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首页> 外文期刊>Surface review and letters >Influence of surfactants on the corrosion properties of chromium-free electroless nickel deposit on magnesium alloy
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Influence of surfactants on the corrosion properties of chromium-free electroless nickel deposit on magnesium alloy

机译：表面活性剂对镁合金无铬化学镀镍层腐蚀性能的影响

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摘要

Influence of surfactants on the corrosion properties of chromium-free electroless nickel deposit were investigated on AZ91D magnesium alloy. The corrosion tests were carried out by immersion test (1 M HCl) and electrochemical polarization test (3.5 wt% NaCl). The surfactants in the electroless nickel bath increases the corrosion resistance properties of the deposit on the magnesium alloy. In addition, smoothness and amorphous plus nano-crystalline phase were increased and accounted for the significant corrosion resistance. As a consequence, the corrosion potential moved towards the positive direction and the corrosion current density decreased. The immersion tests also provided the same trend as that of electrochemical polarization test. On the whole, the study concluded that corrosion resistance was enhanced by including a surfactant in the electroless deposits on magnesium alloy.
机译：研究了表面活性剂对AZ91D镁合金上无铬化学镀镍层腐蚀性能的影响。通过浸没试验（1 M HCl）和电化学极化试验（3.5 wt％NaCl）进行腐蚀试验。化学镀镍浴中的表面活性剂提高了镁合金上沉积物的耐腐蚀性。另外，增加了光滑度和无定形加纳米晶相并说明了显着的耐腐蚀性。结果，腐蚀电位向正方向移动，腐蚀电流密度降低。浸没测试也提供了与电化学极化测试相同的趋势。总体而言，研究得出结论，通过在镁合金上的化学镀层中加入表面活性剂，可以提高耐腐蚀性。

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