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Title: Alkali-lead-iron phosphate glass and associated method

Abstract

A glass composition and method of preparation utilizes a mixture consisting of phosphorus oxide within the range of about 40 to 49 molar percent, lead oxide within the range of about 10 to 25 molar percent, iron oxide within the range of about 10 to 17 molar percent and an alkali oxide within the range of about 23 to 30 molar percent. The glass resulting from the melting and subsequent solidifying of the mixture possesses a high degree of durability and a coefficient of thermal expansion as high as that of any of a number of metals. Such features render this glass highly desirable in glass-to-metal seal applications.

Inventors:
 [1];  [2];  [3]
  1. Oak Ridge, TN
  2. Knoxville, TN
  3. Santafe de Bogota, CO
Issue Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
869212
Patent Number(s):
5298329
Assignee:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
alkali-lead-iron; phosphate; glass; associated; method; composition; preparation; utilizes; mixture; consisting; phosphorus; oxide; range; 40; 49; molar; percent; lead; 10; 25; iron; 17; alkali; 23; 30; resulting; melting; subsequent; solidifying; possesses; degree; durability; coefficient; thermal; expansion; metals; features; render; highly; desirable; glass-to-metal; seal; applications; associated method; lead-iron phosphate; iron phosphate; alkali oxide; thermal expansion; iron oxide; glass composition; phosphate glass; lead oxide; molar percent; metal seal; mixture consisting; highly desirable; glass resulting; glass-to-metal seal; /428/501/

Citation Formats

Boatner, Lynn A, Sales, Brian C, and Franco, Sofia C. S. Alkali-lead-iron phosphate glass and associated method. United States: N. p., 1994. Web.
Boatner, Lynn A, Sales, Brian C, & Franco, Sofia C. S. Alkali-lead-iron phosphate glass and associated method. United States.
Boatner, Lynn A, Sales, Brian C, and Franco, Sofia C. S. Sat . "Alkali-lead-iron phosphate glass and associated method". United States. https://www.osti.gov/servlets/purl/869212.
@article{osti_869212,
title = {Alkali-lead-iron phosphate glass and associated method},
author = {Boatner, Lynn A and Sales, Brian C and Franco, Sofia C. S.},
abstractNote = {A glass composition and method of preparation utilizes a mixture consisting of phosphorus oxide within the range of about 40 to 49 molar percent, lead oxide within the range of about 10 to 25 molar percent, iron oxide within the range of about 10 to 17 molar percent and an alkali oxide within the range of about 23 to 30 molar percent. The glass resulting from the melting and subsequent solidifying of the mixture possesses a high degree of durability and a coefficient of thermal expansion as high as that of any of a number of metals. Such features render this glass highly desirable in glass-to-metal seal applications.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Patent:

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