Patent ID: 9153365
Filing Date: 2015-10-06
Classification: G01K,H01C

Abstract:
1. A temperature sensing element comprising: a thermistor that has electrical characteristics which change with temperature; and a pair of metal electrodes that are bonded onto a surface of the thermistor, wherein: the thermistor is composed of Si-base ceramics including silicon nitride which is a matrix component and silicon carbide which is contained in the silicon nitride; the pair of metal electrodes include Cr and a metal element that has a Si diffusion coefficient higher than that of Cr; and a diffusion layer, in which a silicide of the metal element is present in a crystal grain boundary of the Si-base ceramics that configures the thermistor, is formed in an interface between the thermistor and the pair of the metal electrodes wherein the pair of the metal electrodes have a liner expansion coefficient of 11×10