Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition
Abstract
The present invention relates to a composition particularly suitable for as structural components subject to high-temperature environments containing gaseous hydrogen and fluorine. The composition of the present invention consists essentially of lanthanum hexaboride-molybdenum diboride with dispersed silicon. The composition is formed by hot pressing a powder mixture of lanthanum hexaboride as the major constituent and molybdenum disilicide. This composition exhibits substantial resistance to thermal shock and corrosion in environments containing hydrogen and fluorine gases at material surface temperatures up to about 1850.degree. K. Upon exposure of the hot-pressed composition to high-temperature environments containing fluorine gases, a highly protective layer of lanthanum trifluoride containing dispersed molybdenum is formed on exposed surfaces of the composition.
- Inventors:
-
- Oak Ridge, TN
- Knoxville, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 864098
- Patent Number(s):
- 4309467
- Assignee:
- United States of America as represented by Department of Energy (Washington, DC)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- W-7405-ENG-26
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- composition; high-temperature; hydrogen-fluorine; environments; method; relates; particularly; suitable; structural; components; subject; containing; gaseous; hydrogen; fluorine; consists; essentially; lanthanum; hexaboride-molybdenum; diboride; dispersed; silicon; formed; hot; pressing; powder; mixture; hexaboride; major; constituent; molybdenum; disilicide; exhibits; substantial; resistance; thermal; shock; corrosion; gases; material; surface; temperatures; 1850; degree; exposure; hot-pressed; highly; protective; layer; trifluoride; exposed; surfaces; structural components; containing hydrogen; gaseous hydrogen; protective layer; thermal shock; exposed surface; particularly suitable; hot pressing; containing gas; material surface; consists essentially; molybdenum disilicide; temperature environments; lanthanum hexaboride; surface temperature; powder mixture; exposed surfaces; surface temperatures; temperature environment; environments containing; hot press; fluorine gas; hydrogen-fluorine environments; high-temperature environment; structural component; major constituent; containing gaseous; /428/264/501/
Citation Formats
Kovach, Louis, and Holcombe, Cressie E. Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition. United States: N. p., 1982.
Web.
Kovach, Louis, & Holcombe, Cressie E. Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition. United States.
Kovach, Louis, and Holcombe, Cressie E. Fri .
"Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition". United States. https://www.osti.gov/servlets/purl/864098.
@article{osti_864098,
title = {Composition for use in high-temperature hydrogen-fluorine environments and method for making the composition},
author = {Kovach, Louis and Holcombe, Cressie E},
abstractNote = {The present invention relates to a composition particularly suitable for as structural components subject to high-temperature environments containing gaseous hydrogen and fluorine. The composition of the present invention consists essentially of lanthanum hexaboride-molybdenum diboride with dispersed silicon. The composition is formed by hot pressing a powder mixture of lanthanum hexaboride as the major constituent and molybdenum disilicide. This composition exhibits substantial resistance to thermal shock and corrosion in environments containing hydrogen and fluorine gases at material surface temperatures up to about 1850.degree. K. Upon exposure of the hot-pressed composition to high-temperature environments containing fluorine gases, a highly protective layer of lanthanum trifluoride containing dispersed molybdenum is formed on exposed surfaces of the composition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.