Effect of nanosilica type on protective properties of composite ceramic coatings deposited on steel 316L by sol–gel technique

Effect of heat treatment on corrosion properties of mixed sol gel silica–titania (7–3) coating

“…Electrochemical modeling and error calculation were done by ZView software in this study. According to the literature, values of error less than 5% in modeling of EIS results give the best electrochemical interpretation [13,15]. According to Tables 2 and 3, the values of CPE-P (exponent of CPE (Eq.…”

“…CPE-P is the exponent of CPE, with values between − 1 and 1. Approaching the exponent to one illustrates the smooth surface of the coat and the ideal behavior capacitive of the coat [15,16]. Electrochemical modeling and error calculation were done by ZView software in this study.…”

Characterization of ceramic sol–gel coatings as an alternative chemical conversion treatment on commercial carbon steel

“…An interesting and relatively recent possibility is the realization of protective films on metals and, particularly, the fabrication of coating films starting from metal alkoxides. Several coatings produced by sol-gel processing have been studied extensively for corrosion prevention in stainless steel and other metals that naturally form a passive layer on their surface [8][9][10], although sol-gel deposition on active corroding materials, such as iron, with a wide variety of coatings remains unexplored [11][12][13].…”

Bone quality around bioactive silica-based coated stainless steel implants: Analysis by Micro-Raman, XRF and XAS techniques

“…Surface modification of surgical implants by sol gel coatings has been proposed as a tool to generate a surface that besides being protective could also allow the integration of the metal to the human body, generating a ''bioactive'' interface that has the ability of create a natural bonding between the metal surface and the existing bone. It has been demonstrated that inorganic -hybrid SiO 2 coatings, obtained from tetraethylorthosilicate (TEOS) and methyltriethoxysilane (MTES) improve the corrosion behaviour of the AISI 316L stainless steel in biological environments (Ballarre et al, 2007;Checmanowski and Szczygiel, 2008;Chou et al, 2003). The hybrid layers of TEOS and other silanes are not bioactive per se but if the coatings are also functionalized with a bioactive ceramic or glass-ceramic from the CaO-SiO 2 -P 2 O 5 system, it has been proved that the HA rate can be maximized (Höland, 1997;Kokubo et al, 1992;Peitl et al, 2001).…”