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以工业级硅酸钠为电解液，铝材在交流电压作用下进行等离子微弧氧化反应，电压升高，膜厚增大。用Ｘ－ 射线衍射分析法和扫描电镜法检测，氧化膜为非晶态氧化铝陶瓷膜。硬度试验和腐蚀试验表明：该膜硬度高、耐强碱腐蚀性强。
Industrial grade sodium silicate electrolyte, aluminum under the action of AC voltage plasma micro-arc oxidation reaction, the voltage increases, the film thickness increases. X-ray diffraction analysis and scanning electron microscopy showed that the oxide film was an amorphous alumina ceramic film. Hardness test and corrosion test showed that the film has high hardness and strong alkali corrosion resistance.