接点低速開成時の定常接触電圧到達時間の測定（その2）銀パラジウムの含有率と定常接触電圧到達時間の関係

摘要

The relationship between initial phenomenon of the opening electrical contacts and the physical properties is not clear yet. In this paper, to clarify the contact voltage of the electrical contact, the steady contact voltage and the arrival time were measured at the slowly making silver palladium alloy contacts. And the relationship between AgPd content rate and the arrival time of the steady contact voltage was examined. In the results, the steady contact voltage correlated with the arrival time of the steady contact voltage, and the arrival time of the steady contact voltage correlated with the inverse of heat conductivity. It was demonstrated that the low resistivity materials have not only the low contact resistance but also the short arrival time of the steady contact resistance.%電気接点の閑雅初期現象と物性値の関係は未だ不明な部分が多い．そこで，本報告では接触電圧の時間変イヒを知るために銀パラジウム電極を低速で接触させ，定常接触電圧とそれに到達するまでの時間を測定し，Pd含有率とどのような関係にあるのかを調べた．その結果，定常接触電圧とそれに達するまでの時間は正の相関が見いだされた．また定常接触電圧に達するまでの時間が熱伝導率の逆数と相関があり，電気抵抗率が小さい材料は，接触抵抗が低くなるだけではなく抵抗値が一定となる定常接触までの時間も短いことが明らかとなった．