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Titanium carbide

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Verifiedfields = changed
verifiedrevid = 441066916
ImageFile = TiC-xtal-3D-vdW.png
ImageSize =
IUPACName = titanium carbide
OtherNames = titanium(IV) carbide
Section1={{Chembox Identifiers
CASNo_Ref =
CASNo = 12070-08-5
UNII_Ref =
PubChem = 4226345
StdInChI = 1S/C.Ti/q-1;+1
Titanium carbide, TiC, is an extremely hard (Mohs 9–9.5) refractory ceramic material, similar to tungsten carbide. It has the appearance of black powder with the sodium chloride (face-centered cubic) crystal structure.
It occurs in nature as a form of the very rare mineral khamrabaevite ( ) - (Ti,V,Fe)C. It was discovered in 1984 on Mount Arashan in the Chatkal District, USSR (modern Kyrgyzstan), near the Uzbek border. The mineral was named after Ibragim Khamrabaevich Khamrabaev, director of Geology and Geophysics of Tashkent, Uzbekistan. As found in nature its crystals range in size from 0.1 to 0.3mm.

Physical properties

Titanium carbide has an elastic modulus of approximately 400 GPa and a shear modulus of 188 GPa.

Manufacturing and machining

Tool bits without tungsten content can be made of titanium carbide in nickel-cobalt matrix cermet, enhancing the cutting speed, precision, and smoothness of the workpiece.
The resistance to wear, corrosion, and oxidation of a tungsten carbide–cobalt material can be increased by adding 6–30% of titanium carbide to tungsten carbide. This forms a solid solution that is more brittle and susceptible to breakage.
Titanium carbide can be etched with reactive-ion etching.


Titanium carbide is used in preparation of cermets, which are frequently used to machine steel materials at high cutting speed. It is also used as an abrasion-resistant surface coating on metal parts, such as tool bits and watch mechanisms. Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft.
7075 aluminium alloy (AA7075) is almost as strong as steel, but weighs one third as much. Using thin AA7075 rods with TiC nanoparticles allows larger alloys pieces to be welded without phase-segregation induced cracks.

See also

  • Metallocarbohedryne, a family of metal-carbon clusters including

  • Category:Carbides
    Category:Ceramic materials
    Category:Refractory materials
    Category:Superhard materials
    Category:Titanium compounds

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