用失重法和恒电位极化法研究了45#碳钢、1Cr18Ni9Ti、304不锈钢和Ni-P合金镀层在含S介质中的腐蚀性.结果表明,低温条件下，S2-浓度变化对4种材料阴极极化和阳极极化影响较小，1Cr18Ni9Ti和304不锈钢的极化曲线相似，为典型的阴、阳极控制的电化学腐蚀过程，自腐蚀电位和自腐蚀电流相近;Ni-P合金镀层出现了钝化区;45#碳钢出现了阳极控制的扩散过程.温度升高，腐蚀速率增大，1Cr18Ni9Ti和304不锈钢的极化率变大，Ni-P合金镀层的钝化性能减弱， 1Cr18Ni9Ti、304不锈钢和Ni-P合金镀层均是含S介质中的耐蚀材料.
The corrosion behaviors of 45# carbon steel,1Cr18Ni9Ti,304 stainless steel,and Ni-P alloy coatings in sulfur-bearing solution were studied by potentiostatic polarization method and gravimetric method.The results showed that at lower temperatures,the effect of sulfur concentration on cathode polarization and anodic polarization of four kinds of materials is weak.The polarization curves of 1Cr18Ni9Ti and 304 stainless steel are similar,their polarizations both are typical electrochemical corrosion course,and their self-corrosion potential and self-corrosion current are similar too.Passivation appears in Ni-P alloy coatings,and diffusion controlled by anode appears in 45# carbon steel.As the temperature increases,the corrosion rate increases,and the polarization rates of 1Cr18Ni9Ti and 304 stainless steel rise,whereas the passivation of Ni-P alloy coatings weakens.1Cr18Ni9Ti,304 stainless steel and Ni-P alloy coatings are corrosion resistance materials in sulfur-bearing solution.
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