Patent ID: 6486447
Filing Date: 2002-11-26
Classification: H05B,Y10T

Abstract:
A method for manufacturing an electric heating element comprising:forming a paste film including a mixture of a silicide-forming metal powder and a Si material on a preformed sintered electric insulating nitride or carbide ceramic substrate, said metal being selected from the group consisting of Cr, Mo, W, Fe, Ni, Co, B, P, Pt, Pd, Rh, Ir, Cu, Ag, V, Nb, Ta, Ti, Zr, Hf, Y, Mn, Ca, Mg, rare earth elements, Al and mixtures thereof; melting and fusing said Si material and said metal powder onto the surface of said ceramic substrate to form a mixture of (i) a silicide formed by reaction of the Si material with said silicide-forming metal powder, and (ii) Si; and solidifying the fused film to form a resistance heat-generating material film of a mixture of the silicide and Si having a microstructure of a metallurgically solidified structure including eutectic structure.