期刊
SURFACE ENGINEERING
卷 36, 期 2, 页码 167-174出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02670844.2019.1627016
关键词
Aluminium alloy; coating; corrosion protection; Zeolite; micro arc oxidation; hydrothermal synthesis
资金
- National Key Research and Development Program of China [2016YFB0300901]
For micro-arc oxidation (MAO) coating on aluminium alloys, the corrosion medium can permeate through the microvoids and cracks in it to decrease its corrosion resistance. In this study, a method of two-steps hydrothermal synthesis has been developed to prepare a composite coating by the synthesis of zeolite film on MAO-coated Al alloy substrate. The zeolite crystals are well intergrown into a continuous film and the micro defects in the MAO coating are sealed. This kind of composite coating can provide excellent long-term corrosion protection to Al alloy substrate. The effect of the first-step hydrothermal synthesis on the microstructure of the MAO coating and zeolite film has been studied.
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