What is Embalming?
Anti-corrosionIn electrical appliances, it refers to the effect of anti-acid substances on parts or to protect the parts from corrosion.
Anti-corrosion
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- Chinese name
- Anti-corrosion
- Foreign name
- Anti corrosion
- Alias
- anti-corrosion
- Latin name
- MORSUS
- Korean name
- Russian name
- Anti-corrosionIn electrical appliances, it refers to the effect of anti-acid substances on parts or to protect the parts from corrosion.
- Anti-corrosion classification
- All electrical products have anti-corrosion requirements, which are classified as follows:
- Indoor anti-corrosion type: F1
- Indoor anti-corrosion type: F2
- Outdoor anti-light corrosion type: W
- Outdoor anti-medium corrosion type: WF1
- Outdoor anti-corrosive type: WF2
Anti-corrosion changes structure
- Change the internal structure of the metal. For example, chromium and nickel are added to ordinary steel to make stainless steel.
Corrosion protection
- Cover the metal surface with a protective layer. For example, metal surfaces are painted, electroplated, or chemically formed to form a dense, corrosion-resistant oxide film.
Anti-corrosion electrochemical protection
- electrochemical protection method. Because the metal element cannot gain electrons, as long as the protected metal is used as the cathode of the electrochemical device for the reduction reaction, the cathode can eliminate the galvanic cell reaction that causes galvanic corrosion of the metal. Specific methods are: a. Cathodic protection method with external current. By using an electrolytic device, the protected metal is connected to the negative electrode of the power supply, and an inert electrode is used as the anode. As long as the applied voltage is strong enough, the protected metal can not be corroded. b. Cathodic protection of sacrificial anodes. A galvanic device is used to make a new galvanic cell from the protected metal and another more volatile electron. When a galvanic cell reaction occurs, the primary metal serves as the positive electrode (ie, the cathode), and is protected. What is corroded is the active metal, the negative electrode (ie, the anode). In addition, there are methods such as adding a corrosion inhibitor to slow down or prevent metal corrosion.