Morphological studies on the development of chemical conversion coating on surface of Mg-4Zn alloy and its corrosion and bio mineralisation behaviour in simulated body fluid

被引：47
作者：
Prabhu, Deepa B. [1 ,2 ]
Gopalakrishnan, P. [2 ]
Ravi, K. R. [3 ]
机构：
[1] PSG Inst Adv Studies, Struct Nanomat Lab, Coimbatore 641004, Tamil Nadu, India
[2] PSG Coll Technol, Dept Met Engn, Coimbatore 641004, Tamil Nadu, India
[3] Indian Inst Technol, Dept Met & Mat Engn, Jodhpur 342011, Rajasthan, India
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 812卷
关键词：
Metals and alloys; Coating materials; Corrosion; Scanning electron microscopy; IN-VITRO DEGRADATION; BIODEGRADABLE MG-ZN; MAGNESIUM ALLOYS; MECHANICAL-PROPERTIES; NESQUEHONITE MGCO3-CENTER-DOT-3H(2)O; HEAT-TREATMENT; HIGH-STRENGTH; RARE-EARTH; MICROSTRUCTURE; CA;
D O I：
10.1016/j.jallcom.2019.152146
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：
Nucleation and growth of chemical conversion coating on Mg-4Zn alloy prepared by immersion in saturated NaHCO3 at ambient temperature and its corrosion behaviour in simulated body fluid (SBF) is investigated in this paper. Compact dense coating obtained up on 24 h of immersion at ambient temperature is found to provide complete coverage of the surface and a high initial corrosion resistance in SBF. With sustained exposure to SBF, the coating dissolves and slowly cracks to expose the substrate to the corrosion medium. The 24 h coated sample shows high levels of bio mineralisation, with flower shaped crystals of phosphates of Ca and Mg on the surface. The combined effects of slow first hydrogen evolution rate and precipitation of phosphates, and similarities to the carbonate coating developed in vivo makes the conversion coating discussed in this paper a suitable choice for Mg alloys for temporary bio implant applications. (C) 2019 Elsevier B.V. All rights reserved.
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页数：16
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共 76 条
[21]   Use of Sodium Bicarbonate as a Chloride-Free Aqueous Electrolyte to Explore Film Formation and the Negative Difference Effect on Pure Magnesium [J].
Gore, Poorwa ;
Raja, V. S. ;
Birbilis, Nick .
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2018, 165 (13) :C849-C859
[22]   Protective coatings on magnesium and its alloys - a critical review [J].
Gray, JE ;
Luan, B .
JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 336 (1-2) :88-113
[23]   A study on alkaline heat treated Mg-Ca alloy for the control of the biocorrosion rate [J].
Gu, X. N. ;
Zheng, W. ;
Cheng, Y. ;
Zheng, Y. F. .
ACTA BIOMATERIALIA, 2009, 5 (07) :2790-2799
[24]   Precipitation in the Mg-carbonate system -: effects of temperature and CO2 pressure [J].
Haenchen, Markus ;
Prigiobbe, Valentina ;
Baciocchi, Renato ;
Mazzotti, Marco .
CHEMICAL ENGINEERING SCIENCE, 2008, 63 (04) :1012-1028
[25]   Biocompatibility of bio-Mg-Zn alloy within bone with heart, liver, kidney and spleen [J].
He YaoHua ;
Tao HaiRong ;
Zhang Yan ;
Jiang Yao ;
Zhang ShaoXiang ;
Zhao ChangLi ;
Li JiaNan ;
Zhang BeiLei ;
Song Yang ;
Zhang XiaoNong .
CHINESE SCIENCE BULLETIN, 2009, 54 (03) :484-491
[26]   Biomedical coatings on magnesium alloys - A review [J].
Hornberger, H. ;
Virtanen, S. ;
Boccaccini, A. R. .
ACTA BIOMATERIALIA, 2012, 8 (07) :2442-2455
[27]   Control of magnesium corrosion and biocompatibility with biomimetic coatings [J].
Keim, Sigrid ;
Brunner, Johannes G. ;
Fabry, Ben ;
Virtanen, Sannakaisa .
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS, 2011, 96B (01) :84-90
[28]   A survey of bio-corrosion rates of magnesium alloys [J].
Kirkland, N. T. ;
Lespagnol, J. ;
Birbilis, N. ;
Staiger, M. P. .
CORROSION SCIENCE, 2010, 52 (02) :287-291
[29]   Influence of zinc on the microstructure, mechanical properties and in vitro corrosion behavior of magnesium-zinc binary alloys [J].
Koc, Erkan ;
Kannan, M. Bobby ;
Unal, Mehmet ;
Candan, Ercan .
JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 648 :291-296
[30]   How useful is SBF in predicting in vivo bone bioactivity? [J].
Kokubo, T ;
Takadama, H .
BIOMATERIALS, 2006, 27 (15) :2907-2915
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