一、概述氮化是一种比较先进的热处理工艺,它的特点是处理温度低,在工件变形极小的情况下,使其获得极高的表面硬度、耐磨性、耐蚀性和尺寸稳定性,提高疲劳强度。因此,氮化工艺在精密机械和仪器制造业中得到了广泛的应用。但是由于普通气体氮化处理周期很长(40—72小时)及表面有脆性,限制了它的广泛应用。因而,近年来陆续出 I. Overview Nitriding is a more advanced heat treatment process, which is characterized by low processing temperature, deformation of the workpiece in the case of minimal, so that it obtains a very high surface hardness, abrasion resistance, corrosion resistance and dimensional stability Sex, improve fatigue strength. Therefore, the nitriding process in the precision machinery and equipment manufacturing industry has been widely used. However, due to the long cycle of ordinary nitriding (40-72 hours) and the brittleness of the surface, it limits its wide application. Therefore, one after another in recent years