Difference between seepage and coating
Coating and plating are physical methods. "Seepage" is a chemical change, different in nature.
Carburization of steel - is to heat low carbon steel in a carbon-rich medium to high temperature (generally 900--950℃), so that activated carbon atoms infiltrated into the surface of the steel, in order to obtain high carbon layer structure. After quenching and tempering at low temperature, the surface has high hardness, wear resistance and fatigue resistance, while the heart still maintains sufficient strength and toughness.
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