给出了镁合金表面处理的工艺配方,研究了草酸盐化学转化膜的微观形貌、结合力、导电性及抗蚀性.结果表明,转化膜由均匀细小、比较致密的颗粒构成,擦拭试验超过50次无颜色变化,试样表面的电阻率小于0.1 Ω·cm,盐雾试验超24h,性能达到使用标准.
The process formulation of magnesium alloy surface treatment was presented, and the micro-morphology, adhesion strength, conductivity and corrosion resistance of oxalate chemical conversion coating were studied. The results showed that the conversion coating is constituted by fine, uniform and compact grains, the wiping test exceeds 50 times with no color changes, the resistivity of sample surface is lower than 0.1 Ω·cm, and the salt spray test time is more than 24 h. The performance of conversion coating reaches application standard.
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