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本文综合报导了清华大学近年来在离子注入和离子束混合金属表面改性研究方面所取得的成果。N~+离子注入使GCrIS等近十种钢材的耐磨性能提高几倍到上百倍。钢材的热处理状态、离子注入剂量、剂量率对钢材的注入效果有很大影响。N~+离子注入对车刀耐磨性无明显改善。电化学性能研究说明,B~+、P~+离子注入显著地改善了镍和S.S.316L在水溶液中的抗蚀性能。电子衍射分析表明,某些试样得到了非晶态结构。用离子束混合方法分别在Cu-Ag系和Fe-Ti系中得到一系列单相亚稳态合金,它们的点阵常数与成分呈稍有隆起的直线关系。其中Fe_55Ti_45得到非晶态,并研究了其加热转变。
This article comprehensively reports the achievements made by Tsinghua University in ion implantation and ion beam mixed metal surface modification in recent years. N ~ + ion implantation makes GCrIS nearly ten kinds of steel such as wear resistance increased several times to hundreds of times. Heat treatment of steel state, ion implantation dose, dose rate on the injection of steel has a great effect. N ~ + ion implantation on the tool wear resistance no significant improvement. Electrochemical performance studies show that B ~ +, P ~ + ion implantation significantly improves the corrosion resistance of nickel and S.S.316L in aqueous solution. Electron diffraction analysis showed that some samples obtained amorphous structure. A series of single-phase metastable alloys were obtained by ion beam mixing in Cu-Ag and Fe-Ti alloys, respectively. Their lattice constants and compositions showed a slight uplift. Among them Fe_55Ti_45 obtained amorphous, and studied its heating transition.