Influence of zinc incorporation on microstructure of hydroxyapatite to characterize the effect of pH and calcination temperatures

被引：24

作者：

Esfahani, H. ^{[1
]}

Salahi, E. ^{[1
]}

Tayebifard, A. ^{[1
]}

Rahimipour, M. R. ^{[1
]}

Keyanpour-Rad, M. ^{[1
]}

机构：

[1] MERC, Tehran, Iran

来源：

JOURNAL OF ASIAN CERAMIC SOCIETIES | 2014年 / 2卷 / 03期

关键词：

Calcination; Hydroxyapatite; pH; Tri calcium phosphate; Zinc incorporation;

D O I：

10.1016/j.jascer.2014.05.001

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

This work was focused to study the existence of Zn2* in structure, chemical composition as well as particle and crystallite size of hydroxyapatite (HAp) to characterize the effect of pH of the solution and calcination temperature. Non-stoichiometric HAp (nHAp) powders containing 4 at.% zinc fraction were synthesized via solution -precipitation method. In order to characterize the effect of pH (values: 9 and 10.5) and two calcination temperatures (550 and 1000 degrees C) on chemical composition, molecule internal bonds, particle and crystallite size of the synthesized powders, XRD, EDS, FTIR and SEM techniques were utilized. The results showed that zinc cations could be incorporated in the HAp atomic structure to form low crystalline single phase of nHAP. The pH adjustment to 10.5 caused the formation of powders with smaller particle and crystallite sizes. The results also indicated that calcination temperature up to 1000 degrees C caused decomposition of zinc doped nHAp to beta-tri calcium phosphate and tri zinc calcium phosphate phases which are used to control the speed of biodegradation. (C) 2014 The Ceramic Society of Japan and the Korean Ceramic Society. Production and hosting by Elsevier B.V. All rights reserved.

引用

页码：248 / 252

页数：5

共 17 条

[1]

Animal trial on zinc doped hydroxyapatite: A case study [J].