Junction resistance and connectivity evaluation method and evaluation apparatus of metal surface

摘要

PROBLEM TO BE SOLVED: To evaluate a joining property at a time when two metals are joined and an electrical connectability at the time when the two metals are brought into contact and connected electrically regardless of measuring conditions such as the contact areas of the two metals and a measuring environment.;SOLUTION: (a) The two metals 14 and 26 are brought into contact, and the change of a measured resistance R containing the electrical resistances of the contact sections of both metals 14 and 26 to the change of a compressive load F vertical to the contact surfaces is measured. (b) An evaluation coefficient ρ_f is obtained by applying the obtained measured resistance R and load F to the following formula. Formula: R=ρ_f/F+C (where ρ_f and C represent constants) (c) the joining property and connectability are judged on the basis of the magnitude of the evaluation coefficient ρ_f.;COPYRIGHT: (C)2008,JPO&INPIT