The mechanism of a detailed surface transformation of fretting corrosion

摘要

Recently, according to downsizing of connectors which applied to automobile, reductions of contact load in connectors are required. For ensuring connecting reliability, it is serious problems that fretting corrosion, which is a typical problem of low-load electrical contacts, happens. In this study, influence of fretting corrosion on lifetime of tin plated contacts which is widely used in automotive connectors was clarified in more precise.As a result of having observed a detailed surface about the contact surface transformation in the fretting corrosion, the rise of the contact resistance happens because of generated fretting debris.