Examples of recent developments of low expansion glass ceramics are presented. These include new cook top panels with higher temperature stability and new base colours. The expansion properties achieved for mirror segments of several large telescopes are evaluated. For mirror substrates in extreme UV-lithography the requirements for zero expansion have become tighter than in previous applications; it is shown that these requirements can be met in principle.
Origin
Schott Glas, Germany
Journal Title
Glass Technology 45 2 April 2004 51-53
Sector
Glass Ceramics
Class
GC 576