Scratch resistance of SiO2 and SiO2-ZrO2 sol-gel coatings on glass-ceramic obtained by sintering

被引：1

作者：

Soares, V. O. ^{[1
]}

Soares, Paulo ^{[2
]}

Peitl, O. ^{[1
]}

Zanotto, E. D. ^{[1
]}

Duran, A. ^{[3
]}

Castro, Y. ^{[3
]}

机构：

[1] Univ Fed Sao Carlos, Vitreous Mat Lab, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil

[2] Pontificia Univ Catolica Parana, Escola Politecn, Dept Engn Mecan, BR-80215901 Curitiba, Parana, Brazil

[3] Inst Ceram & Vidrio CSIC, Madrid 28049, Spain

来源：

BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO | 2013年 / 52卷 / 05期

关键词：

sol-gel; coatings; scratch and wear resistance; MECHANICAL-PROPERTIES; LI2O-AL2O3-SIO2; GLASS; SILICA; CRYSTALLIZATION; SUSPENSIONS; BEHAVIOR;

D O I：

10.3989/cyv.272013

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The sol-gel process is widely used to obtain coatings on glass-ceramic substrates in order to improve the scratch and abrasion resistance, also providing a bright and homogeneous appearance of a glaze avoiding expensive final polishing treatments. This paper describes the preparation of silica and silica / zirconia coatings by sol-gel method on Li2O-Al2O3-SiO2 (LAS) glass-ceramic substrates produced by sintering. The coatings were deposited by dip-coating on LAS substrates and characterized by optical microscopy and spectral ellipsometry. On the other hand, hardness and elastic modulus, coefficient of friction and abrasion and scratch resistance of the coatings were determined and compared with the substrate properties. Coatings deposited on LAS glass-ceramic confere the substrate a bright and homogeneous aspect, similar to a glaze, improving the appearance and avoiding the final polishing. However these coatings do not increase the scratch resistance of the substrate only equaling the properties of the glass-ceramic.

引用

页码：225 / 230

页数：6

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