一、前言气体软氮化虽能赋予钢铁另件优良的表面性能,但炉气中含有少量剧毒的氢氰酸,容易污染环境,影响工人健康。近年来,国外发表了以不燃性气体为载气的氮化法和加氧氮化。国内北京内燃机总厂也开展了用氨、氮、氧混合气体进行短时氮化的试验。我 I. INTRODUCTION Although the gas nitrocarburizing can give good surface properties to other pieces of steel, the furnace gas contains a small amount of highly toxic hydrocyanic acid, which can easily pollute the environment and affect workers’ health. In recent years, foreign countries published a non-flammable gas carrier gas nitriding and nitrogenation. Domestic Beijing Internal Combustion Engine Plant also carried out with ammonia, nitrogen, oxygen mixed gas short-term nitriding test. I