1047 Effect of Chemical Conversion Coating on the Fatigue behavior of Extruded AZ61 Magnesium Alloys

概要

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It has been observed that under corrosive environments such as high humidity and sprayed 5 wt.% NaCl environment, the fatigue strength of extruded AZ61 magnesium alloys drastically reduces and the reduction rates of fatigue limit under high humidity, NaCl environments were 0.22, 0.85, respectively. However, one of the most effective ways to prevent corrosion is to coat the base material. In the present study, the fatigue performance of the non-chromium conversion coating on extruded AZ61 magnesium alloys has been evaluated under corrosive environments. The results indicated that, the non-chromium conversion coating alone can protect the substrate material from the attack of high humidity environment but cannot protect the substrate material under 5% NaCl environment. Therefore, it is suggested that the non-chromium coating can work to a certain degree of corrosive attack but it is not enough to prevent the attack of 5%NaCI environment.
一般社団法人日本機械学会の論文
2008-08-02