Synthesis and characterization of magnesium phytic acid/apatite composite coating on AZ31 Mg alloy by microwave assisted treatment

被引：50

作者：

Jiang, Song ^{[1
]}

Cai, Shu ^{[1
]}

Zhang, Feiyang ^{[1
]}

Xu, Peng ^{[2
]}

Ling, Rui ^{[1
]}

Li, Yue ^{[1
]}

Jiang, Yangyang ^{[1
]}

Xu, Guohua ^{[2
]}

机构：

[1] Tianjin Univ, Minist Educ, Key Lab Adv Ceram & Machining Technol, Tianjin 300072, Peoples R China

[2] Changzheng Hosp, Spine Surg Ctr, Dept Orthoped Surg, Shanghai 200003, Peoples R China

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2018年 / 91卷

基金：

中国国家自然科学基金;

关键词：

Microwave assisted treatment; Composite coating; Magnesium alloy; Corrosion resistance; ENHANCED CORROSION-RESISTANCE; ACID CONVERSION COATINGS; IN-VITRO; BIOMEDICAL APPLICATIONS; COATED MAGNESIUM; BIOACTIVITY; DEPOSITION; MICROSTRUCTURE; OXIDATION; IMPLANTS;

D O I：

10.1016/j.msec.2018.05.041

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

082905 [生物质能源与材料]; 100103 [病原生物学];

摘要：

To improve the corrosion resistance and bioactivity of AZ31 magnesium alloy, a crack-free magnesium phytic acid/apatite composite coating was synthesized on AZ31 substrate via chemical conversion deposition and followed a rapid microwave assisted treatment. The influences of pH values of the microwave solution on the morphology, composition and corrosion resistance properties of the composite coating were investigated. An apatite coating with bilayer structure was completely covered the magnesium phytic acid conversion coating after microwave radiation in the solution of pH 6.5, which reached the thickness of similar to 7.0 mu m. During the electrochemical and immersion tests in simulated body fluid (SBF), the samples with composite coating exhibited a remarkably improved corrosion resistance, slower degradation rate and rapid inducing of Ca-P apatite deposition, suggesting that the composite coating could provide a long-time protection for substrates and promote the bioactivity of AZ31 magnesium alloys. Moreover, after 5 days of incubation, the composite coating showed non-cytotoxicity, good osteoblast adhesion and proliferation.

引用

页码：218 / 227

页数：10

共 43 条

[1]

Deposition of nanostructured fluorine-doped hydroxyapatite-polycaprolactone duplex coating to enhance the mechanical properties and corrosion resistance of Mg alloy for biomedical applications [J].