Large mirror fabrication of low expansion glasses
β Scribed by Julie Spangenberg-Jolley
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 371 KB
- Volume
- 160
- Category
- Article
- ISSN
- 0004-640X
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π SIMILAR VOLUMES
Traditional X-ray mirrors made from Zerodur and silicon carbide are quite expensive because of the fabrication cost involved in achieving a very high surface finish of the order of 15 A or better. The cost of X-ray mirrors can be greatly reduced by using replication methods for producing the grazing
The linear thermal expansion coefficient, a, has been measured from 2 to 32 K and from 55 to 90 K for a machineable glass-ceramic, an "ultra-low expansion" titanium silicate glass (Coming ULE), and ceramic glasses (Cer-Vit and Zerodur), and for glassy carbon, a is negative for the ultra-low expansio