The carbides of the group 4, 5 and 6 transition metals (with the exception of chromium) are often described as interstitial compounds. These carbides have metallic properties and are refractory.Some exhibit a range of stoichiometries, being a non-stoichiometric mixture of various carbides arising due to crystal defects.Some of them e.g. titanium carbide, TiC and tungsten carbide are important
Tungsten carbide vs. chromium carbide coating in ball v
Jan 08, 2011· Tungsten carbide vs. chromium carbide coating in ball v Valves ( Plug or Ball ) used in alyst section of H-Oil unit alyst lines sufffers from passing due to wear of seat ring and ball. Stelliting has not proved to be a solution.
Advanced Engineering: Syalon 050 vs Tungsten Carbide Blast
Nov 19, 2018· Syalon 050 vs Tungsten Carbide. Tungsten carbide is incredibly tough, displaying hardness ratings of up to 36000 MPa and a maximum fracture toughness of 3.8 MPa. This is due to its microstructural arrangement of high strength carbide grains.
Cobalt Binder Tungsten Carbide / BlackLAST® C Series
Tungsten Carbide with Cobalt Binder (WC-Co) BlackLAST® is a tungsten carbide with a cobalt binder matrix. It offers high hardness and considerable toughness, and high flexibility of the materials in terms of property coinations. BlackLAST provide superior performance in sealing, abrasion, and …
Silicon Carbide Coating (SiC) This coating can be deposited through numerous methods: RPI utilizes the DCD process. The high micro-hardness of silicon carbide (SiC) coating provides a wear-resistant layer to tooling. In our process, silicon carbide is generally used in conjunction with a …
Mechanical Properties of Silicon Carbide (SiC) Thin Films
Hardness is an important property for thin films used in electronic, optical, and mechanical appliions. Harder coatings also have higher wear resistance, also harder surfaces tend to have lower friction and lubriion has better results with harder surfaces . Silicon carbide is covalently bonded, which is the reason for its high hardness.
Silicon Carbide is among the hardest of ceramics, and retains hardness and strength at elevated temperatures, which translates into among the best wear resistance also. Additionally, SiC has a high thermal conductivity, especially in the CVD (chemical vapor deposition) grade, which aids in thermal shock resistance. It is also half the weight of steel.
customized for hardness and toughness by the type of carbide and binders used, and by modifying the mix of ceramics and metal. Tungsten-carbide and chromium-carbide can be added to the self-ﬂ uxing metal coatings to create a material that is heat-treatable for metallurgical bonding. Wear mechanisms Hardness is not the sole criterion for
Tungsten carbide | chemical compound | Britannica
Tungsten carbide is a dense, metallike substance, light gray with a bluish tinge, that decomposes, rather than melts, at 2,600° C (4,700° F). It is prepared by heating powdered tungsten with carbon black in the presence of hydrogen at 1,400°–1,600° C (2,550°–2,900° F). For fabriion, a process developed in the 1920s is employed: the powdered tungsten carbide is mixed with another
Grades - General Carbide
Tungsten carbide (WC), also referred to as cemented carbide, is a composite material manufactured by a process called powder metallurgy. Tungsten carbide powder, generally ranging in proportion between 70%-97% of the total weight, is mixed with a binder metal, usually cobalt or nickel, compacted in a die and then sintered in a furnace.
Tungsten Carbide Seal Faces
Overview of Tungsten Carbide Seals. Tungsten Carbide - A very versatile seal face like Silicon Carbide. It is very hard like silicon carbide however it is very heavy to the touch, making it easy to distinguish from silicon carbide. It comes in two primary types: Nickel Bound (Ammonia appliions should be avoided)
Quali-Tex Products - A Quality Texas Company
An Extreme Nickel Carbide seat with a Silicon Nitride ball is a very popular coination for extremely tough well conditions. Extreme Nickel Carbide is a heavy material like Tungsten Carbide with a strong magnetic pull. Hardness: Balls HRA 93.0-94.0, Seats HRA 88.0-89.0. ORDER HERE
Coefficient for Static Friction of Steel Chart - Carbide Depot
Materials and Material Coinations: Coefficient of Friction: Clean: Lubried: Steel: 0.74: 0.16: Copper-lead alloy: 0.22-Phosphor-bronze: 0.35-Aluminum-bronze
Tungsten Carbide Coating - Tungsten Carbide Powder | NAS
Tungsten carbide coating is done through a process known as High-Velocity Oxygen Fuel spraying (HVOF). This tungsten carbide coating process involves the use of coustive thermal spray at high velocity to develop exceptional wear and corrosion resistance. It is by far the most preferred method of coating owing to the many benefits it presents.
Tungsten (IV) carbide Formula
Physical properties: Tungsten carbide is a grey to black lustrous solid and its density is 15.6 g mL-1. Tungsten carbide melting and boiling points are 2830 ºC and 6000 ºC, respectively. It is insoluble in water, but is soluble in nitric acid and hydrofluoric acid. Tugnsten carbide has hardness extremely elevated, 9 on the Mohs scale.
High Precision Balls - Titanium Carbide Coated | Tsubaki
The balls are coated in Safety Harbor, Florida by BryCoat, Inc. using a titanium carbide coating applied in a high temperature CVD process. TiC technology is over 30 years old and has been developed to support many navigation, space and medical bearing appliions.
Corrosionpedia - What is a Carbide? - Definition from
Aug 25, 2017· Calcium carbide is an important source of acetylene and other chemicals, whereas the carbides of silicon, tungsten, and several other elements are valued for their physical hardness, strength, and resistance to chemical attack, even at very high temperatures. Iron carbide (cementite) is an important constituent of steel and cast iron.
3 Primary Uses Of Tungsten | The Appliions of Tungsten
3 Primary Uses Of Tungsten. The melting point of tungsten is the highest among all metallic elements, and its density (19.3 g / cm³) is very high, close to gold. The hardness of tungsten is also very high, and the hardness of tungsten carbide is close to that of the diamond.
Tungsten Titanium Carbide (WTiC) - H.C. Starck
H.C. Starck offers two grades of high quality tungsten titanium carbide powder with various tungsten/titanium ratios: in the standard grade (W,Ti)C S the ratio is 50/50. The (W,Ti)C HV grade with even fewer impurities is available with a 50/50 ratio and a 70/30 ratio.
The Trouble With Silicon Carbide | Pumps & Systems
Dec 17, 2011· Traditionally, pump manufacturers used SiC (silicon carbide) for bushings and bearings in these pumps because of its high hardness and ability to withstand abrasive wear in solid media. Since the early 1980s, OEM pump manufacturers have been using sintered SiC bearings for the stationary and rotating components of tubular casing pumps.
What are carbide tips? | HowSfWorks
Carbide (or more specifically tungsten carbide and titanium carbide) is a very common material on any sort of cutting tool: For example, saw blades, lathe bits, drill bits, router bits and dental drilling tips are generally made of carbide.Carbide is so popular in these sorts of tools because it stays sharper longer than most other materials. Additionally, some ball-point pens use carbide
Renishaw: Styli materials
Tungsten carbide. Tungsten carbide stems are best used for maximising stiffness with either small stem diameters required for ball diameters of 1 mm and below, or lengths up to 50 mm. Beyond this, weight can become a problem and stiffness is lost due to deflection at the stem to body joint. Ceramic
Hardness: 92 Ra. Specific Gravity: 14.9. Thermal Coefficient of Expansion: 2.5 x 10-6 in/in °F. Temperature Range: -250°F to 400°F. Chemical Resistance: Due to cobalt binder, tungsten carbide is attacked by acids with Ph of 2–3 but is resistant to alkalis, such as sodium hydroxide, up to 40%. 6. Carbon Steel—ASTM, A-216, Grade WCB