ハンマリング加振機構による電気接点の劣化現象: 接触抵抗について（12）

摘要

著者らは，摺動接触機構を用いて，摺動力2.0Nおよび0.3N，摺動振幅土5.0μm および土10.0μm の条件で，それぞれ約2500 万回の実験を行い，抵抗値の増加を測定した．さらに，接触抵抗の時系列変動における接点の相対変位に与えるパラメータ（摺動振幅・摺動力）の検討をした．接点の相対変位に与えるパラメータ（摺動振幅・摺動力）に対して，抵抗値変動開始時期と消費エネルギーにおいては相関が見られ，摺動振幅と摺動力との相関に関して，接触面における堆積物の動的平衡を考慮した酸化物蓄積をも考慮したモデルの必要性が示唆された．%Authors measured increasing resistances on electrical contacts by means of sliding contact mechanism respectively on the conditions that (1) frictional forces were 2.0N or 0.3N and (2) sliding amplitudes were ±5.0μm or ±10.0μm under the operation number of about 25milions. It was suggested that there was potentiality to make a model of the tendencies of contact variations in the primary stages in the above cases. It was studied that there were the parameters (sliding force and sliding amplitude) caused the relative displacements of the electrical contacts on the time-sequential fluctuations of the contact resistances. And it was suggested that the fretting corrosion model or sliding contact one would be applied to the fluctuation of contact resistance.