大量研究工作表明,N~+注入能强化金属表面。其强化作用机理可归纳为下述两种主要看法(此外尚有注入损伤效应使金属表面非晶化,微观表面凹凸度的均一化等等):(1)注入的N~+原子将与金属基体内的各种缺陷如位错,晶粒边界,第二相交界面等发生相互作用,产生一种过饱和固溶强化作用;(2)N~+将与基体材料产生一种合 Numerous studies have shown that N ~ + implantation can strengthen the metal surface. The mechanism of its strengthening can be summarized into the following two main views (in addition there is the effect of implantation damage to the metal surface amorphization, uneven microscopic surface roughness, etc.): (1) injected N ~ + atoms will be metal Various defects in the matrix such as dislocations, grain boundaries, the second intersection interface interaction occurs, resulting in a kind of supersaturated solid solution strengthening effect; (2) N ~ + with the matrix material to produce a combination of