NDLI: Fabrication and microstructure of C$_{a}$TiO$

Content Provider	Springer Nature Link
Author	Lü, Xiaowei Lin, Xin Wu, Xiaoyu Hu, Jiang Gao, Bo Huang, Weidong
Copyright Year	2011
Abstract	In order to explore the way to improve the adhesion of the calcium phosphate bioceramic coating to Ti substrate, the CaTiO$_{3}$ coating was fabricated on Ti substrate by laser cladding (LC) using powders of CaCO$_{3}$ and CaHPO$_{4}$, and then the composition and microstructure of the coatings were investigated. During LC, CaCO$_{3}$ can hardly react with Ti, and the coating fabricated using CaCO$_{3}$ powder is mainly composed of the process of CaO, the decomposition product of CaCO$_{3}$. Moreover, the coating has a loosened structure and part of it has peeled off from the substrate. CaHPO$_{4}$ reacts vigorously with Ti, and the coating fabricated using CaHPO$_{4}$ mainly consists of CaTiO$_{3}$ which is one of the reaction products between Ti and CaHPO$_{4}$. Chemical bonding is formed at the interface between coating and substrate, which may enhance the adhesion of the CaTiO$_{3}$ coating to Ti substrate. Furthermore, CaTiO$_{3}$ dendrite and eutectic of CaTiO$_{3}$ and Ca$_{2}$P$_{2}$O$_{7}$ are found on the surface of the coating, implying that a transition can be formed between CaTiO$_{3}$ and some calcium phosphate bioceramic. So CaTiO$_{3}$ coating fabricated using CaHPO$_{4}$ can be a potential candidate to improve the adhesion between calcium phosphate coating and Ti substrate. However, there are also pores and cracks existing in the coating, which may degrade the mechanical properties of the coating.
Starting Page	1093
Ending Page	1097
Page Count	5
File Format	PDF
ISSN	10002413
Journal	Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number	26
Issue Number	6
e-ISSN	19930437
Language	English
Publisher	Wuhan University of Technology
Publisher Date	2011-12-20
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	CaTiO$_{3}$ coating CaCO$_{3}$ CaHPO$_{4}$ Ti substrate laser cladding Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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