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US5254181A Method of nitriding steel utilizing fluoriding 失效
利用氟化氮渗氮方法

Method of nitriding steel utilizing fluoriding
摘要:
This invention relates to a method for forming a uniform, deep nitride layer on and in steel works at low cost, wherein a steel work is fluorided in heated condition in an atmosphere of a mixed gas composed of fluorine gas and inert gas and, then, nitrided in heated condition in an atmosphere of nitriding gas.
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