Patent ID: 7331102
Filing Date: 2008-02-19
Classification: G01L,Y10T

Abstract:
1. A method for manufacturing an apparatus for detecting an amount of strain, comprising the steps of: (a) preparing a strain application member to which strain is to be applied; (b) forming an electrical insulating layer on said strain application member; (c) preparing material for a silicon film; and (d) forming the silicon film on said electrical insulating layer, utilizing said material to provide sensing elements thereon, said silicon film comprising a polycrystalline main layer and an interface-layer that comes into contact with the electrical insulating layer, wherein: said step (a) is carried out, utilizing martensitic precipitation hardened stainless steel, which comprises from 3 to 5 wt. % Ni, from 15 to 17.5 wt. % Cr and from 3 to 5 wt. % Cu, to form a main body of said strain application member; said method further comprises (e) subjecting, after said step (d), said silicon film to an annealing process at a temperature of from 540° C. to 590° C., thus crystallizing said interface-layer.