Why does the heat sink get corroded?

Heat sink is a device used to dissipate heat and is widely used in various mechanical equipment and industrial production.However, during long-term use of the heat sink, corrosion problems may also occur.Corrosion of the radiator means that the surface or interior of the heat sink is corroded by chemical substances, resulting in a decrease in the heat dissipation effect of the heat sink. Corrosion will not only affect the service life and performance of the heat sink, but may also lead to equipment failure and safety hazards.Therefore, it is also a very important step to understand the reason why the heat sink is corroded.
                                                                                                                 
1. Environmental issues
If the heat sink is used in a humid environment for a long time, it is easily corroded by moisture and oxygen in the air. At the same time, corrosion problems may occur when it is used in a high temperature environment for a long time.
2. Water quality issues
In the cooling system, some water quality contains high salt content and impurities. These substances will deposit on the surface of the heat sink to form corrosive substances under long-term use, causing the heat sink to be corroded.
3. Maintenance issues 
If the heat sink is not cleaned and maintained for a long time, dust and dirt will accumulate on the surface of the heat sink, hindering the heat dissipation effect of the heat sink.At the same time, irregular replacement of the coolant will gradually accumulate corrosive substances and accelerate the corrosion rate of the heat sink.
4. Material issues 
The most common heat sink materials currently include copper, aluminum and iron. These metals may undergo electrochemical reactions and cause corrosion under certain environments.In addition, the welding materials used in some heat sink may not match the metal materials and can cause corrosion problems.

There are many reasons why the heat sink is corroded, so we should choose the appropriate heat sink material, pay attention to the water quality and usage environment, and perform anti-corrosion treatment regularly To protect the integrity and thermal efficiency of the heat sink, extend its service life, and ensure the normal operation of the heating system.