Titanium carbide

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This article is about bulk material. For titanium-carbon clusters, see metallocarbohedryne.
Titanium carbide
12070-08-5 YesY
Molar mass 59.89 g/mol
Appearance black powder
Density 4.93 g/cm3
Melting point 3,160 °C (5,720 °F; 3,430 K)
Boiling point 4,820 °C (8,710 °F; 5,090 K)
insoluble in water
Cubic, cF8
Fm3m, No. 225
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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.

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.[citation needed] Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft.[citation needed]

Physical Properties[edit]

Titanium carbide has an elastic modulus of approximately 400 GPa and a shear modulus of 188 GPa.[1]

Manufacturing and machining[edit]

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.[citation needed]

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.[clarification needed]

Titanium carbide can be etched with reactive-ion etching.

See also[edit]


  1. ^ Chang, R; Graham, L (1966). "Low‐Temperature Elastic Properties of ZrC and TiC". Applied Physics 37: 3778. doi:10.1063/1.1707923.