Patent ID: 9689570
Date: 2017-06-27
CPC Classifications: F23Q,H05B

Claim:
1. A heater, comprising: a heating element that includes a first element selected from the group consisting of V,Nb, Ta, Mo, and W; a pair of leads bonded to respective end portions of the heating element; and an insulating base in which the heating element and the leads are embedded; wherein the heating element and the insulating base are formed of a sintered body which is integrally sintered; wherein the heating element further includes a compound including one or more second elements selected from the group consisting of V, Nb, Ta, Cr, Mo, W, Mn, and Fe, wherein the one or more second elements are selected so that the one or more second elements are different from the first element; and wherein the one or more second elements are present in the insulating base at a proportion of 1 ppm or less at a distance of 100 μm from the heating element.