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Vanadium carbide
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<h2 id="structure-and-preparation">Structure and preparation</h2> <p>Being isomorphous with vanadium monoxide, it crystallizes in the rock salt structure. Because VC and VO are <a href="/facts/Miscible/HwQaolbQ">miscible</a>, samples of VC typically contain an impurity of the oxide.<a class="footnote-ref" id="fnref:3" href="#fn:3"><sup>3</sup></a> It is produced by heating vanadium oxides with carbon at around 1000 °C. Vanadium carbide can be formed in the (111) orientation, when formed by radio frequency magnetron sputtering. Although VC is thermodynamically stable, it converts to V2C at higher temperatures. </p><p>Vanadium carbide is used as an additive to <a href="/facts/Cemented_carbide/bVre9d6g">cemented carbide</a>, to refine the carbide crystals and thereby get an increased hardness of the inserts. </p> <h2 id="physical-properties">Physical properties</h2> <p>Vanadium Carbide has an elastic modulus of approximately 380 GPa.<a class="footnote-ref" id="fnref:4" href="#fn:4"><sup>4</sup></a> </p> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>"Ceramic and Cermet Composite Powders - PPM Ltd". Archived from the original on 11 September 2016. Retrieved 13 September 2016. <a href="https://web.archive.org/web/20160911133534/http://www.ppm.bc.ca/Cermet_Carbide_Nitride_Powder_Products.html" target="_blank">https://web.archive.org/web/20160911133534/http://www.ppm.bc.ca/Cermet_Carbide_Nitride_Powder_Products.html</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Günter Bauer, Volker Güther, Hans Hess, Andreas Otto, Oskar Roidl, Heinz Roller, Siegfried Sattelberger "Vanadium and Vanadium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. doi:10.1002/14356007.a27_367 <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Günter Bauer, Volker Güther, Hans Hess, Andreas Otto, Oskar Roidl, Heinz Roller, Siegfried Sattelberger "Vanadium and Vanadium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, 2005, Wiley-VCH, Weinheim. doi:10.1002/14356007.a27_367 <a href="/wiki/Doi_(identifier)" target="_blank">/wiki/Doi_(identifier)</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Hannink, R.; Murry, M. (1974). "Elastic moduli measurements of some cubic transition metal carbides and alloyed carbides". Journal of Materials Science. 9 (2): 223–228. Bibcode:1974JMatS...9..223H. doi:10.1007/BF00550945. S2CID 135599970. <a href="/wiki/Bibcode_(identifier)" target="_blank">/wiki/Bibcode_(identifier)</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> </ol>