Method for sintering tungsten powder
AssigneeNational Institute for Materials Science
InventorYoshinari Kaieda
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Abstract
A formed body prepared by compacting tungsten powders is embedded in 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, by the heat of formation released, a temperature of a formed body is instantaneously elevated to induce a sintering reaction, and a high temperature state is retained to convert a whole of the formed body into sintered tungsten.
Claims12
A method for sintering tungsten powders, which comprises the steps of embedding a formed body prepared by compacting a tungsten powder 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, raising a temperature of the formed body instantaneously by heat of formation released and inducing e a sintering reaction, and converting into sintered tungsten.
Dependencies are inferred from the claim text.