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Influence of plasma electrolytic oxidation on mechanical characteristics of NiTi alloy

机译：等离子体电解氧化对NiTi合金力学性能的影响

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摘要

The aim of the present work was to examine the effect of the plasma electrolytic oxidation (PEO) process on the mechanical properties of nitinol. The comparative evaluation of the microhardness and elastic modulus of the nitinol alloy and the PEO coating was carried out. The analysis of the obtained data confirmed closeness of the microhardness and elastic modulus with the respective values for nitinol layers adjacent to the coating. The reason for such a transformation on the boundary with the coating layers of nitinol could consist in the alloy amorphism as a result of the microsecond high temperature plasma influence occurring under PEO conditions and followed by sharp material cooling after attenuation of the plasma microdischarge. Unlike the thermal air oxidation (as a result, the hardness and fragility of the titanium alloy surface layers increase sharply), the changes described above facilitate increase of the mechanical and corrosion mechanical strength of the processed sample.
机译：本工作的目的是研究等离子体电解氧化（PEO）工艺对镍钛诺机械性能的影响。对镍钛诺合金和PEO涂层的显微硬度和弹性模量进行了比较评估。对获得的数据的分析证实了与涂层相邻的镍钛合金层的显微硬度和弹性模量与各自值的接近性。在镍钛诺涂层边界上发生这种转变的原因可能是由于在PEO条件下发生了微秒高温等离子体影响，合金非晶态，然后在等离子体微放电衰减后材料急剧冷却。与热空气氧化不同（结果是，钛合金表面层的硬度和脆性急剧增加），上述变化有助于提高处理后样品的机械强度和腐蚀机械强度。

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  • 来源
    《Surface Engineering》 |2009年第8期|565-569|共5页
  • 作者

    Sinebryukhov S.L.; Gnedenkov A.S.; Khrisanfova O.A.; Gnedenkov S.V.;

  • 作者单位

    Far Eastern Branch of Russian Academy of Sciences Institute of Chemistry prospect, 100-letiya Vladivostoka, 159 Vladivostok 690062, Russia, Email: sls@ich.dvo.ru;

    Far Eastern Branch of Russian Academy of Sciences Institute of Chemistry prospect, 100-letiya Vladivostoka, 159 Vladivostok 690062, Russia;

    Far Eastern Branch of Russian Academy of Sciences Institute of Chemistry prospect, 100-letiya Vladivostoka, 159 Vladivostok 690062, Russia;

    Far Eastern Branch of Russian Academy of Sciences Institute of Chemistry prospect, 100-letiya Vladivostoka, 159 Vladivostok 690062, Russia;

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