Colloidal-sol gel derived rough Mn-TCP/FHA coatings with high adhesion strength

任常宝; 林军; 程逵; 翁文剑; 苗顺东; 刘斯倩

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Colloidal-sol gel derived rough Mn-TCP/FHA coatings with high adhesion strength

首发时间：2009-01-04

Ren Changbao ¹ Lin Jun ² Cheng Kui ¹ Weng Wenjian ¹ Miao Shundong ¹ Liu Siqian ¹

1、Dept. Mater. Sci & Eng. ZJU
2、The 1st Affiliate Hospital, ZJU

Abstract：In this work, composite calcium phosphate coatings containing Manganese ions are prepared through a colloidal-sol gel method. Mn containing 僴円-tricalcium phosphate powders are embedded in a fluoridated hydroxyapatite (FHA) matrix to form Mn-TCP-FHA composites via colloidal-sol gel method. This composite layer is deposited on top of a FHA layer to form a Mn-TCP-FHA/FHA biphasic coating. The powder incorporation not only impart the coatings with Mn releasing ability, but also greatly increases the surface roughness. However, due to the mismatch of coefficients of thermale expanion (CTE), some cracks could be observed in the coatings. Despite that, the bottom FHA layer effectively buffered such mismatch, the adhesion strength of the coatings with the substrate remains virtually constant: over 400 mN in scanning scratch test.

keywords： Mn-TCP/FHA coating composite colloidal-sol gel roughness adhesion strength

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Colloidal-sol gel derived rough Mn-TCP/FHA coatings with high adhesion strength

任常宝 ¹ 林军 ² 程逵 ¹ 翁文剑 ¹ 苗顺东 ¹ 刘斯倩 ¹

1、浙江大学材料系
2、浙江大学附属第一医院口腔科

摘要：In this work, composite calcium phosphate coatings containing Manganese ions are prepared through a colloidal-sol gel method. Mn containing 僴円-tricalcium phosphate powders are embedded in a fluoridated hydroxyapatite (FHA) matrix to form Mn-TCP-FHA composites via colloidal-sol gel method. This composite layer is deposited on top of a FHA layer to form a Mn-TCP-FHA/FHA biphasic coating. The powder incorporation not only impart the coatings with Mn releasing ability, but also greatly increases the surface roughness. However, due to the mismatch of coefficients of thermale expanion (CTE), some cracks could be observed in the coatings. Despite that, the bottom FHA layer effectively buffered such mismatch, the adhesion strength of the coatings with the substrate remains virtually constant: over 400 mN in scanning scratch test.

关键词： Mn-TCP/FHA coatings;composite;colloidal-sol gel;roughness;adhesion strength

基金：

1. Research Fund of the Doctoral Program of Higher Education of China; Scientific Research Foundation for Returned Scholars（20050335040,200703351015,2008-890）

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Ren Changbao,Lin Jun,Cheng Kui,et al. Colloidal-sol gel derived rough Mn-TCP/FHA coatings with high adhesion strength[EB/OL]. Beijing:Sciencepaper Online[2009-01-04]. https://www.paper.edu.cn/releasepaper/content/200901-68.

No.2725025837212310****

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论文编号	200901-68
论文题目	Colloidal-sol gel derived rough Mn-TCP/FHA coatings with high adhesion strength
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