Recent developments in glass-ceramic materials

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:141441

Beall, G H ^[1]

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1. Corning Incorporated, NY (United States)

Glass-ceramic materials can be made by sintering and crystallization of fine glass powders or by internal nucleation and crystallization of formed glass articles. In both cases, the final properties are controlled by phase assemblage and microstructure. Transparent glass-ceramics based upon ultra-fine grained {beta}-quartz solid solution have been developed with near-zero thermal expansion coefficient for a variety of consumer and technical products: cookware, stove-tops, telescope mirrors, optical gyroscopes. Fluormica glass-ceramics with a {open_quotes}house-of-cards{close_quotes} microstructure are easily machined and have found wide application in vacuum systems, precision dielectric components, insulators, and medical and dental prostheses. Acicular chain silicate glass-ceramics are strong and tough, and have recently been developed as high performance tableware and magnetic memory disk substrates. Sintered glass-ceramics based on magnesium aluminosilicate frits are the basis of copper-cordierite packaging for advanced IC packaging.

• OSTI ID: 141441
• Report Number(s): CONF-930304--
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERAMICS
COMPOSITE MATERIALS
CRYSTALLIZATION
GLASS
SINTERING
SOLID SOLUTIONS
TECHNOLOGY ASSESSMENT
USES