Formation Process of an LDHs Coating on Magnesium Alloy by a CO2 Pressurization Method

doi:10.3390/coatings9010047

IMR OpenIR

	Formation Process of an LDHs Coating on Magnesium Alloy by a CO2 Pressurization Method
	Zhang, Xiaochen 1,2; Wang, Jiaoxiang 3; Zhang, Chunyan 4; Liu, Bin 1; Jiang, Peng 5; Zhao, Yang 6; Buhe, Bateer 2; Zhang, Tao 6; Meng, Guozhe 1; Wang, Fuhui 6
通讯作者	Zhang, Tao(zhangtao@mail.neu.edu.cn)
	2019
发表期刊	COATINGS
ISSN	2079-6412
卷号	9 期号:1 页码:15
摘要	The formation process of LDHs (layered double hydroxides) coating on magnesium alloy by the CO2 pressurization method was studied. The micro-structure was observed by OM, SEM and GAXRD. The weighted gain curve, apparent activation energy, and CO2 solubility curve were all calculated by equations. The potentiodynamic polarization curve, hydrogen evolution data, and immersion were analyzed by an electrochemical method. The results show that the LDHs coating was formed layer-by-layer. The formation positions were initially on the alpha-Mg phase, and then on the beta-Mg17Al12 phase. It was found to be the most compact after 30 min. The LDHs coating began to appear to have severe cracks and holes over time. The formation process of the LDHs coating can be divided into three stages: a rapid growth stage (0-10 min), slow growth stage (10-20 min), and periodic growth stage (30 min, 1 h). The apparent activation energies in each of the three stages are 21.78, 31.86 and 34.92 kJ mol(-1), respectively. The LDHs coating has a compact micro-structure and better anti-corrosion at a pressure of 3 MPa, a temperature of 50 degrees C and a time of 30 min. The CO2 pressurization promotes a formation reaction rate and achieves a high formation efficiency and good formation stability under the condition of zero pollution.
关键词	magnesium alloy CO2 pressurization method LDHs coating formation process alpha-Mg phase beta-Mg(17)A(1)(2) phase micro-structure anti-corrosion property
资助者	National Program for the Young Top-notch Professionals ; National Natural Science Foundation of China ; Foundation of Young Scholars in HLJIT
DOI	10.3390/coatings9010047
收录类别	SCI
语种	英语
资助项目	National Program for the Young Top-notch Professionals ; National Natural Science Foundation of China[51531007] ; National Natural Science Foundation of China[51771050] ; National Natural Science Foundation of China[51705038] ; Foundation of Young Scholars in HLJIT[2014QJ12]
WOS研究方向	Materials Science
WOS类目	Materials Science, Coatings & Films
WOS记录号	WOS:000457786200047
出版者	MDPI
引用统计	被引频次：11[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/321006/131518
专题	中国科学院金属研究所
通讯作者	Zhang, Tao
作者单位	1.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China 2.Heilongjiang Inst Technol, Coll Mat Chem & Engn, Harbin 150050, Heilongjiang, Peoples R China 3.Avic Harbin Bearing Co LTD, Dept Res & Dev, Harbin 150000, Heilongjiang, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 5.Changzhou Univ, Sch Mech Engn, Changzhou 213164, Peoples R China 6.Northeastern Univ, Corros & Protect Div, Shenyang Natl Lab Mat Sci, Shenyang 110819, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaochen,Wang, Jiaoxiang,Zhang, Chunyan,et al. Formation Process of an LDHs Coating on Magnesium Alloy by a CO2 Pressurization Method[J]. COATINGS,2019,9(1):15.
APA	Zhang, Xiaochen.,Wang, Jiaoxiang.,Zhang, Chunyan.,Liu, Bin.,Jiang, Peng.,...&Wang, Fuhui.(2019).Formation Process of an LDHs Coating on Magnesium Alloy by a CO2 Pressurization Method.COATINGS,9(1),15.
MLA	Zhang, Xiaochen,et al."Formation Process of an LDHs Coating on Magnesium Alloy by a CO2 Pressurization Method".COATINGS 9.1(2019):15.