Novel method of hydroxyapatite coating on titanium using chemical deposition

被引：1

作者：

Rohanizadeh, Ramin ^{[1
,2
]}

LeGeros, Racquel Z. ^{[2
]}

机构：

[1] Univ Sydney, Fac Pharm, Adv Drug Delivery Grp, Sydney, NSW 2006, Australia

[2] NYU, Coll Dent, Calcium Phosphate Res Grp, New York, NY 10010 USA

来源：

BIOCERAMICS, VOL 20, PTS 1 AND 2 | 2008年 / 361-363卷

关键词：

hydroxyapatite coating; titanium; implant; chemical deposition; calcium phosphates;

D O I：

10.4028/www.scientific.net/KEM.361-363.617

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：

The aim of this study was to deposit an adherent apatite coating on titanium substrate using a two-step chemical deposition method. First, titanium substrates were immersed in an acidic solution containing calcium and phosphate ions, resulting in the deposition of a monetite (CaHPO4) coating. Second, the monetite crystals were converted to apatite by hydrolysis in NaOH solution. Composition and morphology of the initial and final coatings were identified using X-ray diffraction (XRD), Scanning Electron Microscopy, and Energy Dispersive Spectroscopy (EDS). The final coating was porous and the apatite crystals were agglomerated and followed the outline of the large monetite crystals. The average tensile bond of the coating was 5.2 MPa and cohesion failures were observed more frequently than adhesion failures. The coating adhesion measured using scratch test was 13.1 N. In conclusion, this study showed the potential of a two-step chemical deposition method for depositing an adherent coating of apatite at low temperatures.

引用

页码：617 / +

页数：2

共 10 条

[1]

Brunette D. M., 2001, TITANIUM MED

[2] Addressing processing problems associated with plasma spraying of hydroxyapatite coatings [J].

Cheang, P ;

Khor, KA .

BIOMATERIALS, 1996, 17 (05) :537-544

[3] Influence of the interface layer deposited hydroxyapatite on the adhesion of pulsed laser coatings on titanium alloy [J].

Fernández-Pradas, JM ;

García-Cuenca, MV ;

Clèries, L ;

Sardin, G ;

Morenza, JL .

APPLIED SURFACE SCIENCE, 2002, 195 (1-4) :31-37

[4] Bond strength improvement of hydroxyapatite/titanium composite coating by partial nitriding during RF-thermal plasma spraying [J].

Inagaki, M ;

Yokogawa, Y ;

Kameyama, I .

SURFACE & COATINGS TECHNOLOGY, 2003, 173 (01) :1-8

[5] The process of electrochemical deposited hydroxyapatite coatings on biomedical titanium at room temperature [J].

Kuo, MC ;

Yen, SK .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2002, 20 (1-2) :153-160

[6]

Legeros Racquel Z., 1993, Clinical Materials, V14, P65, DOI 10.1016/0267-6605(93)90049-D

[7]

LeGeros RZ., 1971, Adv. X-Ray Anal, V14, P57

[8]

Ohgushi H, 1999, J BIOMED MATER RES, V48, P913, DOI 10.1002/(SICI)1097-4636(1999)48:6<913::AID-JBM22>3.0.CO

[9]

2-0

[10] A functionally graded titanium/hydroxyapatite film obtained by sputtering [J].

Ozeki, K ;

Yuhta, T ;

Fukui, Y ;

Aoki, H ;

Nishimura, I .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 2002, 13 (03) :253-258

← 1 →