一步电沉积Ca-P/CTS复合涂层的制备及其耐蚀性
One Step Electro-Deposited Ca-P/CTS Composite Coating and Its Corrosion Resistance
摘 要
通过一步电沉积法在AZ31镁合金基体表面上沉积钙磷/壳聚糖（Ca-P/CTS）复合涂层，通过共聚焦显微镜（CLSM）、扫描电镜（SEM）和红外光谱分析仪（FT-IR）对Ca-P/CTS复合涂层的形貌、结构以及成分进行分析，采用电化学测试研究了其耐蚀性。结果表明：Ca-P/CTS复合涂层能够有效提高AZ31镁合金基体的耐蚀性，当壳聚糖的质量浓度为0.2 g/L时，复合涂层的耐蚀性最好。
Ca-P/CTS复合涂层
傅里叶变换红外(FT-IR)光谱
腐蚀防护
electro-deposition
Ca-P/CTS composite coating
Fourier transform infrared (FT-IR) spectroscopy
corrosion protection
Abstract
One step electro-deposition was used for deposition of chitosan doped calcium phosphate composite coating (Ca-P/CTS) on the surface of AZ31 magnesium alloy. The morphology, structure and composition of the Ca-P/CTS composite coating were characterized by laser confocus microscopy (CLSM), scanning electron microscopy (SEM) and Fourier transform infrared (FT-IR) spectroscopy. The corrosion resistance of the coating was studied by electrochemical testing. The results show that the Ca-P/CTS composite coating could improve the corrosion resistance of AZ31 magnesium alloy efficiently. And the Ca-P/CTS composite coating had the best corrosion resistance when the concentration of chitosan was 0.2 g/L.
中图分类号 TG174.4 DOI 10.11973/fsyfh-201712003
所属栏目 试验研究
基金项目 上海市科委资助项目（17020500700）
收稿日期 2016/3/24
修改稿日期
网络出版日期
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引用该论文: ZHANG Congcong,CHENG Danhong,SHEN Xixun,XU Qunjie. One Step Electro-Deposited Ca-P/CTS Composite Coating and Its Corrosion Resistance[J]. Corrosion & Protection, 2017, 38(12): 914
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参考文献
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【2】胡骞,陈玉辉,刘静,等. AZ31镁合金表面钙磷涂层在Hank's液中的腐蚀行为[J]. 腐蚀与防护,2014,35(4):311-315.
【3】TAN L L,WANG Q,GENG F,et al. Preparation and characterization of Ca-P coating on AZ31 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China,2010,20(S2):648-654.
【4】TANG H,LI D Y,CHEN X P,et al. Formation of HA-containing coating on AZ31 magnesium alloy by micro-arc oxidation[J]. Surface Review and Letters,2013,20(3):1350026.
【5】LOPEZ-HEREDIA M A,WEISS P,LAYROLLE P. An electrodeposition method of calcium phosphate coatings on titanium alloy[J]. Journal of Materials Science:Materials in Medicine,2007,18(2):381-390.
【6】LU W,OU C W,ZHAN Z L,et al. Microstructure and in vitro corrosion properties of ZK60 magnesium alloy coated with calcium phosphate by electrodeposition at different temperatures[J]. International Journal of Electrochemical Science,2013,8(8):10746-10757.
【7】COSKUN M I,KARAHAN I H,YUCEL Y. Optimized electrodeposition concentrations for hydroxyapatite coatings on CoCrMo biomedical alloys by computational techniques[J]. Electrochimica Acta,2014,150:46-54.
【8】ZHANG J,DAI C,WEI J,et al. Calcium phosphate/chitosan composite coating:effect of different concentrations of Mg2+ in the m-SBF on its bioactivity[J]. Applied Surface Science,2013,280(9):256-262.
【9】ZHANG J,DAI C,WEI J,et al. Study on the bonding strength between calcium phosphate/chitosan composite coatings and a Mg alloy substrate[J]. Applied Surface Science,2012,261(8):276-286.
【10】ZHANG J,DAI C,WEI J,et al. Degradable behavior and bioactivity of micro-arc oxidized AZ91D Mg alloy with calcium phosphate/chitosan composite coating in m-SBF[J]. Colloids and Surfaces B:Biointerfaces,2013,111:179-187.
【11】SHAO Z,JIANG H,WANG S. Preparation of calcium phosphate/chitosan hybrid on the AZ91 magnesium alloy surface using chemical deposition method[J]. Rare Metal Materials & Engineering,2012,41(3):586-590.
【12】SONG G. Control of biodegradation of biocompatable magnesium alloys[J]. Corrosion Science,2007,49(4):1696-1701.
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