Constrained Sintering of Glass, Glass-Ceramic and Ceramic Coatings on Metal Substrates

Published

July 1, 2001

Author(s)

J N. Calata, G Q. Lu, Tze J. Chuang

Abstract

Many applications new use different materials that are fabricated into structures to obtain the desired combination of properties or to suit particular needs. Ceramics and glasses are often combined with metallic materials for applications in the field of electronics, for insulation and chemical resistance, and for improved structural performance such as in composites. One common method of fabricating such structures is by firing of coatings and films onto substrates. To obtain usable and reliable components several issues need to be addressed. Two of them- the effect of constraint on the densification and interfacial adhesion, are addressed in this paper. Measurements of densification of some glasses and ceramics showed that the densificaiton rate is reduced by substrate constraint and that the effect is more pronounced on crystalline materials than glass. Good adhesion between the coatings and metal substrates also required modifications to the substrate surface to enhance bonding. For coatings sintered onto substrates, such modifications resulted in better bonding. Good adhesion between borosilicate glass and stainless steel was obtained by roughening and preoxidation of the substrate. A very strong adhesion also was obtained between cordierite glass- ceramic and molybdenum substrate after depositing chromium/nickel or chromium/copper layers on the substrate as adhesion layers before coating.

Citation

Surface and Interface Analysis

Volume

31

Issue

No. 7

Pub Type

Journals

Keywords

ceramic, constrained sintering, glass, glass-ceramic, interface

Citation

Calata, J. , Lu, G. and Chuang, T. (2001), Constrained Sintering of Glass, Glass-Ceramic and Ceramic Coatings on Metal Substrates, Surface and Interface Analysis (Accessed July 22, 2024)