Being junction Characteristic joint Characteristic evaluation method of the metal surface and junction

摘要

PROBLEM TO BE SOLVED: To evaluate the joining properties and electric connectivity of a metal without depending on the measuring condition or environment such as a contact area or the like of two kinds of metals.;SOLUTION: In the process (a), a measuring probe 16 is brought into contact with the metal 12 being an evaluation target and a change in the actually measured resistance R including the electric resistance of the contact part of the metal 12 and the measuring probe 16 with respect to a change in the pressure load F of the measuring probe 16 is measured. In the process (b), the calculated actually measured resistance R and the pressure load F is adapted to the formula: R=ρ_f/F+C (wherein ρ_f and C are a constant) to calculate an evaluation coefficient ρ_f. In the process (c), the quality of the joining properties and connectivity of the metal is judged on the basis of the magnitude of the evaluation coefficient ρ_f.;COPYRIGHT: (C)2008,JPO&INPIT