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在350℃研究了N~+剂量(3.0×10~(17)~12.0×10~(17) ions/cm~2)对304不锈钢离子注N的影响。利用扫描电镜、维氏显微硬度、X射线衍射仪和万能摩擦试验机对N~+注入层的硬度、相结构和耐磨性进行分析,并对微观机理进行分析。结果表明:经过不同N~+剂量后,钢表面生成了γN相,其表面光洁度、硬度和耐磨性均有所提高。在相同工艺条件下,注N~+剂量为9.0×10~(17) icons/cm~2时,304不锈钢的硬度可达369 HV0.025,与基材相比提高了61%,耐磨性相比基体也显著提升。
The effect of N ~ + dose (3.0 × 10 ~ (17) ~ 12.0 × 10 ~ (17) ions / cm ~ 2) on the ion implantation N at 304 stainless steel was investigated at 350 ℃. The hardness, phase structure and wear resistance of N ~ + implanted layer were analyzed by SEM, Vickers microhardness, X-ray diffractometer and universal tribometer. The microscopic mechanism was analyzed. The results show that γN phase is formed on the steel surface after different N ~ + doses, and the surface finish, hardness and wear resistance of the steel are improved. Under the same process conditions, the hardness of 304 stainless steel can reach 369 HV0.025 when the N ~ + dosage is 9.0 × 10 ~ (17) icons / cm ~ 2, which is 61% higher than that of the substrate. The wear resistance Compared to the substrate also significantly improved.