BEHAVIOR OF PLASMA-SPRAYED HYDROXYAPATITE COATINGS ONTO CARBON/CARBON COMPOSITES IN SIMULATED BODY FLUID

Jin-Ling Sui (), Wu Bo, Zhou Hai, Ning Cao and Mu-Sen Li
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Jin-Ling Sui: Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing, 102617, P. R. China
Wu Bo: Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing, 102617, P. R. China
Zhou Hai: Center of Engineering and Education, Beijing Institute of Petrochemical Technology, No. 19 Qingyuan North Street, Huangcun Town, Daxing District, Beijing, 102617, P. R. China
Ning Cao: School of Materials Science and Engineering, Shandong, University, Jinan 250061, P. R. China
Mu-Sen Li: School of Materials Science and Engineering, Shandong, University, Jinan 250061, P. R. China

Surface Review and Letters (SRL), 2007, vol. 14, issue 06, 1073-1078

Abstract: Two types of hydroxyapatite (HA) coatings onto carbon/carbon composite (C/Ccomposites) substrates, deposited by plasma spraying technique, were immersed in a simulated body fluid (SBF) in order to determine their behavior in conditions similar to the human blood plasma. Calcium ion concentration, pH value, microstructure, and phase compositions were analyzed. Results demonstrated that both the crystalCa–Pphases or the amorphous HA do dissolve slightly, and the dissolution ofCaOphases in SBF was evident after 1 day of soaking. The calcium-ion concentration was decreased and the pH value of SBF was increased with the increasing of the immersing time. The precipitation was mainly composed of HA, which was verified by X-ray diffraction (XRD) and electron-probe microanalyzer.

Keywords: Plasma spraying; carbon/carbon composites; hydroxyapatite coating; simulated body fluid (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010640

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