[1]刘斌,林萍华,沈雁,等.在多孔钙磷陶瓷表面浸涂溶胶制备HA涂层[J].东南大学学报(自然科学版),2007,37(1):113-117.[doi:10.3969/j.issn.1001-0505.2007.01.024]
 Liu Bin,Lin Pinghua,Shen Yan,et al.Synthesis of hydroxyapatite coating on porous calcium phosphate ceramic by dipping HA sol[J].Journal of Southeast University (Natural Science Edition),2007,37(1):113-117.[doi:10.3969/j.issn.1001-0505.2007.01.024]
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在多孔钙磷陶瓷表面浸涂溶胶制备HA涂层()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第1期
页码:
113-117
栏目:
化学化工
出版日期:
2007-01-20

文章信息/Info

Title:
Synthesis of hydroxyapatite coating on porous calcium phosphate ceramic by dipping HA sol
作者:
刘斌1 林萍华12 沈雁1 董寅生1
1 东南大学材料科学与工程学院, 南京 211189; 2 河海大学材料科学与工程系, 南京 210098
Author(s):
Liu Bin1 Lin Pinghua12 Shen Yan1 Dong Yinsheng1
1 School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2 Department of Materials Science and Engineering, Hohai University, Nanjing 210098, China
关键词:
多孔钙磷陶瓷 溶胶 HA涂层 表面生物活性
Keywords:
porous calcium phosphate ceramic sol HA coating surface bioactivity
分类号:
TQ174;R318
DOI:
10.3969/j.issn.1001-0505.2007.01.024
摘要:
采用有机泡沫浸渍工艺制备了具有高孔隙率的多孔钙磷陶瓷,并以此为基体,采用浸涂溶胶的方法在多孔陶瓷网架结构表面成功制备了HA涂层.扫描电镜(SEM)观察样品的孔隙和表面形貌显示,涂层均匀涂敷在多孔陶瓷孔壁表面,形成的涂层中存在着大量由于水分蒸发形成的缩孔.涂层处理对样品的大孔结构没有明显影响,样品仍保持了较高的孔隙率(82.3%±2.8%).X射线衍射(XRD)分析表明,涂层由较纯的HA组成.经不同温度处理后,HA涂层呈现了不同的结晶状态.500 ℃处理后得到了结晶程度较低的HA涂层,这种涂层有利于提高多孔陶瓷的表面生物活性.对涂层与基体的界面分析后可得,两者之间为紧密的机械锚合.
Abstract:
Hydroxyaptite(HA)Ca10(PO4)6(OH)2 was successfully coated on a highly porous substrate of calcium phosphate ceramic fabricated by the technique of foam impregnation. The pore structure and surface morphology of the samples were characterized by scanning electron microscopy(SEM). The results indicate that the coating is microstructurally uniform on the pore walls of porous ceramic, and there are a large amount of micropores formed in the coating due to the evaporating of water and solvent. The coating has no remarkable effect on the macropore structure of samples, so the samples after coating maintain a high porosity(82.3%±2.8%). X ray diffraction indicates that the coating is essentially composed of pure HA. Moreover, the HA coating sintered at different temperature has different degree of crystallinity. The HA coating treated at 500 ℃ shows a low degree of crystallinity, which would improve the surface bioactivity of the porous ceramics. The analysis of the interface shows that the coating adheres on substrate compactly by mechanical mode.

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备注/Memo

备注/Memo:
基金项目: 江苏省高新技术研究资助项目(BG2001033)、日本板梢子公司海外基金资助项目.
作者简介: 刘斌(1977—),男,博士生; 董寅生(联系人),男,博士,教授, dongys@seu.edu.cn.
更新日期/Last Update: 2007-01-20