Structure of hexagonal WB2Structure of orthorhombic β-WB
Tungsten borides are compounds of tungsten and boron. Their most remarkable property is high hardness. The Vickers hardness of WB or WB2 crystals is ~20 GPa[1][2] and that of WB4 is ~30 GPa for loads exceeding 3 N.[3]
^Cite error: The named reference otani was invoked but never defined (see the help page).
^Okada, S.; Kudou, K.; Lundström, T. (1995). "Preparations and Some Properties of W2B, δ-WB and WB2 Crystals from High-Temperature Metal Solutions". Japanese Journal of Applied Physics. 34 (1): 226–231. Bibcode:1995JaJAP..34..226O. doi:10.1143/JJAP.34.226. S2CID 95651766.
^Cite error: The named reference wb4 was invoked but never defined (see the help page).
Tungstenborides are compounds of tungsten and boron. Their most remarkable property is high hardness. The Vickers hardness of WB or WB2 crystals is ~20...
highest boride of tungsten in 1966, it was only recognized as an inexpensive superhard material in 2011. Interestingly, lower borides of tungsten such as...
Tungsten carbide (chemical formula: WC) is a chemical compound (specifically, a carbide) containing equal parts of tungsten and carbon atoms. In its most...
addition to the listed oxides and borides, other materials can be used as well. Some examples are carbides and borides of transition metals, e.g. zirconium...
chemical stability, TiB2 is more stable in contact with pure iron than tungsten carbide or silicon nitride. TiB2 is resistant to oxidation in air at temperatures...
borides. The "higher" borides (LnBx where x > 12) are insulators/semiconductors whereas the lower borides are typically conducting. The lower borides...
Lundström (1985). "Structure, defects and properties of some refractory borides" (PDF). Pure and Applied Chemistry. 57 (10): 1383–1390. doi:10.1351/pac198557101383...
carbon atoms. In this respect boron carbide is similar to the boron rich borides. Both silicon carbide (also known as carborundum) and boron carbide are...
Collider. Certain other metal borides find specialized applications as hard materials for cutting tools. Often the boron in borides has fractional oxidation...
structurally closer to borides than to carbides. Because of size differences however silicides are not isostructural with borides and carbides. Bonds in...
even tungsten wire substrate which produces diameters of 4.0 mil (102 micron) and 5.6 mil (142 micron). It consists of a fully boridedtungsten core with...
source. Control rods can also be constructed as thick turnable rods with a tungsten reflector and absorber side turned to stop by a spring in less than one...
the high-pressure AWJ, and it was Boride Products (now Kennametal) development of their ROCTEC line of ceramic tungsten carbide composite tubes that significantly...
working on "nonstoichiometry in vanadium and tungsten bronzes, two-dimensional oxyhalogenides, borides, and silicides, magnetic spinels". In 1961 he...
lanthanum boride, due to its higher resistance to carbon contamination. Boride cathodes are about ten times as "bright" than the tungsten ones and have...
3, MSi 2, MSi 3, and MSi 6. They are structurally more similar to the borides than the carbides, in keeping with the diagonal relationship between boron...
an insoluble salt, K2[ThF6] (potassium hexafluorothorate(IV)). Thorium borides, carbides, silicides, and nitrides are refractory materials, like those...
lattice (space group I41/amd), it is isomorphic with PuSi2 and ThSi2. Borides of americium include AmB4 and AmB6. The tetraboride can be obtained by...
components which may experience high temperature. Cermets are used instead of tungsten carbide in saws and other brazed tools due to their superior wear and corrosion...
"Advancements in the search for superhard ultra-incompressible metal borides" (PDF). Advanced Functional Materials. 19 (22): 3526–3527. doi:10.1002/adfm...
deformation. High performance tungsten carbide cutting tools are made from a tough cobalt matrix cementing the hard tungsten carbide particles; lower performance...
Lkhamsuren (2011). "Synthesis of Binary Transition Metal Nitrides, Carbides and Borides from the Elements in the Laser-Heated Diamond Anvil Cell and Their Structure-Property...
proportion. The powder can be converted into larger crystals of samarium borides using arc melting or zone melting techniques, relying on the different...
selenium sulfide, an ingredient in some shampoos. Since 1990, a number of borides with chalcogens bonded to them have been detected. The chalcogens in these...
most of the volume is often from the group of oxides, such as nitrides, borides, silicides, whereas the second component is often a metal. Ideally both...
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