Hexagonal Boron Nitride Impregnated Silane Composite Coating for Corrosion Resistance of Magnesium Alloys for Temporary Bioimplant Applications

被引：26
作者：
Al-Saadi, Saad [1 ]
Banerjee, Parama Chakraborty [1 ,2 ]
Anisur, M. R. [1 ]
Raman, R. K. Singh [1 ,2 ]
机构：
[1] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia
[2] Monash Univ, Dept Chem Engn, Clayton, Vic 3800, Australia
来源：
METALS | 2017年 / 7卷 / 12期
关键词：
magnesium; hexagonal boron nitride; silane coating; Raman spectroscopy; electrochemical impedance spectroscopy; GELATIN-SILOXANE HYBRIDS; IN-VIVO CORROSION; THERMAL-CONDUCTIVITY; STAINLESS-STEEL; POLYMER COMPOSITES; BIODEGRADABLE MG; COUPLING AGENT; HANKS SOLUTION; VITRO; IMPLANT;
D O I：
10.3390/met7120518
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium and its alloys are attractive potential materials for construction of biodegradable temporary implant devices. However, their rapid degradation in human body fluid before the desired service life is reached necessitate the application of suitable coatings. To this end, WZ21 magnesium alloy surface was modified by hexagonal boron nitride (hBN)-impregnated silane coating. The coating was chemically characterised by Raman spectroscopy. Potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) of the coated alloy in Hanks' solution showed a five-fold improvement in the corrosion resistance of the alloy due to the composite coating. Post-corrosion analyses corroborated the electrochemical data and provided a mechanistic insight of the improvement provided by the composite coating.
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页数：13
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