| CAI Wen-lan,SHI Hai-lan,WANG Zhen-xia,HE Zhi-yong,LIU Xiao-ping,LIN Nai-ming.Effect of Nano-ZrO2 Particles on Corrosive and Abrasive Performances of the Micro-arc Oxidized Ceramic Film on TC4 Alloy Surface[J],48(7):89-96 |
| Effect of Nano-ZrO2 Particles on Corrosive and Abrasive Performances of the Micro-arc Oxidized Ceramic Film on TC4 Alloy Surface |
| Received:October 18, 2018 Revised:July 20, 2019 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2019.07.009 |
| KeyWord:titanium alloy micro-arc oxidation ZrO2 corrosion resistance wear resistance wear mechanism |
| Author | Institution |
| CAI Wen-lan |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| SHI Hai-lan |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| WANG Zhen-xia |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| HE Zhi-yong |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| LIU Xiao-ping |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
| LIN Nai-ming |
School of Material Science and Engineering, Taiyuan University of Technology, Taiyuan , China |
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| Abstract: |
| The work aims to improve the wear and corrosion resistance of micro-arc oxidation ceramic coatings on the surface of TC4 and study the effects of ZrO2 on coating performance. In mixed electrolyte of Na2SiO3, Na3PO4 and NaOH with different concentrations, the micro-arc oxidation coating was fabricated on the surface of TC4 by micro-arc oxidation (MAO) technology to obtain the optimum electrolyte ration. The Nano-particles ZrO2 were added into electrolyte to fabricate composite coating. The effects of ZrO2 concentration on the morphology, phase structure, corrosion resistance and wear resistance of the film were analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD), electrochemical workstation and friction-abrasion testing machine. The friction and wear test was carried out under dry friction. The quantity and size of the micro-pores decreased with the increase of the ZrO2 concentration. The coatings were mainly composed of ZrO2, ZrTiO4, TiO2, Ti2O, Al2O3 and SiO2. The electrochemical tests in 0.9% NaCl solution showed that the self-corrosion potential of coatings improved with the increase of ZrO2 concentration. However when the ZrO2 concentration reached 12 g/L, the corrosion potential was decreased. The friction and wear experiments showed that the specific wear rate of ceramic coating without ZrO2 particles was 1.082×10-3 mm3/(N•m). When the content of ZrO2 was 9 g/L, the specific wear rate was 3.489×10-4 mm3/(N•m), accounting for 32.24% of that of coatings without ZrO2 particles. The addition of ZrO2 particles can effectively improve the corrosion resistance and abrasion resistance of the ceramic coating. In particular, the coating has the best corrosion resistance and wear resistance when the concentration of added particles is 9 g/L. |
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