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利用腐蚀电化学法及化学浸泡法研究了10NiCrMo钢在人工海水及3.5%NaCl溶液中的腐蚀行为。结果表明：10NiCrMo钢在人工海水中的自然腐蚀电位（-0.690伏）较在3.5%NaCl溶液（-0.661伏）中高低；三个月室内全、间浸腐蚀中，腐蚀速率大小主要受氧扩散控制影响，由于各种条件下形成的表面锈层特性不同，随着腐蚀时间增长，10Ni5CrMoV钢在人工海水及3.5%NaCl溶液中的全、间浸腐蚀速率随时间的延长而降低，1500h后趋向稳定； 10NiCrMo钢在人工海水中全、间浸腐蚀速率分别为0.338～0.459mm/a和0.279～0.435mm/a，在3.5%NaCl溶液中全、间浸平均腐蚀速率分别为1.200～1.141mm/a和0.840～0.404mm/a，在人工海水中全、间浸腐蚀速率比对应时间段内在3.5%NaCl溶液中小，在人工海水中及3.5%NaCl溶液中的间浸腐蚀速率比全浸低。

The corrosion behavior of 10Ni5CrMoV steel was studied under 3.5%NaCl and artifical salt-water with immersion and cyclic immersion test by chemical and electrochemical corrosion test methods. The result of the study shows that：The free corrosion potential of 10NiCrMoV steel is more lower in artifical salt-water （-0.690V）than 3.5%NaCl solution（-0.661V）,The corrosion behavior of 10NiCrMo steel can be effected mainly by oxygen diffusion control mechanism among laboratory simulate ocean circumstance corrosion test for three months. Because the character of the rust is different, the corrosion rate of 10NiCrMo steel under 3.5%NaCl and artifical salt-water with immersion and cyclic immersion test decreases in the final stage with time passing and then tends to be stable after 1500h . The rate of corrosion in artifical salt-water with immersion and cyclic immersion and in 3.5%NaCl solution with immersion and cyclic immersion are 0.338～0.459mm/a and 0.279～0.435mm/a and 1.200～1.141mm/a and 0.840～0.404mm/a respectively.The corrosion rate of 10NiCrMo steel is more lower in artifical salt-water with immersion and cyclic immersion test than 3.5%NaCl solution；The corrosion rate of 10NiCrMo steel is more lower in artifical salt-water and 3.5%NaCl solution with cyclic immersion test than with immersion test.