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通过电解刻蚀在铝合金表面形成图纹， 然后再阳极氧化、电解着色， 可使铝合金具有多彩的装饰性。电解刻蚀液由形成阻挡层的物质和具有溶解（ 刻蚀） 作用的物质组成。电解刻蚀图纹的形成与电极表面析出的氢气有直接关系， 氢气泡尺寸越大， 在电极表面滞留的时间越长， 则图纹的刻痕越深、越宽。图纹处氧化膜的孔径、孔密度和厚度较大， 电解着色时可沉积较大量的金属， 呈现出较深的颜色， 从而使铝合金表面具有对比鲜明的彩色图案外观。
Electrolytic etching formed on the surface of aluminum alloy pattern, and then anodic oxidation, electrolytic coloring, aluminum alloy can have colorful decorative. Electrolytic etching solution from the formation of the barrier layer material and has dissolved (etching) composition. The formation of the electrolytic etching pattern is directly related to the hydrogen gas precipitated on the surface of the electrode. The larger the hydrogen bubble size is, the longer the residence time on the electrode surface is, the deeper and wider the pattern notch is. The pattern of the oxide film pore size, pore density and thickness larger, electrolytic staining can deposit a larger amount of metal, showing a darker color, so that aluminum alloy surface with a contrasting color pattern appearance.