نتایج جستجو برای: sol gel coating

تعداد نتایج: 145930  

M. A. Faghihi Sani N. Barati

Uniform nanostructure coating of TiO2 was prepared on 316L stainless steel by sol-gel method using Tetra-n-Butyle Titanat (TBT) as alkoxide material. 316L specimens were coated with the mentioned sol by dip coating method. The influences of preparation condition, pH of sol on TiO2 nanostructure coating were investigated. Their structural properties were examined at var...

2011
Carlos Trenado Matthias Wittmar Michael Veith Nataly C Rosero-Navarro Mario Aparicio Alicia Durán Yolanda Castro Daniel J Strauss

Abstract A novel hybrid sol–gel coating has recently been introduced as an alternative to high toxic chromate-based corrosion protection systems. In this paper, we propose a multiscale computational model to estimate the amount and time scale of inhibitor release of the active corrosion protection coating. Moreover, we study the release rate under the influence of parameters such as porosity an...

2007
Ling-Sheng Jang Kuo-Ching Kuo

Lead Zirconate Titanate oxide (PZT) thick films with thicknesses of up to 10 μm were developed using a modified sol-gel technique. Usually, the film thickness is less than 1 μm by conventional sol-gel processing, while the electrical charge accumulation which reveals the direct effect of piezoelectricity is proportional to the film thickness and therefore restricted. Two approaches were adopted...

Journal: :Engineering proceedings 2021

Sol-gel coatings provide environmentally friendly surface protection for metals and can replace toxic pre-treatments such as those based on hexavalent chromium metal alloys. This project ultimately aims to develop silica-based organic–inorganic sol-gel derived thin film possessing anti-corrosion anti-fouling properties aluminium alloy substrates. As with any coating, sample preparation plays a ...

2012
S. M. Valenzuela B. Ben-Nissan

When producing implant materials, achievement of optimal bioactivity and biocompatibility are essential. Nanocoatings can provide an efficient cost effective way to alter the interactions of the implant material with its destined "host" environment. Nanocoatings of sol-gel derived carbonated hydroxyapatite (HAp) and zirconia were produced in this study. The surfaces were characterised by Fourie...

2007

Terbium doped Y2O3 planar waveguides were fabricated by sol–gel process and dip-coating using yttrium acetate as precursor. Two different doping modes were compared, i.e. introduction in the sol of dispersed Tb3+ions from dissolved Tb(NO3)3, or of nanoparticles of Tb2O3 or [Y2O3:50% Tb] from an alcoholic suspension. The chemical and nanostructural properties were analyzed by infrared spectrosco...

Journal: :Processes 2022

This study presents the development of a method for washcoating Ni/boehmite gels, prepared by sol–gel process, onto surface commercial ceramic monolith. Indeed, cordierite monolith in honeycomb shape was used as substrate Ni/Al2O3 deposition. An experimental assembly made order to apply coating on surface. Different suspensions were with various viscosities, and multiple parameters tested withd...

Journal: :Analytical chemistry 2004
Masaru Kato Kumiko Sakai-Kato HongMei Jin Kazuyuki Kubota Hiroshi Miyano Toshimasa Toyo'oka Maria T Dulay Richard N Zare

A miniaturized pepsin reactor was prepared inside a fused-silica capillary (i.d. 75 microm) by coating a pepsin-containing gel on a photopolymerized porous silica monolith. The pepsin-encapsulated film was prepared by a sol-gel method. The sol-gel reaction was optimized so that the sol solution containing pepsin forms a thin film on the photopolymerized sol-gel (PSG) monolith that was initially...

In the last decade, Calcium Titanate has been introduced as a bioceramic with acceptable mechanical and biological properties for orthopaedic implant applications. In this study, CaTiO3 nano-structure coating was produced by sol-gel dip-coating route for biomedical applications. Calcium nitrate and titanium isopropoxide were used as a precursor. After coating process, the specimen was subject...

M. Khorasani-Motlagh M. Noroozifar Z. Yavari

Nanosized TiO2 particles were prepared by sol–gel method. The TiO2 particles were co-deposited with chromium using electrodeposition technique. In investigating of coating surfaces by scanning electron microscope (SEM), the results showed that the morphology of the coating surface was changed by adding TiO2 nanoparticles to the chromium coating. The corrosion behavior of the coatings was assess...

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