碳钢的自腐蚀电位随时间正移，腐蚀速率降低。
The potential of carbon steel increased and its corrosion rate decreased over experiment time.
镀覆非晶金刚石膜纯钛表面自腐蚀电位和过钝化电位正移。
The self-corrosive potential and the over-passivation potential of the pure titanium after the surface modification were increased.
试验表明：表面有沉积物时，碳钢自腐蚀电位负移、自腐蚀速率减小；
The test shows the corrosion self electric potential has negative displacement and the corrosion self rate is reduced if there is deposit on the wall.
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