Thick Sol–Gel Coatings Produced by Electrophoretic Deposition

One-pot manufacture of nanoparticle-based films in aqueous media via an electric field-driven assembly process

“…6 The one-pot process approach, regarded as synthesis, stabilization and EPD of nanoentities, has been proved for non-polar solvents 17 and for a hybrid sol-gel synthesis route. 18,19 In both cases, solvents diminished the effects of the water electrolysis during the deposition. The mechanism that we propose now is to process dense and entirely films by electrophoretic deposition using well dispersed as-synthesized nanoparticles hydrothermally synthesized at mild conditions, meaning at temperatures lower than 180 °C.…”

Sol–Gel Protective Coatings for Metals

“…These particles can migrate under an electric field and deposit, forming the coating. SiO 2 coatings onto AISI 304 were prepared by EPD and dipping (Castro 2002; using a particulate sol prepared by mixing MTES and TEOS with NaOH, following the process described by Jonschker (Jonschker 1998). In order to check the protection supplied by these coatings, potentiodynamic tests and polarisation resistance were performed on coated and uncoated polished stainless steel.…”

The Electrophoretic Deposition of Inorganic Nanoscaled Materials-A Review-

“…Using these particles provides a significant advantage for low temperature densification of the films 400c C, in comparison for example with pure silica films. Castro et al 85 have employed the technique for obtaining crack-free, glass-like silica protective coatings on metals. Another related application of EPD and sol-gel techniques was demonstrated by Laubersheimer et al, 86 who produced piezoceramic microcomponents from liquid metal-organic lead-zirconate titanate PZT precursors.…”