Structural and chemical analysis of silica-doped β-TCP ceramic coatings on surgical grade 316L SS for possible biomedical application

Abstract

Please cite this article in press as: K. Prem Ananth, et al., Structural and chemical analysis of silica-doped ␤-TCP ceramic coatings on surgical grade 316L SS for possible biomedical application, J. Asian Ceram. Soc. (2015), http://dx. a b s t r a c tWe have developed a novel approach to introduce silica-doped ␤-tricalcium phosphate (Si-␤-TCP) on 316L SS substrates for enhanced biological properties. Doping of ␤-TCP with silica loadings ranging from 0 to 8 mol% was carried out using chemical precipitation method. Si-␤-TCP powder was sintered at 800 • C followed by coating it on 316L SS substrate using electrophoretic deposition. The coated and uncoated samples were investigated by various characterization techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and X-ray fluorescence spectroscopy (XRF). Biomineralization ability of the coatings was evaluated by immersing in simulated body fluid (SBF) solution for different number of days such as 7, 14, 21 and 28 days. The results obtained in our study have shown that the apatite formation ability was high for the 8 mol% of Si-␤-TCP. This will promote better biomineralization ability compared to the other coatings.

Synthesis of nano-alumina powder via recrystallization of ammonium alum

“…2 and listed in Table I were located at ~594 and ~447 cm -1 , which referred to the Al-O bending vibration of the Al-OH groups. In addition, 640 cm -1 peak represented the stretching vibration of the Al-O band and identified the typical absorption band of α-Al 2 O 3 , ~3300-3510 cm -1 represented the broadening vibration of the O-H bands, and the stretching vibrations of the C-H band were located at ~2866 and ~2924 cm -1 [17][18][19]. Fig.…”

Hydroxyapatite for bone related applications derived from sea shell waste by simpleprecipitation method

“…It has been suggested that surface chemistry plays an important role in this process even the functional groups of materials have a large effect on the bone bonding property [67]. Negative groups (OH − and PO 4 3− ) are important for the apatite formation [68]. During soaking period, the positive ions include Ca 2+ , Mg 2+ and Na 2+ from SBF are attracted by the surface PO 4 3− ions presented in the sample.…”

Ionic Substitutions in Non-Apatitic Calcium Phosphates

“…Ionic substitution in both α and βTCP is currently being investigated. A solid-state reaction, as well as the heat treatment of already precipitated powders, are commonly applied to synthesize these materials [ 97 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 ]. It is worth underlining that there are two main directions in ionic modification of α and βTCP.…”

“…It is not only magnesium that is being introduced into the βTCP crystal lattice. In the literature, following examples of other ionic modifications can be found: sodium [ 127 , 143 ], potassium [ 128 ], silver [ 135 ], manganese [ 132 ], silicon [ 111 , 133 ], strontium [ 107 , 112 , 113 , 114 ], copper [ 136 ], cobalt [ 137 ], aluminium [ 146 ], iron [ 139 , 140 , 141 ], lantanium [ 131 ], and rare earth elements [ 145 ].…”