尿素热分解气体软氮化,实质上是利用尿素分解出来的活性碳、氮原子进行碳、氮共渗的过程。由于它具有与盐浴软氮化相同的渗层结构和性能,又能解决盐浴毒性及废盐难处理等问题,因而受到普遍重视,并迅速得到推广应用。但是,氮化层深度太薄,通常只能获得几微米厚度的化合物层,是待进一步提高的问题。 Thermal decomposition of urea gas soft nitriding, is essentially the use of urea decomposition of activated carbon, nitrogen atoms for carbon and nitrogen infiltration process. Because it has the same infiltration layer structure and properties as the salt-nitrocarburizing, and can solve the problems of salt bath toxicity and waste salt refractory, etc., it has received universal attention and has been rapidly popularized and applied. However, the depth of the nitride layer is too thin, and generally only a few microns thick compound layer is obtained, which is a problem to be further improved.