Process for preparing WC cemented carbide
AssigneeNational Institute for Materials Science
InventorYoshinari Kaieda
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Abstract
W powders and C powders are mixed at a ratio of 1:1, the raw material mixed powder is compacted to prepare a formed body, the formed body is embedded into a powder mixture capable of performing combustion synthesis, a part of the powder mixture is powerfully heated to ignite the part and perform combustion synthesis, and according to heat of formation released, a reaction represented by W+C→WC is induced and the reaction is subjected to combustion synthesis to convert a whole of the formed body into sintered WC.
Claims12
A process for preparing a WC cemented carbide, which comprises the steps of mixing W powders and C powders at a ratio of 1:1, compacting a raw material mixed powders to obtain a formed body, embedding the formed body into a powder mixture capable of performing combustion synthesis, powerfully heating the powder mixture at a part to ignite the part and perform combustion synthesis, inducing a reaction represented by W+C→WC according to heat of formation released during combustion synthesis, and subjecting the reaction to combustion synthesis to convert a whole of the formed body into sintered WC.
Dependencies are inferred from the claim text.