title: A Novel Strategy for Preparation of Si-HA Coatings on C/C Composites by Chemical Liquid Vaporization Deposition/Hydrothermal Treatments.
abstract: A novel strategy for the preparation of Si-doped hydroxyapatite (Si-HA) coatings on H2O2-treated carbon/carbon composites (C/C) was developed. HA coating was prepared on C/C through chemical liquid vaporization deposition (CLVD)/hydrothermal treatment. HA coating was immersed in an H2SiO3 solution at an autoclave at 413 K for transformation into Si-HA coating. The effects of H2SiO3 mass contents on the phase, morphology, and composition of the Si-HA coatings were studied through SEM, EDS,XRD, and FTIR. Their bonding performance to C/C was measured through a scratch test. Under the optimal content condition, the in vitro skull osteoblast response behaviors of the Si-HA coating were evaluated. Results showed that SiO3(2-) could enter into the HA lattice and occupy the PO4(3-) sites. Doped SiO3(2-) significantly improved the bonding performance of the HA coating to C/C in comparison with the untreated HA. The adhesive strength of the coatings initially increased and then decreased with increasing H2SiO3 content. Meanwhile, the cohesive strength of the Si-HA coatings was almost nearly identical. The Si-HA coating achieved at a content of 90% H2SiO3 exhibited the best bonding performance, and its osteoblast compatibility in vitro was superior to that of the untreated HA coating on C/C through CLVD/hydrothermal treatment.
authors: Shenzhen key laboratory of special functional materials, Shenzhen engineering laborary for advanced technology of ceramics, Department of materials science and engineering, Shenzhen University, Shenzhen 518060, China.
authors: Xiong
authors: X
authors: Xin-Bo
authors: Second People's Hospital of Changzhou, Nanjing Medical University, Changzhou 213003, China.
authors: Ni
authors: N
authors: Xin-Ye
authors: Shenzhen key laboratory of special functional materials, Shenzhen engineering laborary for advanced technology of ceramics, Department of materials science and engineering, Shenzhen University, Shenzhen 518060, China.
authors: Li
authors: L
authors: Ya-Yun
authors: Shenzhen key laboratory of special functional materials, Shenzhen engineering laborary for advanced technology of ceramics, Department of materials science and engineering, Shenzhen University, Shenzhen 518060, China.
authors: Chu
authors: C
authors: Cen-Cen
authors: Shenzhen key laboratory of special functional materials, Shenzhen engineering laborary for advanced technology of ceramics, Department of materials science and engineering, Shenzhen University, Shenzhen 518060, China.
authors: Zou
authors: Z
authors: Ji-Zhao
authors: Shenzhen key laboratory of special functional materials, Shenzhen engineering laborary for advanced technology of ceramics, Department of materials science and engineering, Shenzhen University, Shenzhen 518060, China.
authors: Zeng
authors: Z
authors: Xie-Rong