一、概述弱磁场气体氮化法是一种新的热处理工艺方法。据文献[1,2]报道,在纯氨气体氮化过程中,施加微弱交变磁场可使氮化过程加快2—3倍,并排除或降低氮化层的脆性,显著提高氮化层的耐磨性、抗擦伤性和疲劳强度。钢铁属于磁性物质。它的内部是由许多磁畴组成。磁畴内小磁体的排列是有序的,而磁畴之间的排列是无序的。钢铁处于磁场中,则磁畴之间也应是有序排列,因而氮原 First, an overview of weak magnetic field gas nitriding is a new heat treatment process. It has been reported in the literature [1, 2] that applying a weak alternating magnetic field during nitridation of pure ammonia gas can accelerate the nitriding process by 2-3 times and eliminate or reduce the brittleness of the nitrided layer and significantly improve the nitriding layer Abrasion resistance, scratch resistance and fatigue strength. Steel is a magnetic material. Its interior consists of many magnetic domains. The arrangement of small magnets in a magnetic domain is orderly, and the arrangement of magnetic domains is disorderly. Steel in the magnetic field, the magnetic domain should be ordered between the order, and thus nitrogen