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纯钛表面CNTs掺杂微弧氧化复合陶瓷膜性能研究
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中国石油大学华东 机电工程学院材料科学与工程系

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中图分类号:

TB31

基金项目:

山东省自然科学基金资助项目(ZR2017LEM004);中央高校基本科研业务费专项资金资助(18CX02091A)


Study on the performance of ceramic coatings via micro-arc oxidation with doping CNTs
Author:
Affiliation:

Department of Materials Science and Engineering,China University of Petroleum

Fund Project:

Natural Science Foundation of Shandong Province of China(No. ZR2017LEM004);Fundamental Research Funds for the Central Universities (No. 18CX02091A)

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    摘要:

    The composite ceramic coatings with excellent performance was prepared by micro-arc oxidation with doping CNTs. Influence of CNTs doping method on microstructure, phase composition, wear resistance, corrosion resistance, porosity and pore uniformity were investigated. The results show that the decrease of length to diameter ratio, the change from super hydrophobicity to hydrophobicity and the introduction of oxygen-containing functional groups after modified, increased the dispersion of CNTs in solvents. The addition of CNTs made the coatings smoother and more dense. The coatings were composed of rutile TiO2, anatase TiO2 and CNTs. The addition of CNTs helped to improve the wear resistance and corrosion resistance of coatings. The A-CNTs/MAO coating was not completely damaged after friction test for 20 minutes, showing the best wear resistance. The self-corrosion potential of A-CNTs/MAO coating was -67.61mV, the corrosion current density was 7.43×10-7 A?cm2, and the polarization resistance was 6.84×104 Ω?cm2, showing the best corrosion resistance.

    Abstract:

    The composite ceramic coatings with excellent performance was prepared by micro-arc oxidation with doping CNTs. Influence of CNTs doping method on microstructure, phase composition, wear resistance, corrosion resistance, porosity and pore uniformity were investigated. The results show that the decrease of length to diameter ratio, the change from super hydrophobicity to hydrophobicity and the introduction of oxygen-containing functional groups after modified, increased the dispersion of CNTs in solvents. The addition of CNTs made the coatings smoother and more dense. The coatings were composed of rutile TiO2, anatase TiO2 and CNTs. The addition of CNTs helped to improve the wear resistance and corrosion resistance of coatings. The A-CNTs/MAO coating was not completely damaged after friction test for 20 minutes, showing the best wear resistance. The self-corrosion potential of A-CNTs/MAO coating was -67.61mV, the corrosion current density was 7.43×10-7 A?cm2, and the polarization resistance was 6.84×104 Ω?cm2, showing the best corrosion resistance.

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于思荣,王先,赵严,刘恩洋,熊伟.纯钛表面CNTs掺杂微弧氧化复合陶瓷膜性能研究[J].稀有金属材料与工程,2019,48(11):3664~3671.[Yu Sirong, Wang Xian, Zhao Yan, Liu Enyang, Xiong Wei. Study on the performance of ceramic coatings via micro-arc oxidation with doping CNTs[J]. Rare Metal Materials and Engineering,2019,48(11):3664~3671.]
DOI:10.12442/j. issn.1002-185X.20180766

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  • 收稿日期:2018-07-16
  • 最后修改日期:2018-09-28
  • 录用日期:2018-10-08
  • 在线发布日期: 2019-12-10
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