Deposition, Characterization, and Corrosion Resistance of Nanocrystalline Bioactive Hydroxyapatite Ceramic Coating on New Ti-20Nb-10Zr-5Ta Alloy

被引：10

作者：

Popa, Monica ^{[1
]}

Vasilescu, Ecaterina ^{[1
]}

Drob, Paula ^{[1
]}

Popa, Mihai Vasile ^{[1
]}

Moreno, Jose Maria Calderon ^{[1
]}

Vasilescu, Cora ^{[1
]}

Drob, Silviu Iulian ^{[1
]}

机构：

[1] Romanian Acad, Inst Phys Chem Ilie Murgulescu, Bucharest 060021, Romania

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2012年 / 95卷 / 12期

关键词：

FORMING ABILITY; TITANIUM; APATITE; TI; PHOSPHATE; BEHAVIOR; BONE; TI-6AL-4V; GROWTH;

D O I：

10.1111/jace.12029

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new Ti-20Nb-10Zr-5Ta bioalloy with low Young's modulus (59 GPa) was coated with nanocrystalline hydroxyapatite (HA) ceramic layer by chemical method of soaking in a slightly supersaturated calcium and phosphate ions solution. The formation of HA was demonstrated using XRD, Raman microscopy and energy-dispersive X-ray spectroscopy; the coating morphology and microstructure were determined using SEM. The coating protective capacity and its long-term (2000 h) stability in simulated biofluids were revealed by the improvement of the all electrochemical parameters; also, HA ceramic coating reduced the alloy corrosion and ion release rates. After 2000 immersion hours in biofluids no compositional change occurs in the HA ceramic coating, only depositions from solution take place that change the coating morphology. Also, the in time increase of the coating stability and thickness (as a result of the new deposition from physiological solutions) indicates bioactivity.

引用

页码：3807 / 3814

页数：8

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