Strong bonding strength between HA and (NH4)2S2O8-treated carbon/carbon composite by hydrothermal treatment and induction heating
✍ Scribed by Xiong Xin-bo; Zeng Xie-rong; Zou Chun-li; Zhou Ji-Zhao
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 652 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1742-7061
No coin nor oath required. For personal study only.
✦ Synopsis
Carbon/carbon composite with hydroxyapatite (HA) coating is an attractive material in the dental and orthopedic fields, but the reported bonding strength between them was very poor. In this study, a compact crystalline HA coating on (NH(4))(2)S(2)O(8)-treated C/C substrate about 10 microm in width was obtained by hydrothermal treatment and induction heating. The microstructure, composition and morphologies of the as-prepared coatings were identified by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. A strong shear strength averaging 74.2 MPa between C/C substrate and HA was achieved and adhesion failures were observed more frequently than cohesion failures. The coating adhesion measured using a scratch test was 23 N and the reasons for this are discussed.