AMORPHOUS PHASE AND MORPHOLOGICAL STRUCTURE OF HYDROXYAPATITE PLASMA COATINGS

被引：81

作者：

ZYMAN, Z

WENG, J

LIU, X

ZHANG, X

MA, Z

机构：

[1] SICHUAN UNIV,INST MAT SCI & TECHNOL,CHENGDU 610064,PEOPLES R CHINA

[2] KHARKOV AM GORKII STATE UNIV,FAC PHYS,DEPT GEN PHYS,KHARKOV,UKRAINE

来源：

BIOMATERIALS | 1993年 / 14卷 / 03期

关键词：

HYDROXYAPATITE; X-RAY DIFFRACTOMETRY; PLASMA SPRAYING;

D O I：

10.1016/0142-9612(93)90027-Y

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

It is shown that under standard conditions of plasma spraying hydroxyapatite powder reaches the substrate in the form of molten drops. On striking the surface, the molten drop splatters, cools rapidly and solidifies. Consequently, a pancake particle surrounded by tiny spherical or differently shaped particles is formed on the substrate. The solidified particles are partly crystallized. Besides the crystalline hydroxyapatite, they contain some supercooled molten hydroxyapatite, i.e. amorphous hydroxyapatite. Build-up of these particles during coating gives a porous pancake-globular structure. During a brief vacuum heating at 630-degrees-C, the amorphous phase is crystallized and completely crystalline hydroxyapatite coatings are obtained.

引用

页码：225 / 228

页数：4