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Title: Glass ceramic seals to inconel

Abstract

A glass ceramic composition prepared by subjecting a glass composition comprising, by weight, 65-80% SiO.sub.2, 8-16%, Li.sub.2 O, 2-8% , Al.sub.2 O.sub.3, 1-8% K.sub.2 O, 1-5% P.sub.2 O.sub.5 and 1.5-7% B.sub.2 O.sub.3, to the following processing steps of heating the glass composition to a temperature sufficient to crystallize lithium metasilicate therein, holding the glass composition at a temperature and for a time period sufficient to dissolve the lithium metasilicate therein thereby creating cristobalite nucleii, cooling the glass composition and maintaining the composition at a temperature and for a time period sufficient to recrystallize lithium metasilicate therein, and thermally treating the glass composition at a temperature and for a time period sufficient to cause growth of cristobalite and further crystallization of lithium metasilicate producing a glass ceramic composition having a specific thermal expansion coefficient and products containing said composition.

Inventors:
 [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
AT&T Corp., Albuquerque, NM (United States)
OSTI Identifier:
864778
Patent Number(s):
4414282
Application Number:
06/369,965
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC04-67DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
glass; ceramic; seals; inconel; composition; prepared; subjecting; comprising; weight; 65-80; sio; 8-16; 2-8; 1-8; 1-5; 5-7; following; processing; steps; heating; temperature; sufficient; crystallize; lithium; metasilicate; therein; holding; time; period; dissolve; creating; cristobalite; nucleii; cooling; maintaining; recrystallize; thermally; treating; growth; crystallization; producing; specific; thermal; expansion; coefficient; products; containing; ceramic seals; products containing; glass ceramic; expansion coefficient; period sufficient; ceramic composition; composition comprising; thermal expansion; time period; temperature sufficient; glass composition; processing steps; thermally treating; processing step; ceramic seal; /428/65/501/

Citation Formats

McCollister, Howard L, and Reed, Scott T. Glass ceramic seals to inconel. United States: N. p., 1983. Web.
McCollister, Howard L, & Reed, Scott T. Glass ceramic seals to inconel. United States.
McCollister, Howard L, and Reed, Scott T. Tue . "Glass ceramic seals to inconel". United States. https://www.osti.gov/servlets/purl/864778.
@article{osti_864778,
title = {Glass ceramic seals to inconel},
author = {McCollister, Howard L and Reed, Scott T},
abstractNote = {A glass ceramic composition prepared by subjecting a glass composition comprising, by weight, 65-80% SiO.sub.2, 8-16%, Li.sub.2 O, 2-8% , Al.sub.2 O.sub.3, 1-8% K.sub.2 O, 1-5% P.sub.2 O.sub.5 and 1.5-7% B.sub.2 O.sub.3, to the following processing steps of heating the glass composition to a temperature sufficient to crystallize lithium metasilicate therein, holding the glass composition at a temperature and for a time period sufficient to dissolve the lithium metasilicate therein thereby creating cristobalite nucleii, cooling the glass composition and maintaining the composition at a temperature and for a time period sufficient to recrystallize lithium metasilicate therein, and thermally treating the glass composition at a temperature and for a time period sufficient to cause growth of cristobalite and further crystallization of lithium metasilicate producing a glass ceramic composition having a specific thermal expansion coefficient and products containing said composition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1983},
month = {11}
}

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