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一、前言为了提高钢表面的使用性能,通常把钢材进行表面氮化处理,使其形成表面渗氮层从而提高钢表面的耐磨性和抗腐蚀性能。众所周知,渗氮层中γ＇-Fe_4N和各种含氮量的ε相都能强化钢的表面。但ξ-Fe_2N却为脆性相对钢表面性能起着有害作用。因此定性定量测定渗氮层中的各相及其含量对改进渗氮工艺使其提高各种强化相的含量,抑制ξ-Fe_2N相的产生都是很有意义的。渗氮层的X射线相分析,一向为人们所关注。但由于人们所使用的1-1236(ε-Fe_3N)和3-0925(ε-Fe_(2-3)N)JCPDS卡片存在着错
I. Introduction In order to improve the serviceability of the steel surface, the surface of the steel is usually nitrided to form a surface nitrided layer so as to improve the wear resistance and corrosion resistance of the steel surface. As we all know, nitriding layer γ’-Fe_4N and various nitrogen content of the ε phase can strengthen the steel surface. However, ξ-Fe 2 N has a detrimental effect on the properties of steel against brittleness. Therefore, qualitative and quantitative determination of each phase and its content in the nitrided layer is of great significance to improve the nitriding process so that it can increase the content of various strengthening phases and inhibit the production of ξ-Fe 2 N phase. Nitriding layer X-ray phase analysis, has always been of concern. However, due to the use of 1-1236 (ε-Fe_3N) and 3-0925 (ε-Fe_ (2-3) N) JCPDS cards there is a fault