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Pressurized heat treatment of glass-ceramic to control thermal expansion
Pressurized heat treatment of glass-ceramic to control thermal expansion
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机译:微晶玻璃加压热处理以控制热膨胀
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摘要
A method of producing a glass-ceramic having a specified thermal expansion value is disclosed. The method includes the step of pressurizing the parent glass material to a predetermined pressure during heat treatment so that the glass-ceramic produced has a specified thermal expansion value. Preferably, the glass-ceramic material is isostatically pressed. A method for forming a strong glass-ceramic to metal seal is also disclosed in which the glass-ceramic is fabricated to have a thermal expansion value equal to that of the metal. The determination of the thermal expansion value of a parent glass material placed in a high- temperature environment is also used to determine the pressure in the environment.
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