title: Surface modifications and Nano-composite coatings to improve the bonding strength of titanium-porcelain.
abstract: Surface modifications of Ti and nano-composite coatings were employed to simultaneously improve the surface roughness, corrosion resistance and chemical bonding between porclain-Ti. The specimens were studied by field-emission scanning electron microscopy, surface roughness, differential scanning calorimetry, Fourier transform infrared spectroscopy, corrosion resistance and bonding strength tests. The SEM results showed that hybrid structures with micro-stripes, nano-pores and nano-protuberances were prepared by surface modification of Ti, which significantly enhanced the surface roughness and corrosion resistance of Ti. Porous nano-composite coatings were synthesized on Ti anodized with pre-treatment in 40% HF acid. TiO2 nanoparticles were added into the hybrid coating to increase the solid phase content of the sols and avoid the formation of microcracks. With the TiO2 content increasing from 45 wt% to 60 wt%, the quantities of the microcracks on the coating surface gradually decreased. The optimal TiO2 content for the nanocomposite coatings is 60 wt% in this research. Compared to the uncoated group, the bonding strength of the coated groups showed a bonding strength improvement of 23.96%. The cytotoxicity of the 4# coating group was ranked as zero, which corresponds to non-cytotoxicity.
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China; ustralian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD 4072, Australia. Electronic address: guolitong810104@163.com.
authors.forename: Litong
authors.initials: L
authors.lastname: Guo
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Xiaoyuan
authors.initials: X
authors.lastname: Chen
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Xuemei
authors.initials: X
authors.lastname: Liu
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Wei
authors.initials: W
authors.lastname: Feng
authors.affiliation: School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, P.R. China.
authors.forename: Baoe
authors.initials: B
authors.lastname: Li
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Cheng
authors.initials: C
authors.lastname: Lin
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Xueyu
authors.initials: X
authors.lastname: Tao
authors.affiliation: China University of Mining and Technology, Xuzhou 221116, P.R. China.
authors.forename: Yinghuai
authors.initials: Y
authors.lastname: Qiang
mesh_terms: D000818:Animals; D002460:Cell Line; D020099:Coated Materials, Biocompatible / Q000737:chemistry / Q000494:pharmacology; D003776:Dental Porcelain / Q000737:chemistry / Q000494:pharmacology; D051379:Mice; D053761:Nanocomposites / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry / Q000494:pharmacology
chemical_list: D020099:Coated Materials, Biocompatible; D003776:Dental Porcelain; D014025:Titanium
keywords: Adhesion;surface modificstion; Biomaterials; Coating; Sol–gel