Synthesis and corrosion behavior of a hybrid bioceramic-biopolymer coating on biodegradable Mg alloy for orthopaedic implants

被引：30

作者：

Bakhsheshi-Rad, H. R. ^{[1
]}

Hamzah, E. ^{[1
]}

Ismail, A. F. ^{[2
]}

Sharer, Z. ^{[3
]}

Abdul-Kadir, M. R. ^{[1
]}

Daroonparvar, M. ^{[1
]}

Saud, Safaa N. ^{[1
]}

Medraj, M. ^{[4
,5
]}

机构：

[1] Univ Teknol Malaysia, Fac Mech Engn, Dept Mat Mfg & Ind Engn, Johor Baharu 81310, Johor, Malaysia

[2] Univ Teknol Malaysia, Adv Membrane Technol Res Ctr AMTEC, Johor Baharu 81310, Johor, Malaysia

[3] Univ Teknol Malaysia, Inst Oil & Gas, UTM MPRC, Johor Baharu 81310, Johor, Malaysia

[4] Concordia Univ, Dept Mech Engn, Montreal, PQ H3G 1M8, Canada

[5] Masdar Inst, Mech & Mat Engn Dept, Abu Dhabi, U Arab Emirates

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 648卷

关键词：

Magnesium; Polycaprolactone; Octacalcium phosphate; Biodegradable; Corrosion; OCTACALCIUM PHOSPHATE; MAGNESIUM ALLOY; COMPOSITE COATINGS; POLYCAPROLACTONE; MICROSTRUCTURE; HYDROXYAPATITE; PERFORMANCE; RESISTANCE;

D O I：

10.1016/j.jallcom.2015.07.075

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A composite coating composed of octacalcium phosphate (OCP) and hydroxyapatite (HA) as an underlayer and polycaprolactone (PCL) as an overlayer was fabricated on an Mg-1.2Ca-2Zn alloy via combination of chemical solution deposition and dip coating methods. The overlayer was composed of a pore network structure with thickness around 38 mu m but the underlayer consisted of plate-like crystals with inner dense layer (1.2 mu m) and an outer coarse layer (6 mu m). The corrosion current densities of Mg alloy significantly decreased after composite coating from 211.6 to 0.059 mu A/cm(2). Hence, the PCL/OCP/HA composite coating can effectively protect the Mg-1.2Ca-2Zn alloy when used as degradable orthopaedic implants. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：1067 / 1071

页数：5

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