title: Electrophoretic deposition of porous CaO-MgO-SiO2 glass-ceramic coatings with B2O3 as additive on Ti-6Al-4V alloy.
abstract: The sub-micron glass-ceramic powders in CaO-MgO-SiO(2) system with 10 wt% B(2)O(3) additive were synthesized by sol-gel process. Then bioactive porous CaO-MgO-SiO(2) glass-ceramic coatings on Ti-6Al-4V alloy substrates were fabricated using electrophoretic deposition (EPD) technique. After being calcined at 850°C, the above coatings with thickness of 10-150 μm were uniform and crack-free, possessing porous structure with sub-micron and micron size connected pores. Ethanol was employed as the most suitable solvent to prepare the suspension for EPD. The coating porous appearance and porosity distribution could be controlled by adjusting the suspension concentration, applied voltage and deposition time. The heat-treated coatings possessed high crystalline and was mainly composed of diopside, akermanite, merwinite, calcium silicate and calcium borate silicate. Bonelike apatite was formed on the coatings after 7 days of soaking in simulated body fluid (SBF). The bonding strength of the coatings was needed to be further improved.
authors.affiliation: College of Materials Science and Engineering, Sichuan University, Chengdu, 610064, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
authors.forename: Xianchun
authors.initials: X
authors.lastname: Chen
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Liao
authors.forename: Zhongbing
authors.initials: Z
authors.lastname: Huang
authors.forename: Xiuli
authors.initials: X
authors.lastname: Dan
authors.forename: Guangfu
authors.initials: G
authors.lastname: Yin
mesh_terms: D000497:Alloys; D001826:Body Fluids; D001896:Boron Compounds / Q000737:chemistry*; D002516:Ceramics / Q000737:chemistry*; D004586:Electrophoresis; D005898:Glass / Q000737:chemistry*; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D013997:Time Factors; D014025:Titanium / Q000737:chemistry*
chemical_list: D000497:Alloys; D001896:Boron Compounds; C509301:CaO-MgO-SiO2 glass; C031462:titanium alloy (TiAl6V4); C023506:Glass ceramics; D014025:Titanium