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Proceedings Paper

Advanced processing of the Zerodur R glass ceramic
Author(s): Thomas A. Marx
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Paper Abstract

The Zerodur glass ceramic is an extraordinary material possessing a very low thermal expansion over a broad temperature range. Depending on the size of the castings, a continuous or a discontinuous melting technology is used in the manufacture of Zerodur. Continuous melters are being operated regularly in Germany and recently in the United States. The latest generation of discontinuous melters started production of 8.2 m spincast telescope blanks in early 1991. Zerodur fusion is a special process to generate lightweighted mirror blanks and special components. It requires glassy material and generates bonds that are as strong as the bulk material. Further process development such as waterjet cutting and insertion technologies are underway and may generate components of unique shapes and performance.

Paper Details

Date Published: 1 November 1991
PDF: 6 pages
Proc. SPIE 1535, Passive Materials for Optical Elements, (1 November 1991); doi: 10.1117/12.48309
Show Author Affiliations
Thomas A. Marx, Schott Glass Technologies, Inc. (United States)


Published in SPIE Proceedings Vol. 1535:
Passive Materials for Optical Elements
Gary W. Wilkerson, Editor(s)

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