6. Carbides

The production of tantalum and niobium carbides is closely linked to that of cemented carbides.

Several processes are used [34] .

Carbides are prepared by carbothermic reduction of oxides according to the endothermic reaction :
$Ta {(Nb)}_{2} O_{5} + 7 C ? 2 Ta (Nb) C + 5 CO$
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Carbides

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