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.

當(dāng)微弧氧化程度降低時(shí)，金屬表面會(huì)產(chǎn)生微弧光，這與外加電壓的電導(dǎo)率直接相關(guān)。當(dāng)電解液的電導(dǎo)率較高時(shí)，在轉(zhuǎn)移或遷移等離子體時(shí)效果更好，在此過程中，一些弧光會(huì)更容易出現(xiàn)在薄膜表面，因此在使用時(shí)，降低外部增加的電壓，以減少產(chǎn)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.

當(dāng)在硅酸鹽溶液中加入適當(dāng)濃度的氫氧化鉀時(shí)，會(huì)發(fā)現(xiàn)氧化膜的厚度再次發(fā)生變化。氧化膜的厚度隨著濃度的增加而增加，但當(dāng)濃度增加到一定程度時(shí)，厚度增加的頻率會(huì)慢慢降低，濃度逐漸增加到一定程度后，厚度沒有變化。因此，我們可以看到，當(dāng)濃度再次增加時(shí)，薄膜也在逐漸增加。

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，我們會(huì)發(fā)現(xiàn)當(dāng)硅酸鹽溶液中堿性物質(zhì)的濃度較低時(shí)，薄膜仍然可以正常氧化。因此，當(dāng)加入堿性物質(zhì)時(shí)，它們會(huì)影響成膜效率。

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.

以上介紹的是氫氧化鉀與鎂合金氧化的關(guān)系。其實(shí)，我們對這一內(nèi)容有了更深的理解之后，就可以更好地應(yīng)用堿性物質(zhì)，在使用各種材料時(shí)，需要選擇更合適的方式。

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.