In Vitro Degradation Behaviors of Manganese-Calcium Phosphate Coatings on an Mg-Ca-Zn Alloy

Su, Y, Su, Y, Zai, W, Li, G and Wen, C 2018, 'In Vitro Degradation Behaviors of Manganese-Calcium Phosphate Coatings on an Mg-Ca-Zn Alloy', Scanning, vol. 2018, pp. 1-9.


Document type: Journal Article
Collection: Journal Articles

Title In Vitro Degradation Behaviors of Manganese-Calcium Phosphate Coatings on an Mg-Ca-Zn Alloy
Author(s) Su, Y
Su, Y
Zai, W
Li, G
Wen, C
Year 2018
Journal name Scanning
Volume number 2018
Start page 1
End page 9
Total pages 9
Publisher John Wiley & Sons, Inc.
Abstract In order to decrease the degradation rate of magnesium (Mg) alloys for the potential orthopedic applications, manganese-calcium phosphate coatings were prepared on an Mg-Ca-Zn alloy in calcium phosphating solutions with different addition of Mn2+. Influence of Mn content on degradation behaviors of phosphate coatings in the simulated body fluid was investigated to obtain the optimum coating. With the increasing Mn addition, the corrosion resistance of the manganese-calcium phosphate coatings was gradually improved. The optimum coating prepared in solution containing 0.05 mol/L Mn2+ had a uniform and compact microstructure and was composed of MnHPO4 center dot 3H(2)O, CaHPO4 center dot 2H(2)O, and Ca-3 (PO4)(2). The electrochemical corrosion test in simulated body fluid revealed that polarization resistance of the optimum coating is 36273 Omega cm(2), which is about 11 times higher than that of phosphate coating without Mn addition. The optimum coating also showed the most stable surface structure and lowest hydrogen release in the immersion test in simulated body fluid.
Subject Biomaterials
Metals and Alloy Materials
DOI - identifier 10.1155/2018/6268579
Copyright notice Copyright © 2018 Yichang Su et al. Creative Commons Attribution License.
ISSN 1932-8745
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