Sol-Gel Coatings

Klein, Lisa C.

doi:10.1016/b978-0-08-052421-4.50014-9

Cited by 11 publications

(5 citation statements)

References 44 publications

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“…In this approach, a detailed description of which may be found in several comprehensive reviews, [29][30][31][32][33][34][35][36] controlled hydrolysis and condensation reactions in a precursor solution containing alkoxides of the desired film constituents along with water and additives result in a dried gel film that is subsequently annealed to bring about the desired densification and crystallization (Fig. 1 ).…”

Section: Introductionmentioning

confidence: 99%

Evaluating sol-gel ceramic thin films for metal implant applications. I. Processing and structure of zirconia films on Ti-6Al-4V

Filiaggi¹,

Pilliar²,

Yakubovich³

et al. 1996

J. Biomed. Mater. Res.

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Thin ceramic films or coatings over metallic bone-interfacing implant surfaces have the potential to improve implant performance with respect to implant fixation, wear, or corrosion. In this study, zirconia (ZrO2) thin films formed on Ti-6AI-4V using a polymeric alkoxide-based solgel process were investigated. ZrO2 films of uniform thickness on the order of 100 nm were obtained by dip coating Ti-6AI-4V samples into a zirconium propoxide containing solution using a substrate withdrawal speed ranging from 2 to 8 cm/min and a sol of nominal viscosity approximately 6 cps. These films were essentially free of surface macrodefects but had random submicron "pinholes." X-ray diffraction studies suggested that the films were at least partially crystalline, with some "metastable" cubic and/or tetragonal phases after annealing for 1 h at 500 degrees C. The demonstrated reproducibility of this approach for producing good quality ZrO2 films on Ti-6AI-4V warrants further studies to optimize processing conditions for implant applications.

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Section: Introductionmentioning

confidence: 99%

Evaluating sol-gel ceramic thin films for metal implant applications. I. Processing and structure of zirconia films on Ti-6Al-4V

Filiaggi¹,

Pilliar²,

Yakubovich³

et al. 1996

J. Biomed. Mater. Res.

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“…[75][76][77][78][79] Dip-coating and its variants are commonly used methods for the sol-gel applications. 77,[80][81][82][83] The objective of this work was to produce different surface films of TiO 2 and TiO 2 -SiO 2 by adjusting the sol pH and composition. These results were combined with in vitro bioactivity tests that generally are accepted as giving an indication of the in vivo bioactivity.…”

Section: Introductionmentioning

confidence: 99%

Influence of sol and surface properties onin vitro bioactivity of sol-gel-derived TiO2 and TiO2-SiO2 films deposited by dip-coating method

Jokinen

Pätsi

Rahiala

et al. 1998

J. Biomed. Mater. Res.

136

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Different sol-gel-derived titania and titania-silica films were prepared and their properties related to in vitro bioactivity. The films were prepared by depositing the sols on the substrate surface using a dip-coating method. The sols were monitored carefully as a function of time, using rheological techniques and dynamic light scattering. The topography of the films was characterized using atomic force microscopy, and thicknesses and refractive indexes of the films were evaluated by fitting transmittance spectra measured in a wave length region of 370-1100 nm with a spectrophotometer. The in vitro bioactivity tests were performed in simulated body fluid. Surface topography was found to be of great importance with respect to the bioactivity of the studied films.

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“…In a solgel (or sol-gel) process, a solution (which is single-phase) of simple molecular precursors is converted into nanometer-sized particles to form a colloidal suspension or sol [17,138]. While a solution is simply single-phase, a sol is a suspension of finely dispersed, nanometer size particles.…”

Section: Solgel Process Basicsmentioning

confidence: 99%

“…A process example is the solgel formation of silica [17]. The first step is to choose the appropriate reagents.…”

Section: Solgel Process Examplementioning

confidence: 99%

“…These technologies are a backbone for applying photoresists (photosensitive organic films) in lithography processes [4,16]. A dip technology capable of creating inorganic films (in particular metal oxides) is the solgel technology, which is based on a sol (small solid particles dispersed in liquid) transferred into a gel (three-dimensional crosslinked system) [17]. It is used in particular for creating metal oxide coatings.…”

Section: Introduction Into Depositionmentioning

confidence: 99%

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Deposition Technologies

Gatzen¹,

Saile²,

Leuthold³

2015

Micro and Nano Fabrication

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Deposition of thin-films used in MEMS and NEMS devices rely on a wide variety of technologies. Physical vapor deposition (PVD) uses physical effects like evaporation or ion bombardment to create thin-films on a substrate by forcing source atoms into a gaseous phase. Chemical vapor deposition (CVD) and similar processes create coatings by a chemical reaction of volatile species by using reaction processes defined by chemical reaction equations. While PVD and CVD are dry processes, for depositing conductive thin-films the substrate may be submerged in an electrically conductive liquid (an electrolyte) and subjected to electrochemical or chemical deposition. Spin-coating and spray-coating are two examples of technologies that lend themselves to creating organic films-a technology widely used in depositing photoresists in photolithography. Dip processes like solgel may be used for the creation of oxide coatings.

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Sol-Gel Coatings

Cited by 11 publications

References 44 publications

Evaluating sol-gel ceramic thin films for metal implant applications. I. Processing and structure of zirconia films on Ti-6Al-4V

Evaluating sol-gel ceramic thin films for metal implant applications. I. Processing and structure of zirconia films on Ti-6Al-4V

Influence of sol and surface properties onin vitro bioactivity of sol-gel-derived TiO2 and TiO2-SiO2 films deposited by dip-coating method

Deposition Technologies

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