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Proceedings Paper

Protective glass coatings for circuits on ceramic substrates
Author(s): E. Berkovsky
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Paper Abstract

Low-melting glass ceramics were developed to form coatings that protect circuits on alumina substrates from corrosion. The influence of (beta) -eucryptite and nitrides on its thermal expansion and crystallization were studied. The coatings, formed from powdered glass at firing temperatures from 430 degree(s) to 480 degree(s)C, have thermal expansion coefficient in the range (95 -85) X 10-7 degree(s)C. High resistance to thermal shock of coatings is due to the presence of crystal phases: 2PbO.ZnO.B2O3 and (beta) - eucryptite. At the surface of the coatings can be seen `islands' of nitrides hydrophobic thin film.

Paper Details

Date Published: 13 August 1993
PDF: 4 pages
Proc. SPIE 1972, 8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine, (13 August 1993); doi: 10.1117/12.151103
Show Author Affiliations
E. Berkovsky, Israel Ceramic and Silicate Institute (Israel)


Published in SPIE Proceedings Vol. 1972:
8th Meeting on Optical Engineering in Israel: Optoelectronics and Applications in Industry and Medicine

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