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Liu Xingya, Liu Qi. Effect of NaAlO2 Concentration on Microstructures and Tribological Properties of Micro-Arc Oxidized Ti600 Alloy[J]. CHINESE JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY, 2020, 40(1): 57-62. DOI: 10.13922/j.cnki.cjovst.2020.01.10
Citation: Liu Xingya, Liu Qi. Effect of NaAlO2 Concentration on Microstructures and Tribological Properties of Micro-Arc Oxidized Ti600 Alloy[J]. CHINESE JOURNAL OF VACUUM SCIENCE AND TECHNOLOGY, 2020, 40(1): 57-62. DOI: 10.13922/j.cnki.cjovst.2020.01.10
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Effect of NaAlO2 Concentration on Microstructures and Tribological Properties of Micro-Arc Oxidized Ti600 Alloy

  • 1. School of Mechanical and Electrical Engineering, Zhengzhou Vocational College of Information Technology, Zhengzhou 450046, China;

  • 2. School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

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  • Received Date: July 29, 2019
  • Available Online: September 11, 2023
    Graphical Abstract
    • Abstract
  • The surfaces of Ti600 alloy,an advanced aircraft-engine material,were modified by micro-arc oxidization in NaAlO2 solution.The influence of the NaAlO2-concentration on the microstructures and tribological behavior was investigated with XRD,energy dispersive spectroscopy and scanning electron microscopy.The preliminary results show that the NaAlO2-concentration had a major impact.For example,the oxidation voltage increased rapidly in the 1st three minutes to the arcing voltage,at which small sparks showed-up,then,it slowly increased.As the NaAlO2-concentration increased from 0.0 to 10 g/L,the arcing voltage and friction-coefficient decreased,the hardness and thickness increased,but the wear-rate changed in an increase-decrease manner; and the irregularly-shape porous oxides islands grew into continuous uniform coatings.Though the porous surface layer was rather loose,the compact interfacial layer exhibited strong adhesion.Formed at a NaAlO2-concentration of 12 g/L,the fairly loose/porous oxides surfaces displayed a rather low wear-resistance.
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    • References (20)
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