Patent ID: 11932579
Assignee: KANTHAL AB
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A process of manufacturing a chromium alloyed molybdenum silicide portion of a heating element comprising the steps of:
forming a mixture of a chromium powder and a silicon powder;
reacting the mixture to a reaction product in an inert atmosphere at a temperature of at least 1100° C. but not more than 1580° C.;
converting the reaction product to a powder comprising CrSi2;
forming a powder ceramic composition by mixing the powder comprising CrSi2 with a MoSi2 powder;
forming the portion of the heating element; and
sintering the portion of the heating element in a temperature of from about 1450° C. to about 1700° C.;
wherein the chromium powder and the silicon powder are provided separately to the mixture, and
wherein the forming step comprises subjecting the ceramic powder composition to an isostatic forming pressing process wherein said process comprises the step of:
adding the ceramic powder composition to a capsule which has at least part of the shape of the desired object; and
subjecting said capsule to a predetermined pressure at a predetermined temperature for a predetermined time.