Zinc-modified hydroxyapatite coatings obtained from parascholzite alkali conversion

被引:24
作者
Prado da Silva, M. H. [1 ]
Moura, F. N. [1 ]
da Rocha, D. Navarro [1 ]
Gobbo, L. A. [2 ]
Costa, A. M. [1 ]
Louro, L. H. L. [1 ]
机构
[1] IME, Rio De Janeiro, RJ, Brazil
[2] Spectris Brasil Inst Eletron Ltda, PANalytical, BR-04728000 Sao Paulo, Brazil
关键词
Parascholzite; Hydroxyapatite; Zinc apatite; Coating; STRUCTURAL-CHARACTERIZATION; BONE DEFECT; IN-VIVO; TITANIUM; SURFACE; METAL; OSSEOINTEGRATION; HYDROXYLAPATITE; ALLOY;
D O I
10.1016/j.surfcoat.2014.03.052
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this study, a novel method of zinc-substituted hydroxyapatite coating is presented. The technique consists of a two-step hydrothermal process. In the first step, the coatings consisted of parascholzite (JCPDS-01-086-2372), a mixture of parascholzite and monetite (JCPDS-01-071-1759) or parascholzite and brushite (JCPDS-72-0713), depending on the Zn concentration in the precursor solution. The second step consisted of an alkali conversion in a KOH solution. The resulting coating was identified as zinc-doped hydroxyapatite. Growing amounts of ZnO were identified for the coatings obtained with higher Zn content. Rietveld refinement revealed a slight decrease in the unit cell volume, due to zinc partial substitution, when compared to pure hydroxyapatite coatings. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:109 / 117
页数:9
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