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Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form, tungsten carbide is a fine gray powder, but it can be pressed and formed into shapes through sintering [7] for use in industrial machinery,engineering facility,mold industry,cutting tools, chisels, abrasives, armor-piercing ...
The jewelry industry makes rings of sintered tungsten carbide, tungsten carbide/metal composites, and also metallic tungsten. [76] WC/metal composite rings use nickel as the metal matrix in place of cobalt because it takes a higher luster when polished. Sometimes manufacturers or retailers refer to tungsten carbide as a metal, but it is a ...
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Tungsten borides are compounds of tungsten and boron. Their most remarkable property is high hardness. Their most remarkable property is high hardness. The Vickers hardness of WB or WB 2 crystals is ~20 GPa [ 1 ] [ 2 ] and that of WB 4 is ~30 GPa for loads exceeding 3 N. [ 3 ]
The discovery of superhard tungsten tetraboride is further evidence for the promising design approach of covalently bonding incompressible transition metals with boron. While WB 4 was first synthesized and identified as the highest boride of tungsten in 1966, [ 52 ] it was only recognized as an inexpensive superhard material in 2011.
Tungsten, for example, still made the list in both metallic and carbide forms. Diamond, graphite, boron nitride joined that list, as did transition metals like molybdenum, tantalum, and rhenium.
Tungsten carbide is used to cut and form other metals and is made from tungsten carbide particles bonded with cobalt. [2] Tungsten carbide is the largest and most important use of tungsten, [3] consuming about 50% of the world supply. [4] Other products include sintered filters, porous oil-impregnated bearings, electrical contacts and diamond ...
The tantalum–tungsten alloys typically vary in their percentage of tungsten. Some common variants are: (Ta – 2.5% W) → also called 'tantaloy 63 metal.' The percentage of tungsten is about 2 to 3% and includes 0.5% of niobium. This alloy has a good resistance to corrosion and performs well at high temperatures.