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Effect of Thermal Oxidation Temperature on the Properties of Micro-Arc Oxidation Ceramic Coating on TC4 Alloy

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Abstract:

The effect of thermal oxidation temperature on the properties of MAO ceramic coating was investigated, The phase composition and surface morphology of composite oxidation coating were analyzed by XRD and SEM. The micro-hardness of composite oxidation coating were tested by micro hardness tester. The results shown that the composite oxidation coating consists of rutile, anatase Ti and HA. With the thermal oxidation temperature increasing, the micro-hardness of composite oxidation coatings were improved, but when the thermal oxidation temperature rose from 600 °C to 700 °C, the micro-hardness of coating dropped from 575 HV to 505 HV. With the thermal oxidation temperature increasing, the numbers of micro-porous on coating surface was decreased , and the composite oxidation coating became more density.

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Periodical:

Key Engineering Materials (Volume 697)

Pages:

623-626

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.697.623

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Online since:

July 2016

Authors:

Er Xin Ni, Ji Kang Yan*, Yun Feng Wu, Yuan Teng, Zhi Cao Duan, Gui Min Jiang, Yan Hua Sun, Gang Yang

Keywords:

MAO, TC4 Alloy, Thermal Oxidation

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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