny Technologies idled its Rowley, Utah titanium sponge facility in 2016 as a end result of it could purchase imported material for lower than its domestic price of production. And Timet, who operated the final home titanium sponge plant in Henderson, Nevada, went through a mass layoff in 2020.

Ti 6al

To produce titanium alloys and excessive purity titanium ingots, titanium sponge could be melted with varied alloying components using an electron beam, plasma arc or vacuum-arc melting. Heat exchangers to eliminate corrosion problems caused by cooling waters containing chloride and sulfide, and a number of other advantages can accrue from using titanium on the method aspect of heat exchangers as well. Because the metallic is resistant to erosion corrosion, titanium vessels can be subjected to course of liquids flowing at high rates, thereby eliminating the danger of biofouling. In addition, titanium is the one metal identified to be completely proof against all forms of biofouling corrosion. Guest contributors are welcome at the Alloy Wiki.It is a weekly wiki and guide on alloy info and processing technology, whereas additionally in regards to the huge array of opportunities that are present in manufacturing. Our group of writers consists of a Material Supplier / Machinist / Tool and Die Maker, a Biomedical Engineer / Product Development Engineer, a Job Development Coordinator / Adjunct Professor, and a President and CEO of a producing facility. Using diamond and cubic boron nitride as tools for cutting titanium alloys can obtain vital results. For instance, the cutting velocity can reach 200 m/min beneath the condition of emulsion cooling with pure diamond tools; if the chopping fluid isn't used, the allowable slicing pace is just a hundred m/min at the identical quantity of wear. The room temperature strength can reach 1372 ~ 1666 MPa; however the thermal stability is poor and it's not appropriate to be used at high temperatures. The biggest problem with PN methods is high temperatures during processing (usually above 540º Celsius). They resist corrosion even within the presence of oxidizing acids, saltwater, chlorides, and natural and industrial chemical compounds. And since titanium devices are non-magnetic, they can be safely used throughout the MRI machine. Ti–13 V–11Cr–3Al was the primary beta titanium alloy for use in business quantities. It was used within the airframe of SR-71 Blackbird navy plane, which was designed to fly at Mach 2.5. The good news for titanium is that right now's manufacturing analysis is rendering ways to produce titanium wire extra cost-effectively.

ASTM Titanium Gr2 and GR12 Wire from 0.2mm to 6mm for Welding/Glasses/Military/Medical Industries, Titanium Seamless Pipes Titanium Alloy Welding Pipes Titanium Alloy Welded Tubes - Buy China Titanium Wire on Globalsources.com - Global Sources

ASTM Titanium Gr2 and GR12 Wire from 0.2mm to 6mm for Welding/Glasses/Military/Medical Industries, Titanium Seamless Pipes Titanium Alloy Welding Pipes Titanium Alloy Welded Tubes - Buy China Titanium Wire on Globalsources.com.

Posted: Mon, 14 Mar 2022 03:40:36 GMT [source]

With the increase of titanium in recent years, more titanium and its alloy are applied to the civil utility. Titanium alloys treated at decrease temperatures of 650 and 750°C skilled high put on charges and third physique abrasive wear because of the compound layer failure during early phases of wear testing. For airframe purposes, direct contact between cadmium and titanium ought to be avoided. At one time cadmium plating was typically used on titanium alloy fasteners to enhance lubricity and to scale back the likelihood of dissimilar metal corrosion when used with aluminum alloys. This follow is no longer permitted and cadmium plated metal components and fasteners should not be in direct contact with titanium alloy components. Heat treatment of titanium fabrications just isn't usually needed. DisclaimerAll content on this web site, including dictionary, thesaurus, literature, geography, and different reference knowledge is for informational functions solely. This data shouldn't be thought-about complete, updated, and isn't meant to be used in place of a visit, session, or advice of a authorized, medical, or another professional. It is determined that the extremely fantastic grain construction of the annealed SP-700 provides good power in the alloy with out reduction in toughness. "As the first staff to use 3D printing to develop new alloys with distinctive microstructures and properties, we'll further apply this design concept to totally different alloy methods to further discover different properties of the brand new alloys," he added. One problem with the β part, which has a body-centered cubic crystal construction, is that like ferritic iron, it has a ductile-brittle transition temperature. In 1964, the RR Adour engine for Hawk airplane used IMI 685 for combined creep resistance, good weldability, and excessive fracture toughness. The different consideration in the huge picture view of titanium is the worth of return in real-world functions. "This began from my core analysis," mentioned Morosan, professor of physics and astronomy, of chemistry and of supplies science and nanoengineering at Rice. This chapter consists of the most recent developments carried out within the field of floor treatments on titanium with very promising results. As you presumably can see Alpha-Beta titanium alloys, particularly Grade 9 is an efficient way to offer the utmost quality to shoppers whereas trimming prices as a lot as attainable in comparability with commercially pure titanium. The preceding classification of titanium alloys according to metallographic buildings has been included as a outcome of a knowledge of the terminology is beneficial. A classification system more related to the designer, nonetheless, is one based on tensile.

Title: A Low

In such application, elements made from Ti-alloys are sometimes in tribological contact with different materials and media, under stationary or dynamic loading and at various temperatures. These contact masses may cause harm of the thin native oxide film which passivates the titanium floor; and the metal can undergo intensive interactions with the counterface material and/or the encompassing surroundings. These interactions can generate numerous adverse effects on titanium elements, such as high friction and even seizure in addition to corrosion embrittlement, which lead to the untimely failure of the implanted methods. Their decrease Young´s modulus, superior biocompatibility and higher corrosion resistance as compared with conventional stainless steels and cobalt-based alloys, make them a super choice for bio-applications . Because of the mentioned fascinating properties, titanium and titanium alloys are extensively used as onerous tissue replacements in artificial bones, joints and dental implants. While pure titanium metallic is lauded for its low density, extreme corrosion, warmth resistance and energy, it is rather onerous and therefore tough to process. A plasma discharge is formed on the surface of the substrate, remodeling it into a thin, protecting layer of titanium oxide, with out subjecting the substrate itself to damaging thermal exposure. However, when selecting titanium alloys you want to learn about a much less well-known Alpha-Beta part titanium alloy generally identified as Grade 9 or Ti-3-2.5 that could presumably be a superior steel right alongside Grade 5. Grade 9 is comprised of titanium, 3% aluminum, and a couple of.5% vanadium. It is way stronger than commercially pure titanium and simpler to work with than Grade 5 due primarily to the reality that it can be labored cold. Other properties that lead to it being an easier alloy to work with is that Grade 9 supplies good ductility, moderate energy, and superb resistance to corrosion. Both Alpha-Beta alloys are top-of-the-line, but when Grade 9 can accommodate your wants, it is much more cost-effective than Grade 5.
EDC Short GC - All Terrain Brown The EDC Short in Guide Cloth is our uncompromising, high standard in a performance, 4-way stretch technical, plain front, daily put on, trail to avenue brief. #edcshort The EDC quick is our on a regular basis quick designed with today's lively EDC consumer in mind.... EDC Short GC - Universal Field Gray The EDC Short in Guide Cloth is our uncompromising, excessive normal in a efficiency, 4-way stretch technical, plain entrance, every day put on, trail to road quick. Invictus-C Titanium The Invictus-C is the compact variant of our Invictus folder design that includes a premium Böhler M390 alloy blade, full billet titanium handles, a framelock with a lock bar stabilizer, and a pivot with ceramic bearings. Precision made, with nice jimping throughout, dive watch grade glow-in-the-dark thumbstud cabochons, and the... Recent analysis at several Chinese universities has developed a novel electrocatalyst that efficiently converts CO2 to liquid fuels containing a quantity of carbon atoms.

Titanium Flanges

"Impurities" found in pure metals, generally adding advantages to the alloy. Omega then leveraged that technology to develop a radical diver range for customers with water-resistance down to six,000 meters. The titanium Ultra Deep (US$12,300) is fitted with a brushed ceramic bezel with a diving scale and a streamlined asymmetrical case shape evoking the originals. A striped NATO strap in cyan and black is produced from polyamide yarn, sourced from one hundred pc recycled fishing nets. All three watches shrugged off the intense pressures of the 12-hour dive with aplomb. MacRumors attracts a broad audience of both shoppers and professionals interested in the latest applied sciences and products.

3D Printing Honeycomb Structures - AZoM

3D Printing Honeycomb Structures.

Posted: Thu, 03 Mar 2022 08:00:00 GMT [source]

Duramin 150 An entry-level Rockwell computerized hardness tester for top accuracy and a brief cycle time. Automatic Cleaning tools Our computerized cleansing functions deliver fast and effective cleaning solutions and are more environmentally friendly than manual cleaning. DiaDuo-2 All-in-one diamond options which combine suspension and lubricant, give you glorious value by providing flexibility and maximizing your effectivity and reproducibility. DiaPro Achieve the most effective preparation quality and maximize your reproducibility with our distinctive DiaPro All-in-One diamond options, which mix suspension and lubricant. Some basic research on alloy design of the model new titanium alloy and process design corresponding to forging and floor remedy had been carried out to have the ability to develop new titanium alloy connecting rods. Free machining Ti-3Al-2V alloy is the most effective alloy for connecting rods because it has mechanical properties equivalent to quenched and tempered medium carbon steels, a well-liked material for connecting rods. The alloy could be machined at higher pace than the most well-liked titanium alloy Ti-6Al-4V. Forging in the β part temperature range is fascinating to enable one warmth forging of connecting rods and to eliminate crack initiation.

Good Low Temperature Performance

If the enthalpy of formation of the emptiness in α-Ti decreases in a similar way, then the corrected experimental enthalpy of formation might be considerably closer to the DFT outcomes presented in table three. Where μTi and μMo are the chemical potentials of Ti and Mo, respectively. We equate μMo to the entire energy per atom of Mo in its equilibrium bcc crystal construction. We equate μTi to the entire energy per atom of a supercell of pure α- or β-Ti with the identical supercell vectors as the supercell containing the defect, and using the identical k-point sampling. As a further check of the convergence with respect to supercell size, we calculated the formation vitality of the octahedral self-interstitial in α-Ti and compared our outcomes with these of Vérité et al. . It is seen in table 2 that our results differ from these of Vérité et al. by less than 3%. Sometimes Apple will stagger launch dates for specific models, particularly when introducing a brand new design or measurement. So it's attainable that the iPhone 14 lineup could have more than one release date. Ll of this will increase production prices and, inevitably, these prices are passed on to the patron. Sitting on the racier finish of the spectrum, the Vamoots Disc RSL has stiff, outsized tubing and aggressive angles and match, however nonetheless maintains that traditional, easy titanium experience quality the fabric is so prized for. However, latest developments in excessive voltage anodizing enable the production of crystalline rutile/anatase films at near to ambient temperature . By anodic oxidation, elements corresponding to Ca and P may be imported into the floor oxide on titanium and the micro-topography could be diversified by way of regulating electrolyte and electrochemical conditions. The presence of Ca-ions has been reported to be advantageous to cell growth, and in vivo knowledge show implant surfaces containing each Ca and P improve bone apposition on the implant floor. One possible various to solve tribological problems and which goes to explain more element consists of protecting the alloy surface by means of biocompatible Diamond-Like Carbon coatings. "Diamond-Like Carbon" is a generic term referring to amorphous carbon films, deposited by both Physical Vapor Deposition or Plasma-Enhanced Chemical Vapor Deposition .

Product View From Completely Different Angles

Cold Mounting How to cold mount effectively to ensure a quick course of and accurate outcomes. Weld Inspection All you have to find out about analyzing materialographic sections of welded joints. Electrolytic Preparation Electrolytic polishing gear for all of your needs, from testing in thr lab to non-destructive cell solutions for use within the subject and electrolytes for just about any software. Replication System A versatile 3D replicating system that enables you to transfer the structure of a strong surface to a extremely accurate and steady reproduction. Duramin 650 A versatile Vickers, Knoop, Brinell and Rockwell semi/fully computerized hardness tester for laboratory environments. Duramin one hundred sixty A high-end Rockwell automatic hardness tester with high-precision load cell expertise for terribly accurate outcomes. Either selection makes one of the best use of titanium's advantages in a wide range of purposes. Found in a wide selection of products, from hi-tech planes to golf golf equipment, the lightweight metallic Titanium is a hard-working materials that can be strengthened with performance-enhancing surface treatments. 6Al-4V usually has excellent resistance to corrosion, though, the alloy is usually susceptible to hot salt stress corrosion cracking. The thermal conductivity of commercially pure titanium – Grade 2 is sixteen W/(m.K). Rockwell hardness of commercially pure titanium – Grade 2 is roughly 80 HRB. The thermal conductivity of Ti-6Al-4V – Grade 5 titanium alloy is 6.7 W/(m.K). Rockwell hardness of Ti-6Al-4V – Grade 5 titanium alloy is approximately forty one HRC. The Young's modulus of elasticity is the elastic modulus for tensile and compressive stress in the linear elasticity regime of a uniaxial deformation and is often assessed by tensile tests. Up to a limiting stress, a body will be able to get well its dimensions on removing of the load. The applied stresses trigger the atoms in a crystal to move from their equilibrium position. All the atoms are displaced the same quantity and nonetheless keep their relative geometry. Oscar has near a decade of biking industry expertise, initially working in a big selection of roles at Evans Cycles before joining Carbon Bike Repair. He is particularly fond of workshop software exotica and is a proponent of Campagnolo groupsets. Oscar prefers lightweight highway and gravel frames with easy tube shapes, somewhat than the most recent development for aerodynamics and full integration. He is obsessive about maintaining updated with all the latest tech, is fixated with the smallest particulars and is thought for his distinctive opinions. However, where a titanium bike makes up for its initial value is in longevity. It's an extremely resilient materials, meaning titanium bikes can take plenty of knocks and punishment without hassle. Due to its unprecedented power, lightness, stable market and non-corrosive characteristics, titanium has emerged as the metallic of selection for aerospace, industry and medical, leisure and client products, notably golf clubs and bicycle frames. Furthermore, due to its power and lightness, titanium is presently being tested in the car industry which has discovered that the use of titanium for connecting rods and shifting parts has resulted in vital fuel effectivity. Titanium is a lightweight metallic (4.5 g/cm3), robust and extremely immune to corrosion. Titanium is very resistant to heat with a melting temperature as excessive as 1668°C; its melting level is higher than that of metal. Although heat conductivity of titanium is type of the same as that of stainless-steel, its weight is almost half of stainless-steel. Titanium is also non-toxic and non-allergenic, typically utilized in piercing jewelry. Titanium alloys are mild, corrosion-resistant, biochemically inert and able to face up to excessive temperatures. These properties make them significantly acceptable for products within the aircraft, spacecraft and medical sectors. They obtain the right balance between solidity, corrosion-resistance and workability. Grade 5 titanium offers a shiny gray color that's near that of stainless-steel, and suits both "brushed" and "polished" ending. Titanium is important for alloying with aluminum, molybdenum, iron, manganese, and other metals. Titanium alloys are utilized in situations where light-weight energy and ability to resist temperature extremes are required (e.g., aerospace applications). The transition temperature tends to be above room temperature, with cleavage fracture dominating at ambient temperatures. The presence of a small amount of the more ductile β-phase in nearly α alloys is advantageous for heat treatment and the flexibility to forge. Vickers Hardness testing How to make use of the Vickers hardness test for a variety of functions, together with micro hardness testing. Rockwell Hardness testing How to use the Rockwell hardness take a look at for fast hardness testing in the lab or manufacturing setting. 3 methods to improve your course of when cutting giant pieces What are the 3 most expensive mistakes when sectioning large workpieces – and how will you avoid them? Our consultants present you tips on how to save time with more environment friendly clamping, scale back cut-off wheel prices and enhance high quality with automated slicing.

0 개의 댓글:

댓글 쓰기

Share

Twitter Delicious Facebook Digg Stumbleupon Favorites