Potentiostatic preparation and in vitro characterization of functional hazenite conversion coatings on AZ31 magnesium alloy

doi:10.1016/j.surfcoat.2023.130215

IMR OpenIR

	Potentiostatic preparation and in vitro characterization of functional hazenite conversion coatings on AZ31 magnesium alloy
	Wu, Li-Ping
通讯作者	Wu, Li-Ping(wuliping2008@126.com)
	2024-01-30
发表期刊	SURFACE & COATINGS TECHNOLOGY
ISSN	0257-8972
卷号	476 页码:15
摘要	A functional hazenite coating was deposited on AZ31 Mg alloy by polarization at -0.8 V in a deaerated phosphate solution containing 0.1 M K2HPO4 and 0.1 M Na2HPO4 with pH 9. The growth process of the coating was determined by analyzing its morphological and composition evolution. The roughness, hydrophilicity, long-term protectiveness, bioactivity and bio-compatibility of the coating were characterized. The stress corrosion cracking (SCC) susceptibility of the coated AZ31 Mg alloy was also investigated. The results showed that the coating consisted of crystallized Mg(OH)2, MgHPO4.3H2O, KMgPO4.6H2O and KNaMg2(PO4)2.14H2O. The latter three compounds were transformed into hydroxyapatite, improving the bioactivity of AZ31 Mg alloy. The coating increased the roughness and hydrophilicity and significantly stimulated the proliferation of rabbit bone marrow stem cells, enhancing the biocompatibility of AZ31 Mg alloy. Additionally, the coating reduced the degradation rate of AZ31 Mg alloy by more than two orders of magnitude and the hydrogen volume by 50.9 % and showed good long-term protectiveness. Moreover, the coating decreased the SCC susceptibility indexes IUTS and I epsilon of AZ31 Mg alloy by 41.9 % and 44.9 %, respectively.
关键词	Magnesium Stress corrosion cracking Degradation Coating
资助者	National Natural Science Foundation of China
DOI	10.1016/j.surfcoat.2023.130215
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51701221]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Coatings & Films ; Physics, Applied
WOS记录号	WOS:001125046900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/182852
专题	中国科学院金属研究所
通讯作者	Wu, Li-Ping
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Li-Ping. Potentiostatic preparation and in vitro characterization of functional hazenite conversion coatings on AZ31 magnesium alloy[J]. SURFACE & COATINGS TECHNOLOGY,2024,476:15.
APA	Wu, Li-Ping.(2024).Potentiostatic preparation and in vitro characterization of functional hazenite conversion coatings on AZ31 magnesium alloy.SURFACE & COATINGS TECHNOLOGY,476,15.
MLA	Wu, Li-Ping."Potentiostatic preparation and in vitro characterization of functional hazenite conversion coatings on AZ31 magnesium alloy".SURFACE & COATINGS TECHNOLOGY 476(2024):15.