研究了压铸镁合金AZ91D分别与黄铜、铝合金、316L不锈钢和A3钢组成的电偶在模拟的大气环境即盐雾和湿热的加速腐蚀试验中的电偶腐蚀行为及规律.结果表明:在此气相环境中，镁合金腐蚀倾向显著;多种因素可以加速镁合金的电偶腐蚀；盐雾实验中，盐的浓度、大阴极小阳极的面积比以及阴极材料相对于镁阳极的尺寸是加速镁合金电偶腐蚀的重要因素.
The galvanic corrosion behavior of magnesium alloy AZ91D coupled with dissimilar metal,including brass,aluminum alloy,316L stainless steel and A3 steel was investigated using accelerated testing in salt spray fog chamber and cyclic humidity apparatus.The results showed that:(1)magnesium alloy shows obviously corrosion sensitivity to the test environment;(2)The galvanic corrosion of magnesium alloy can be accelerated by many factors;(3)The concentration of salt and the relative areas of the large cathode coupled with a small magnesium alloy anode have an important effect on the accelerated galvanic corrosion in salt spray test.
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