2022 Volume 61 Issue 1 Pages 184-188
An investigation was carried out of the effects of sliding cycles and contact load on electrical contact resistance behavior of reflowed tin plating in reciprocating slide wear test. This paper discusses and reports experimentally observed results on electrical contact resistance behavior and wear behavior of reflowed tin plating during slide wear test with a varying load. Electrical contact resistance was measured via a four–terminal method by re–contacting the wear marks of samples after the slide wear test.
The main results are summarized as follows：(a) Electrical contact resistance increased with decreasing load and a larger number of sliding cycles. (b) This is conjectured to be due to deposition of tin oxides with a larger number of sliding cycles. (c) It is conjectured that tin oxides deposited more easily at the contact area with decreasing load. This is conjectured to be due to reduced discharge of tin abrasion powder outside the contact area due to decreased load.
