近来,为了强化化学热处理,出现了将渗入温度提高至1100℃的倾向[1]。然而,为了实现这些过程,应当研制特殊钢,其奥氏体晶粒的长大温度应高于1100℃。此外,在高温情况下缩短了无马弗炉的使用期限,并使炉内气氛成分的调节复杂化。所以,有前途的是研制氮基气氛。在[2—4]参考资料中推荐采用附加CO_2、H_2、NH_3的氮气氛, Recently, in order to enhance the chemical heat treatment, there has been a tendency to increase the infiltration temperature to 1100 ° C [1]. However, in order to realize these processes, special steels should be developed whose austenite grain growth temperature should be higher than 1100 ° C. In addition, the use of a muffle-free furnace is shortened at high temperatures and the regulation of the atmosphere components in the furnace is complicated. So, promising to develop a nitrogen-based atmosphere. In [2-4] reference materials recommended to use additional CO_2, H_2, NH_3 nitrogen atmosphere,