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The effects of pulse electrodeposition parameters on morphology and formation of dual-layer Si-doped calcium phosphate coating on AZ31 alloy
P. Wan; X. Qiu; L. L. Tan; X. M. Fan; K. Yang
2015
Source PublicationCeramics International
ISSN0272-8842
Volume41Issue:1Pages:787-796
AbstractControlling the corrosion rate of magnesium alloys in vivo to match the bone repair is crucially important for application as biodegradable orthopedic implants. To solve this challenge, a Si-doped Ca-P coating with a novel dual-layer structure was deposited on AZ31 alloy substrate by pulse electrodeposition. The morphology, composition and formation of dual-layer coating were believed to be determined by pulse electrodeposition parameters, thus the deposition time, temperature, duty cycle, pH value of the electrolyte and the standing duration of mixed electrolyte were regulated to seek possible influences and mechanism on the coating formation. Weight gain and pH monitoring tests were also used to evaluate the performance of coating under the varied parameters. The results indicated that deposition temperature and time remarkably influenced the morphology, homogeneity and crystallinity of Ca-P coating. A uniform and compact coating with better degradation performance was obtained at 60 degrees C with deposition time of 40 min. The shorter standing duration of the electrolyte lead to an incomplete coating and uneven distribution of Si contents. The two coupled deposition models contributed to this dual-layer structure of Si-doped Ca-P coating and possible formation mechanism was proposed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
description.department[wan, peng ; qiu, xun ; tan, lili ; yang, ke] chinese acad sci, inst met res, shenyang 110016, peoples r china. [qiu, xun ; fan, xinmin] nanjing univ sci & technol, dept mat sci & engn, nanjing 210094, jiangsu, peoples r china. ; wan, p (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; pwan@imr.ac.cn
KeywordPulse Electrodeposition Dual-layer Structure Silicon Calcium Phosphate Coating Az31 Magnesium Alloy Simulated Body-fluid In-vitro Substituted Hydroxyapatite Biomedical Applications Magnesium Alloys Silicon Bone Titanium Requirement Cartilage
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73395
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
P. Wan,X. Qiu,L. L. Tan,et al. The effects of pulse electrodeposition parameters on morphology and formation of dual-layer Si-doped calcium phosphate coating on AZ31 alloy[J]. Ceramics International,2015,41(1):787-796.
APA P. Wan,X. Qiu,L. L. Tan,X. M. Fan,&K. Yang.(2015).The effects of pulse electrodeposition parameters on morphology and formation of dual-layer Si-doped calcium phosphate coating on AZ31 alloy.Ceramics International,41(1),787-796.
MLA P. Wan,et al."The effects of pulse electrodeposition parameters on morphology and formation of dual-layer Si-doped calcium phosphate coating on AZ31 alloy".Ceramics International 41.1(2015):787-796.
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