<正> 用离子束对金属表面进行改性,已积累了大量理论和实验结果,尤其是近年来在磨损,腐蚀等方面已取得某些工业应用的经验,引起了更多的腐蚀及防护科学工作者的注意。 本文介绍对工业纯铁、工业纯镍和S.S.316L钢经低温(LN_2)B~+注入和Fe-Ti系经低温(LN_2)离子束混合的金属表面进行阳极极化研究的结果。 实验方法
B~+ implantations to pure iron, pure nickel and S. S. 316L and ion-mixing with Fe-Ti system are conducted at low temperature in a liquid nitrogen cooled chamber. Electron diffraction and polarization curves are made from the implanted and mixed surfaces. Results show that the electrochemical behavior of the ion-implanted and ion-mlxed surfaces prevails substantially over that of their matrixes. Multi-polarization curves of the same specimen are used to study the corrosion behavior of the ion-implanted and ion-mixed surfaces, it is found that corrosion resistance correlates well with concentration-depth profile of ions.
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