title: Strong bonding strength between HA and (NH4)2S2O8-treated carbon/carbon composite by hydrothermal treatment and induction heating.
abstract: 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.
authors.affiliation: Shen Zhen Key Laboratory of Special Functional Materials, Department of Materials Science and Engineering, Shen Zhen University, Shen Zhen 518060, China. xxbszdx@szu.edu.cn
authors.forename: Xin-bo
authors.initials: XB
authors.lastname: Xiong
authors.forename: Xie-rong
authors.initials: XR
authors.lastname: Zeng
authors.forename: Chun-li
authors.initials: CL
authors.lastname: Zou
authors.forename: Ji-Zhao
authors.initials: JZ
authors.lastname: Zhou
mesh_terms: D000645:Ammonium Sulfate / Q000737:chemistry*; D002130:Calcium Phosphates / Q000737:chemistry; D002244:Carbon / Q000737:chemistry*; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D003460:Crystallization; D017886:Durapatite / Q000737:chemistry*; D006358:Hot Temperature; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D017550:Spectroscopy, Fourier Transform Infrared; D013057:Spectrum Analysis; D014867:Water / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; D014867:Water; C031276:ammonium peroxydisulfate; C485838:calcium phosphate, monobasic, anhydrous; D002244:Carbon; D017886:Durapatite; D000645:Ammonium Sulfate