Modification of electrophoretically deposited nano-hydroxyapatite coatings by wire brushing on Ti-6Al-4V substrates

被引：43

作者：

Farnoush, Hamidreza ^{[1
]}

Mohandesi, Jamshid Aghazadeh ^{[1
]}

Fatmehsari, Davoud Haghshenas ^{[1
]}

Moztarzadeh, Fathollah ^{[2
]}

机构：

[1] Amirkabir Univ Technol, Dept Min & Met Engn, Tehran, Iran

[2] Amirkabir Univ Technol, Dept Biomed Engn, Tehran, Iran

来源：

CERAMICS INTERNATIONAL | 2012年 / 38卷 / 06期

关键词：

Powders: chemical preparation; Surfaces; Strength; Apatite; Biomedical applications; Electrophoretic deposition; BEHAVIOR; ALLOYS;

D O I：

10.1016/j.ceramint.2012.02.079

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

081705 [工业催化]; 082905 [生物质能源与材料];

摘要：

In the present study, after successful synthesis of nano-HA powders by chemical precipitation method, wire-brushing (WB) treatment was effectively employed on Ti-6Al-4V substrates for the modification of electrophoretically deposited nano-hydroxyapatite coatings. The precipitated nano-HA particles were characterized by XRD, FT-IR, and DLS analyses. The morphology and particle size of synthesized nano-HA particles was observed by FE-SEM. The Ti-6Al-4V plates were initially wire brushed at different times and rotational speeds. Microhardness profile and AFM analysis of substrates were then studied. It was found that WB treatment at 16,000 rpm for 60 s leads to a maximum enhancement in the hardness and roughness of surface. Then, the electrophoretic deposition of nano-HA particles was carried out at constant voltage of 30 V and after 60 s. The results of adhesion test and potentiodynamic polarization measurements showed that WB treatment on Ti-6Al-4V substrates could efficiently increase the bonding strength between coating and substrate as well as corrosion resistance. (C) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：4885 / 4893

页数：9

共 40 条

[1]

Hydroxyapatite coating on titanium substrate by electrophoretic deposition method: Effects of titanium dioxide inner layer on adhesion strength and hydroxyapatite decomposition [J].