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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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预蠕变对奥氏体不锈钢和黄铜应力腐蚀的影响
, PP. 80-86
Keywords: 预蠕变,应力腐蚀,阴极保护,304钢,黄侗
Abstract:
用恒载荷和恒位移试样分别研究了预蠕变对奥氏体不锈钢在成膜(42％MgCl_2)和不成膜(0.5mol/LHCl+0.5mol/LNaCl)溶液,以及黄铜在氨水溶液中应力腐蚀的影响结果表明,如用恒载荷试样,则无论是不锈钢还是黄铜,预蠕变对应力腐蚀断裂时间和门槛值均没有影响;如用恒位移试样,则预蠕变能使不锈钢和黄铜应力腐蚀门槛值成倍提高黄铜在氨水中加载阴极保护足够长时间后能抑制随后开路条件下的应力腐蚀,这归因于阴极极化改变溶液成分和pH值,而不是预蠕变的影响
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