Influence of Electrolytes on the Microstructure of Microarc Oxidation Coatings on Ti-6Al-4V Alloy

材料科学技术（英文）, 2002, 18(1): 37-39.

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1.Key Laboratory for Radiation Beam Technology and Materials Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

2.Key Laboratory for Radiation Beam Technology and Materials Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

3.Key Laboratory for Radiation Beam Technology and Materials Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

4.Key Laboratory for Radiation Beam Technology and Materials Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

5.Key Laboratory for Radiation Beam Technology and Materials Modification, Institute of Low Energy Nuclear Physics, Beijing Normal University, Beijing 100875, China

基金项目: 国家高技术研究发展计划(863计划)(715-011-020) Beijing New-Star Program for Science and Technology(9558102500) 国家自然科学基金(59801003)

Influence of Electrolytes on the Microstructure of Microarc Oxidation Coatings on Ti-6Al-4V Alloy

Keywords： Microarc oxidation

Dense ceramic oxide coatings of about 50 μm may be prepared on Ti-6Al-4V alloy surface by alternating-currentmicroarc oxidation in aluminate and silicate solutions, respectively. Their phase constituent and microstructure werecharacterized using X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that theelectrolytic ions have incorporated into the interior of the coatings. The coating formed in aluminate solution iscomposed of the rutile TiO2 and TiAl2O5 phases rather than the rutile, anatase and amorphous SiO2 phases for thecoating formed in silicate solution. However, TiAl2O5 content in the outer layer of the two coatings is much higherthan in the inner layer. It is suggested that all these oxides may result from a rapid solidification of the moltencoating in the microarc discharge zone.

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材料期刊网

Influence of Electrolytes on the Microstructure of Microarc Oxidation Coatings on Ti-6Al-4V Alloy

参考文献