Growth mechanism of hydroxyapatite-coatings formed on pure magnesium and corrosion behavior of the coated magnesium

被引：148

作者：

Tomozawa, Masanari ^{[1
]}

Hiromoto, Sachiko ^{[1
,2
]}

机构：

[1] Natl Inst Mat Sci, Ctr Biomat, Tsukuba, Ibaraki 3050044, Japan

[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

APPLIED SURFACE SCIENCE | 2011年 / 257卷 / 19期

关键词：

Magnesium; Hydroxyapatite; Hydrothermal treatment; Corrosion resistant coatings; Bioabsorbable metals; CALCIUM-PHOSPHATE COATINGS; DEGRADATION BEHAVIOR; ALLOY; MICROSTRUCTURE; SCAFFOLDS;

D O I：

10.1016/j.apsusc.2011.04.087

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Hydroxyapatite (HAp) coatings were uniformly formed on pure Mg by a hydrothermal treatment using a C10H12N2O8Na2Ca (Ca-EDTA) solution. The growth mechanism of the HAp coating was investigated with XRD, SEM and TEM. At the initial stage, dome-shape HAp precipitates were formed on the Mg. Subsequently, the precipitates grew and the coating became a dual-layer consisting of an inner dense HAp layer and outer course layer consisting of rod-like HAp crystals. The protectiveness of the coatings with different treatment times was investigated by a polarization test in a 3.5 wt.% NaCl solution. The corrosion current density decreased with the growth of the HAp coating. (C) 2011 Elsevier B. V. All rights reserved.

引用

页码：8253 / 8257

页数：5

共 32 条

[1]

[Anonymous], METAL IONS BIOL SYST

[2]

MAGNESIUM INFLUENCE ON HYDROXYAPATITE CRYSTALLIZATION [J].

BIGI, A ;

FALINI, G ;

FORESTI, E ;

GAZZANO, M ;

RIPAMONTI, A ;

ROVERI, N .

JOURNAL OF INORGANIC BIOCHEMISTRY, 1993, 49 (01) :69-78

[3]

Carbonate and magnesium interactive effect on calcium phosphate precipitation [J].

Cao, Xinde ;

Harris, Willie .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (02) :436-442

[4]

Synthesis and structure of magnesium-substituted hydroxyapatite [J].

Fadeev, IV ;

Shvorneva, LI ;

Barinov, SM ;

Orlovskii, VP .

INORGANIC MATERIALS, 2003, 39 (09) :947-950

[5]

The mechanism of deposition of calcium phosphate coatings from solution onto magnesium alloy AZ31 [J].

Gray-Munro, J. E. ;

Strong, M. .

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A, 2009, 90A (02) :339-350

[6]

Biocorrosion of magnesium alloys: a new principle in cardiovascular implant technology? [J].

Heublein, B ;

Rohde, R ;

Kaese, V ;

Niemeyer, M ;

Hartung, W ;

Haverich, A .

HEART, 2003, 89 (06) :651-656

[7]

Hiromoto S., 2009, P 18 INT C PROC FABR, V3, P1159

[8]

Corrosion Behavior of Magnesium with Hydroxyapatite Coatings Formed by Hydrothermal Treatment [J].

Hiromoto, Sachiko ;

Tomozawa, Masanari .

MATERIALS TRANSACTIONS, 2010, 51 (11) :2080-2087

[9]

High corrosion resistance of magnesium coated with hydroxyapatite directly synthesized in an aqueous solution [J].

Hiromoto, Sachiko ;

Yamamoto, Akiko .

ELECTROCHIMICA ACTA, 2009, 54 (27) :7085-7093

[10]

*JAP I LIGHT MET, 2000, HDB ADV MAGN TECHN

← 1 2 3 4 →