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国内常用的渗氮方法都未进行氮势控制,渗层脆性过高,研究严格控制渗氮层质量的方法已日益迫切。对于一些要求高韧性的渗氮件,以往多采用机械磨削或化学方法或氢还原法将白层除去,不仅成本高,而且扩散层中依然存在脉状或网状氮化物,不能彻底解决渗层脆性问题。T.Bell 等开创了可控渗氮的成功先例,获得既无白层又无网状氮化物的高硬度渗氮层,但是用氢气作为稀释气,安全措施复杂。因此还有研究其它可控渗氮方法的必要。
The nitriding methods commonly used in China are not controlled by the nitrogen potential, and the brittleness of the infiltrated layer is too high. It is increasingly urgent to study the method of strictly controlling the quality of the nitrided layer. For some high toughness nitriding pieces, in the past more mechanical grinding or chemical methods or hydrogen reduction method to remove the white layer, not only high cost, and the diffusion layer is still veins or mesh nitride, can not completely solve the seepage Layer brittleness problem. T. Bell and others pioneered the successful precedent of controlled nitriding and obtained high-hardness nitriding layers that are free of white and network-like nitrides. However, safety measures are complex with hydrogen as the diluent. Therefore, there is a need to study other controlled nitriding methods.