A layer of black film is present on the surface of plasma carburized AISI 316 austenitic stainless steel, which affects the surface quality and corrosion resistance of the carburized stainless steel.

• 摘要奥氏体不锈钢离子渗碳后，表面覆盖了一层结合牢固、致密的黑色薄膜，不仅影响表面美观度，还影响了耐腐蚀性能。