title: Ca-P bioactive coating prepared by combining microwave-hydrothermal and supersonic atmospheric plasma spraying methods.
abstract: Ca-P based coatings on carbon/carbon composite (C/C) were manufactured via a combined method comprising of microwave-hydrothermal (MH) and supersonic atmospheric plasma spraying (SAPS) techniques. However, a weak mutual interaction between the coating and C/C substrate has been a critical issue for a long time. Herein, we reported a new method for shear strength enhancement without compromising the osteoconductivity and osteoproductivity. Results showed that the inner layer has a strong mechanical interlocking with C/C substrate and the failure mode of outer layer changed from the coating cohesion (within the coating) to adhesive (at the coating/substrate interface) fracture. The shear strength between Ca-P bioactive coating-C/C substrate by MH/SAPS was significantly improved as compared to that prepared by SAPS. The Ca-P bioactive coating exhibited a good bioactivity as evidenced by the formation of a uniform carbonate-apatite layer formed on coating after immersing into stimulated body fluid for a specified period of time.
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China. Electronic address: suyangyang@mail.nwpu.edu.cn.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Su
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China. Electronic address: likezhi@nwpu.edu.cn.
authors.forename: Kezhi
authors.initials: K
authors.lastname: Li
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China. Electronic address: zhangleilei@nwpu.edu.cn.
authors.forename: Leilei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Department of Applied Chemistry School of Science, Northwestern Polytechnical University, Xi'an, 710072, China. Electronic address: shameelfarhan@yahoo.com.
authors.forename: Shameel
authors.initials: S
authors.lastname: Farhan
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China. Electronic address: jlliushoujie@126.com.
authors.forename: Shoujie
authors.initials: S
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China. Electronic address: shigg@mail.nwpu.edu.cn.
authors.forename: Guoge
authors.initials: G
authors.lastname: Shi
mesh_terms: D002130:Calcium Phosphates / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D020099:Coated Materials, Biocompatible / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008872:Microwaves; D033081:Shear Strength; D013052:Spectrometry, X-Ray Emission; D017550:Spectroscopy, Fourier Transform Infrared; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; D002244:Carbon; C020243:calcium phosphate
keywords: Ca-P bioactive coating; Carbon/carbon composite (C/C); Microwave-hydrothermal (MH); SBF; Shear strength