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热处理对汽车散热器翅片腐蚀的影响

, PP. 180-183

Keywords: 翅片材料,汽车散热器,热处理,微观结构,腐蚀

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Abstract:

采用扫描电镜、透射电镜、动电位极化和浸泡实验研究了热处理对汽车散热器翅片材料在0.6mol/L(pH6)溶液中的腐蚀的影响.热处理模拟了控制气体的焊接方法.结果表明热处理对尺寸大于1μm的合金相没有影响,但增加了尺寸小于1μm的合金相的数目.同时降低了翅片材料的阳极活性且提高了其阴极活性.阴极活性的提高归因于阴极合金相数目的增多.阳极活性的降低可能是与富Si的合金相溶解在基体里并降低基体的阳极活性有关.

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