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What Are Interstitial Compounds?

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    Interstitial compounds are carbides and nitrides. They are chemically reacted so their atoms are placed in the interstitial spaces that exist between metal atoms. They are compounds that are extremely hard and very unreactive (except to some oxidants). They also have very high melting point.

    Tungsten carbide has a hardness of 9-10 on the Mohs' scale, which is very close to that of a diamond. Steel is also metallic carbide that is used in all human activities. Steel is mostly made of iron with up to 1.5 percent carbon. Many kinds of steels are made for particular purposes and may contain any number of metals like V, Ni, Mn, Cr, Mo, W. These are done to modify its properties. Hardened steel can be produced by immersing it in a mixture of NaCN , NaCl, or Na2CO3 which is heated up to a temperature of 870oC.
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    Fullon  

    answered 3 years ago

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