期刊
CERAMICS INTERNATIONAL
卷 46, 期 10, 页码 17112-17116出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2020.03.179
关键词
Alumina; Aluminum nitride; Microstructure; Performance
资金
- Key research and development program of shaanxi [2018GY-127]
The present work is focused on the preparation and performance of micro arc oxidation (MAO) ceramic coating doped with aluminium nitride (AlN) on 6061 Al alloy. The results reveal that AlN-doped ceramic coatings could be prepared by plasma discharge with AlN powder or urea added into the electrolyte. Although AlN-doped MAO ceramic coatings present more distinct porous features than those without AlN, they achieved excellent thermal conductivity and insulation performance due to the physical properties of AlN. Compared with the uncoated Al substrate, MAO coatings with or without AlN doping all exhibited an improved wear resistance. AlN-doped MAO coating could considerably inhibit the formation of a transfer layer. This alumina ceramic coating doped with AlN is anticipated to be applied in the field of light-emitting diode (LED) aluminum substrate.
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