摘要
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0.6 mol/L(pH 6)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.
The effects of heat treatment on the corrosion behavior of fin materials have been studied in 0.6 mol/L NaCl solutions by SEM,TEM,potentiodynamic polarizations and immersion test.It has established the relationship between the microstructure and electrochemical properties of fin materials before and after a heat treatment to simulate that associated with controlled atmosphere brazing.The results indicate heat treatment decreases the anodic reactivity and increases cathodic reactivity of the alloy.
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2010年第3期180-183,共4页
Corrosion Science and Protection Technology