目的 比较实验室试验结果与实海挂片结果对B10和H62两种铜合金腐蚀性能评价的异同之处.方法采用线性极化、电化学阻抗、显微形貌观察等,比较两种铜合金在实验室模拟海水中的的腐蚀速率、点蚀倾向,结合反应机理、腐蚀形貌、环境等外部因素,分析导致实验室与实海环境下出现差异的原因.结果 除榆林海域外,实海挂片与实验室结果都表明,B10试样的平均腐蚀速率小于H62.B10和H62两种铜合金随温度升高腐蚀速率增大,在实验室和实海情况下表现出一致性,且平均腐蚀速率都随浸泡时间的延长而降低.结论 在实海环境中,温度不是影响点蚀的主要因素,微生物等其他环境因素会对点蚀产生较大影响.%Objective To compare the similarities and differences between results of laboratory simulation and real sea hanging sheet to evaluate the corrosion performance of the two copper alloys. Methods Certain tests such as linear polarization, electrochemical impedance and microstructure analysis were carried out to compare corrosion rate, pitting corrosion tendency, reaction mechanism, corrosion morphology, environment and other external factors of the two kinds of copper alloys in simu-lated seawater. Results Except Yulin sea area, both the real sea hanging tablets and the laboratory results show that the average corrosion rate of B10 was less than that of H62. The corrosion rate of B10 and H62 were consistent with the increase of temper-ature; and the average corrosion rate decreased with the increase of immersion time. Conclusion In the practical environment, the temperature is not the main factor which influences the pitting. Microorganisms and other environmental factors have great influence on the pitting.
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