Abstract Based on the fretting test system, the contact resistance of contact pairs with gold-plated PCB sample and different metal probe, under the different fretting conditions are investigated to evaluate the fretting characteristics. The environmental reliability assessment of the contact pairs after fretting is carried out through the thermal humidity experiment and salt spray experiment. The influence of environment on contacts reliability is evaluated by measuring and comparing the static contact resistance in the fretting region before and after the accelerated environmental experiment. It is found that the contact pair of silver-plated probe with thickness 4μm mating with gold-plated PCB sample has the best fretting characteristics and environmental reliability.

中文翻译：

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镀金PCB样品和不同金属探针接触的微动特性和环境可靠性

摘要 基于微动测试系统，研究了不同微动条件下接触对与镀金PCB样品和不同金属探针的接触电阻，以评估微动特性。通过热湿实验和盐雾实验对微动后接触对进行环境可靠性评估。通过测量和比较加速环境实验前后微动区域的静态接触电阻来评估环境对接触可靠性的影响。结果表明，4μm厚镀银探针与镀金PCB样品配合的接触对具有最佳的微动特性和环境可靠性。