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Titanium carbide

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.

Titanium carbide
Names
IUPAC name
titanium carbide
Other names
titanium(IV) carbide
Identifiers
  • 12070-08-5 Y
3D model (JSmol)
  • Interactive image
ECHA InfoCard 100.031.916
  • 4226345
UNII
  • 7SHTGW5HBI Y
  • DTXSID10583531
  • InChI=1S/C.Ti/q-1;+1
  • [Ti+]#[C-]
Properties
TiC
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
+8.0·10−6 cm3/mol
Structure
Cubic, cF8
Fm3m, No. 225
Octahedral
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)

It occurs in nature as a form of the very rare mineral khamrabaevite (Russian: Хамрабаевит) - (Ti,V,Fe)C. It was discovered in 1984 on Mount Arashan in the Chatkal District,[1] USSR (modern Kyrgyzstan), near the Uzbek border. The mineral was named after Ibragim Khamrabaevich Khamrabaev, director of Geology and Geophysics of Tashkent, Uzbekistan. Its crystals as found in nature range in size from 0.1 to 0.3 mm.

Physical properties edit

Titanium carbide has an elastic modulus of approximately 400 GPa and a shear modulus of 188 GPa.[2]

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 carbidecobalt 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.

Applications edit

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.[3] Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft.[4]

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.[5]

See also edit

  • Metallocarbohedryne, a family of metal-carbon clusters including Ti8C12

References edit

  1. ^ Dunn, Pete J (1985). "New mineral names". American Mineralogist. 70: 1329–1335.
  2. ^ Chang, R; Graham, L (1966). "Low-Temperature Elastic Properties of ZrC and TiC". Journal of Applied Physics. 37 (10): 3778–3783. Bibcode:1966JAP....37.3778C. doi:10.1063/1.1707923.
  3. ^ Gupta, P.; Fang, F.; Rubanov, S.; Loho, T.; Koo, A.; Swift, N.; Fiedler, H.; Leveneur, J.; Murmu, P.P.; Markwitz, A.; Kennedy, J. (2019). "Decorative black coatings on titanium surfaces based on hard bi-layered carbon coatings synthesized by carbon implantation". Surface and Coatings Technology. 358: 386–393. doi:10.1016/j.surfcoat.2018.11.060. S2CID 139179067.
  4. ^ Sforza, Pasquale M. (13 November 2015). Manned Spacecraft Design Principles. Elsevier. p. 406. ISBN 9780124199767. Retrieved 4 January 2017.
  5. ^ "New welding process opens up uses for formerly un-weldable lightweight alloy". newatlas.com. 13 February 2019. Retrieved 2019-02-18.

titanium, carbide, redirects, here, taiwanese, broadcaster, which, uses, branding, chung, television, extremely, hard, mohs, refractory, ceramic, material, similar, tungsten, carbide, appearance, black, powder, with, sodium, chloride, face, centered, cubic, cr. CTi redirects here For Taiwanese broadcaster which uses the CTi branding see Chung T ien Television 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 Titanium carbide Names IUPAC name titanium carbide Other names titanium IV carbide Identifiers CAS Number 12070 08 5 Y 3D model JSmol Interactive image ECHA InfoCard 100 031 916 PubChem CID 4226345 UNII 7SHTGW5HBI Y CompTox Dashboard EPA DTXSID10583531 InChI InChI 1S C Ti q 1 1 SMILES Ti C Properties Chemical formula TiC 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 Solubility in water insoluble in water Magnetic susceptibility x 8 0 10 6 cm3 mol Structure Crystal structure Cubic cF8 Space group Fm3m No 225 Coordination geometry Octahedral Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa N verify what is Y N Infobox references It occurs in nature as a form of the very rare mineral khamrabaevite Russian Hamrabaevit Ti V Fe C It was discovered in 1984 on Mount Arashan in the Chatkal District 1 USSR modern Kyrgyzstan near the Uzbek border The mineral was named after Ibragim Khamrabaevich Khamrabaev director of Geology and Geophysics of Tashkent Uzbekistan Its crystals as found in nature range in size from 0 1 to 0 3 mm Contents 1 Physical properties 2 Manufacturing and machining 3 Applications 4 See also 5 ReferencesPhysical properties editTitanium carbide has an elastic modulus of approximately 400 GPa and a shear modulus of 188 GPa 2 Manufacturing and machining editTool 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 Applications editTitanium 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 3 Titanium carbide is also used as a heat shield coating for atmospheric reentry of spacecraft 4 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 5 See also editMetallocarbohedryne a family of metal carbon clusters including Ti8C12References edit Dunn Pete J 1985 New mineral names American Mineralogist 70 1329 1335 Chang R Graham L 1966 Low Temperature Elastic Properties of ZrC and TiC Journal of Applied Physics 37 10 3778 3783 Bibcode 1966JAP 37 3778C doi 10 1063 1 1707923 Gupta P Fang F Rubanov S Loho T Koo A Swift N Fiedler H Leveneur J Murmu P P Markwitz A Kennedy J 2019 Decorative black coatings on titanium surfaces based on hard bi layered carbon coatings synthesized by carbon implantation Surface and Coatings Technology 358 386 393 doi 10 1016 j surfcoat 2018 11 060 S2CID 139179067 Sforza Pasquale M 13 November 2015 Manned Spacecraft Design Principles Elsevier p 406 ISBN 9780124199767 Retrieved 4 January 2017 New welding process opens up uses for formerly un weldable lightweight alloy newatlas com 13 February 2019 Retrieved 2019 02 18 Retrieved from https en wikipedia org w index php title Titanium carbide amp oldid 1208038309, wikipedia, wiki, book, books, library,

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