Pressurized heat treatment of glass-ceramic to control thermal expansion
Abstract
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.
- Inventors:
-
- Dayton, OH
- Issue Date:
- Research Org.:
- MONSANTO RESEARCH CORP
- OSTI Identifier:
- 865556
- Patent Number(s):
- 4536203
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C03 - GLASS C03C - CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS
- DOE Contract Number:
- AC04-76DP00053
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- pressurized; heat; treatment; glass-ceramic; control; thermal; expansion; method; producing; specified; value; disclosed; step; pressurizing; parent; glass; material; predetermined; pressure; produced; preferably; isostatically; pressed; forming; strong; metal; seal; fabricated; equal; determination; placed; high-temperature; environment; determine; predetermined pressure; ceramic material; thermal expansion; heat treatment; isostatically pressed; metal seal; value equal; temperature environment; glass material; parent glass; material placed; high-temperature environment; ceramic mater; control thermal; /65/
Citation Formats
Kramer, Daniel P. Pressurized heat treatment of glass-ceramic to control thermal expansion. United States: N. p., 1985.
Web.
Kramer, Daniel P. Pressurized heat treatment of glass-ceramic to control thermal expansion. United States.
Kramer, Daniel P. Tue .
"Pressurized heat treatment of glass-ceramic to control thermal expansion". United States. https://www.osti.gov/servlets/purl/865556.
@article{osti_865556,
title = {Pressurized heat treatment of glass-ceramic to control thermal expansion},
author = {Kramer, Daniel P},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}
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