Salt-bath hardening treatment method for obtaining supersaturated solid solution from stainless steel surface
A kind of hardening treatment, stainless steel technology, applied in solid diffusion coating, metal material coating process, coating and other directions, can solve the problems of not reducing corrosion resistance, few examples, polluting the environment, etc., to reduce the melting point of salt bath, Excellent fluidity and stability
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[0027] Example 1: Any of the above components is subjected to salt bath hardening treatment on austenitic stainless steel at a temperature below 480° C. for 6-10 hours.
Embodiment 2
[0028] Example 2: Austenitic stainless steel is subjected to salt bath hardening treatment at a temperature below 480° C. for 8 hours with any of the above components.
Embodiment 3
[0029] Example 3: Austenitic stainless steel was subjected to salt bath hardening treatment at a temperature of 450° C. for 8 hours with any of the above components.
[0030] The salt bath hardening treatment method for obtaining a supersaturated solid solution on the surface of the stainless steel is to perform salt bath hardening treatment on the austenitic stainless steel at a temperature of 460° C. for 8 hours.
[0031] The performance of the sample after salt bath hardening treatment at a temperature below 480°C for 8 hours is as follows:
[0032] like figure 1 As shown, it can be seen from the photo that the hardened layer is white and bright, without the precipitation of chromium nitride, showing higher corrosion resistance than the base metal.
[0033] from figure 2 It can be seen that the hardened sample still maintains the original face-centered cubic crystal structure of austenitic stainless steel, and no new phase is formed. Compared with unhardened austenitic ...
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