Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5439217 | Ceramics International | 2017 | 19 Pages |
Abstract
A silicon-substituted hydroxyapatite (Si-HA) coating for SiC-coated carbon/carbon composites has been prepared by pack cementation and electrochemical deposition. The morphology, microstructure and in-vitro bioactivity of the Si-HA/SiC double-layer coatings were investigated. Results showed that the SiC inner-layer exhibited high crystallinity. The Si-HA outer-layer had a smaller crystal size than pure hydroxyapatite (HA). Simulated body fluid (SBF) immersion tests showed that the Si-HA coating was uniformly covered by a layer of apatite after 7 days of immersion, while the apatite layer formed on the HA coating was inhomogeneous. This work demonstrates that the Si-HA coating may have better bioactivity than a HA coating and shows promise for the potential application as bioactive coating.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Li Kezhi, Guo Qian, Zhang Leilei, Zhang Yulei, Liu Shoujie, Guo Kebing, Li Shaoxian,