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Title: 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:
 [1]
  1. (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) SNL
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}
}

Patent:

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