Strengthening of Glass by Sol‐Gel Coatings

Fabes, B. D.; Uhlmann, D. R.

doi:10.1111/j.1151-2916.1990.tb05146.x

Cited by 62 publications

(39 citation statements)

References 20 publications

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“…The influence of Si02 coatings on the bending strength of fused silica was examined by Fabes et al [64]. The surface of a sampie was at first damaged and weakened by scratches and flaws and then was repaired reasonably by a Si02 coating.…”

Section: Strengthening Coa Tlngsmentioning

confidence: 99%

Coatings for High Temperature Use

Köstlin¹

2004

Sol-Gel Technologies for Glass Producers and Users

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Oxidation resistant nickel-aluminide coatings are designed to develop a protective alumina scale during high temperature exposure. It is well established that platinum additions, typically about 6-8 at%, provide substantial improvements in oxidation resistance of such coatings, yet the nature of the platinum effect is still not fully understood. In this work, the oxidation behavior of two commercial NiAl and NiPtAl coatings deposited on the same Ni-base single crystal alloy CMSX-4 was analyzed. Cyclic and isothermal oxidation tests were conducted at 1150 o C in air. Microstructure development and alumina/coating interface chemistry were studied as a function of oxidation time. Numerous voids developed at the Al 2 O 3 /NiAl interface, and sulfur was found to segregate at the void surfaces and at the contact interface, leading to spallation of the scale over the convex areas along ridges on the coating surface. The presence of platinum prevented sulfur segregation and void formation at the Al 2 O 3 /NiPtAl interface. As a result, the Al 2 O 3 scale on the NiPtAl coating remained adherent and virtually no spallation was observed even after prolonged cyclic oxidation.

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Section: Strengthening Coa Tlngsmentioning

confidence: 99%

Coatings for High Temperature Use

Köstlin¹

2004

Sol-Gel Technologies for Glass Producers and Users

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“…Different materials for such coatings have been proposed like sol-gel (Fabes et al 1986;Fabes and Uhlmann 1990;Fabes and Berry 1990;Chen et al 1992;Wang and James 1991) or polymers (Chen et al 1995;Hand et al 1998;Wang et al 1997;Kingston and Hand 2000;Hand et al 2003;Briard et al 2005;Roach et al 1988;Swanson et al 1987). In both cases, actual impregnation of the flaws by the coating is required for significant strengthening.…”

mentioning

confidence: 97%

“…Many mechanisms have been proposed for glass strengthening by coatings (Fabes and Uhlmann 1990;Fabes and Berry 1990;Wang and James 1991;Hand et al 1998Hand et al , 2003Roach et al 1988) but only few of them discuss the impact of the mechanical properties of the coating on glass strengthening. Hand et al (1998) suggested that the value of the Young's modulus of the confined coating can become similar to the glass modulus because of Poisson ratio effects.…”

mentioning

confidence: 98%

Glass strengthening by polymeric coatings: combined effect of mechanical properties and confinement

et al. 2011

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We consider the impact of the mechanical behaviour of polymeric coatings on glass strengthening. We have performed rupture stress measurements and compared the strengthening measured in the rubbery state and the glassy state. We evidence a moderate decrease of the strengthening when the temperature exceeds the glass transition temperature of the coating. Based on the predictions of crack bridging models, we show that the limited difference of strengthening between glassy and rubbery states can be understood if confinement of the polymer inside the crack is taken into account. Similarly, our results suggest that confinement severely limits the shear deformation of polymeric coatings and suppresses viscoelastic dissipation.

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“…Another way to improve the strength of the glasses is to apply on their surface the protective coating obtained by the chemical reaction during the formation of these coating. Typical coatings on a glass are sol-gel coating made on the basis of organosilanes and coating hybrid organic-inorganic which have been resulted from the chemical reaction [8]. The increase in the mechanical properties of glasses can be achieved by the coating of zirconium oxide (ZrO 2 ) [9].…”

Section: Introductionmentioning

confidence: 99%

Optical and Mechanical Characterization of Zirconium Based Sol-Gel Coatings on Glass

Sitarz

Drajewicz²,

Jadach

et al. 2016

Archives of Metallurgy and Materials

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OptIcal and mechanIcal characterIzatIOn Of zIrcOnIum based sOl-gel cOatIngs On glassThe basic factor limiting the use of glasses is their unsatisfactory mechanical strength. The improvement of the mechanical strength of glasses is usually obtained by applying their respective thin surface layers. The object of the research was glass coated with zirconium oxide. For the application of zirconium oxide layer, dip-coating method was used. The resulting materials were subjected to detailed examination of the microstructure (SeM), and mechanical tests (Vickers hardness and modulus of elasticity). in order to evaluate the optical characteristics, the tests were performed by uV/ViS. The thickness of the overlying layers were determined using the method of ellipsometry. The study showed that the obtained sol-gel layer of zirconium oxide (iV) on glasses influence the improvement of the mechanical properties. it has been shown that the applied layers have high adhesion to the substrate.

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Strengthening of Glass by Sol‐Gel Coatings

Cited by 62 publications

References 20 publications

Coatings for High Temperature Use

Coatings for High Temperature Use

Glass strengthening by polymeric coatings: combined effect of mechanical properties and confinement

Optical and Mechanical Characterization of Zirconium Based Sol-Gel Coatings on Glass

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