Potassium hydroxide is an alkaline substance we learned in junior middle school, which has good application effect in many fields. Some people may question whether it is related to micro arc oxidation of magnesium alloy. Today, let's talk about the relationship between them.

当微弧氧化程度降低时，金属表面会产生微弧光，这与外加电压的电导率直接相关。当电解液的电导率较高时，在转移或迁移等离子体时效果更好，在此过程中，一些弧光会更容易出现在薄膜表面，因此在使用时，降低外部增加的电压，以减少产生的微弧光。

When the degree of micro arc oxidation decreases, micro arc light will be generated on the metal surface, which is directly related to the conductivity of the applied voltage. When the conductivity of electrolyte is high, the effect is better when transferring or migrating plasma. In this process, some arc light will more easily appear on the film surface. Therefore, when in use, reduce the external increased voltage to reduce the micro arc light.

当在硅酸盐溶液中加入适当浓度的氢氧化钾时，会发现氧化膜的厚度再次发生变化。氧化膜的厚度随着浓度的增加而增加，但当浓度增加到一定程度时，厚度增加的频率会慢慢降低，浓度逐渐增加到一定程度后，厚度没有变化。因此，我们可以看到，当浓度再次增加时，薄膜也在逐渐增加。

When an appropriate concentration of potassium hydroxide is added to the silicate solution, the thickness of the oxide film will change again. The thickness of oxide film increases with the increase of concentration, but when the concentration increases to a certain extent, the frequency of thickness increase will slowly decrease. After the concentration gradually increases to a certain extent, the thickness does not change. Therefore, we can see that when the concentration increases again, the film is also gradually increasing.

除了初次，我们会发现当硅酸盐溶液中碱性物质的浓度较低时，薄膜仍然可以正常氧化。因此，当加入碱性物质时，它们会影响成膜效率。

Except for the first time, we will find that when the concentration of alkaline substances in silicate solution is low, the film can still be oxidized normally. Therefore, when alkaline substances are added, they will affect the film-forming efficiency.

以上介绍的是氢氧化钾与镁合金氧化的关系。其实，我们对这一内容有了更深的理解之后，就可以更好地应用碱性物质，在使用各种材料时，需要选择更合适的方式。

The above describes the relationship between potassium hydroxide and magnesium alloy oxidation. In fact, after we have a deeper understanding of this content, we can better apply alkaline substances. When using various materials, we need to choose a more appropriate way.