Supersonic wave can strengthen electroplating process, increase depositing speed and obviously improve electroplating layer quality The result of cathode polarization shows that these effects are owing to the great depolarization coming from the mechanic vibrating and cavitation effect of the supersonic wave when it is shaking the diffusion layer.
阴极极化曲线测定结果证明 ,产生这种效果的机理 ,从电极过程动力学观点看来 ,实质上是超声波的机械振动和空化现象在电镀溶液中对扩散层的特殊搅拌引起的强烈的去极化作用。
In combination with the results of stress corrosion cracking(SCC)tests,it is proposed that fatiguecrack growth for this steel in foregoing aqueoussolutions is controlled mainly by oxygen de-polarization reactions(ODR)rather than by hydrogen embrittlement(HE)mechanism unless cathodicpolarization result.
5%Nacl 和10%NH_4NO_3水溶液中的疲劳裂纹扩展速率(FCGR)及外加极化电位的影响进行了实验研究,结合应力腐蚀(SCC)实验,作者认为,除非在阴极极化条件下出现强烈充氢情况,该钢在中性水溶液中的麦劳裂纹扩展主要受氧去极化作用(ODR)控制而不是氢脆(HE)机制。
