| Summary: | 碩士 === 高苑科技大學 === 機械與自動化工程研究所 === 100 === Oxide coating oＦ AZ91D alloy was prepared to improve anti-corrosion property by high voltage plating and micro-arc oxidation technique. In this study, the pulse-reverse plating formed a homogeneous micro-arc oxide layer that increased the hardness, thickness and corrosive resistance.
In this study, the optimum conditions of plating solution were established as followed：2 M sodium hydroxide, 0.05 M sodium citrate, 0.08 M sodium tetraborate, 0.2 M tetramethyl ethylene diamine, 0.2 M phosphoric acid, 0.1 M sodium silicate and at 6℃. The best parameter for treatment potential is 316 V.
Keywords：Micro-arc oxidation、AZ91D alloy、Corrosive 、Hardness.
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