The purpose of such passivation operation
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Let me ask you: There is an electric heater in the workshop, and the electric heating rod in it is easily corroded by HF. Therefore, the company decided to passivate the electric heating rod by heating it with a mixture of compressed air and water vapor and passing it into the electric heater. Is this useful? On what principle? Thank you!:handshake
The so-called passivation is to form a dense protective film on the surface. The material on the surface of the electric heating rod should be aluminum. Add water vapor to increase the ambient temperature. Compressed air oxidation has a better effect. I don't know if this explanation is satisfactory.