(中南大學(xué) 材料科學(xué)與工程學(xué)院，長(zhǎng)沙 410083)
摘 要: 總結(jié)鎂合金表面化學(xué)轉(zhuǎn)化膜的研究現(xiàn)狀，介紹鉻酸鹽轉(zhuǎn)化膜、錫酸鹽轉(zhuǎn)化膜、磷酸鹽/高錳酸鹽轉(zhuǎn)化膜、稀土轉(zhuǎn)化膜、植酸轉(zhuǎn)化膜和鉬酸轉(zhuǎn)化膜的處理工藝，討論磷酸鹽/高錳酸鹽轉(zhuǎn)化膜的成膜機(jī)理，分析各種化學(xué)轉(zhuǎn)化膜的優(yōu)缺點(diǎn)，展望今后鎂合金表面化學(xué)轉(zhuǎn)化膜的發(fā)展方向。
關(guān)鍵字: 鎂合金；化學(xué)轉(zhuǎn)化膜；腐蝕防護(hù)；磷酸鹽
magnesium alloys
（School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The research progress of the chemical conversion coatings on magnesium alloys was summarized and the treatment technologies of chromate films, stannate films, phosphate/permanganate films, rare-earth films and phytate films were reviewed. The formation mechanisms of the phosphate/permanganate conversion films were discussed. The merits and demerits of the various coatings were analyzed. And the developmental trends of the chemical conversion coatings on magnesium alloys were proposed.
Key words: magnesium alloys; chemical conversion coatings; corrosion prevention; phosphate
