Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments
Abstract
The present invention relates to a structural composition useful in corrosive hydrogen-fluorine environments at temperatures in excess of 1400.degree. K. The composition is formed of a isostatically pressed and sintered or a hot-pressed mixture of lanthanum hexaboride particles and about 10-30 vol. % carbon. The lanthanum-hexaboride reacts with the high-temperature fluorine-containing bases to form an adherent layer of corrosion-inhibiting lanthanum trifluoride on exposed surfaces of the composition. The carbon in the composite significantly strengthens the composite, enhances thermal shock resistance, and significantly facilitates the machining of the composition.
- Inventors:
-
- Knoxville, TN
- Oak Ridge, TN
- Ten Mile, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- OSTI Identifier:
- 863855
- Patent Number(s):
- 4261753
- Assignee:
- United States of America as represented by United States (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:
- lanthanum-hexaboride; carbon; composition; corrosive; hydrogen-fluorine; environments; relates; structural; useful; temperatures; excess; 1400; degree; formed; isostatically; pressed; sintered; hot-pressed; mixture; lanthanum; hexaboride; particles; 10-30; vol; reacts; high-temperature; fluorine-containing; bases; form; adherent; layer; corrosion-inhibiting; trifluoride; exposed; surfaces; composite; significantly; strengthens; enhances; thermal; shock; resistance; facilitates; machining; shock resistance; thermal shock; exposed surface; composition useful; lanthanum hexaboride; isostatically pressed; exposed surfaces; containing base; hydrogen-fluorine environments; carbon composition; corrosive hydrogen-fluorine; /501/
Citation Formats
Holcombe, Cressie E, Kovach, Louis, and Taylor, Albert J. Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments. United States: N. p., 1981.
Web.
Holcombe, Cressie E, Kovach, Louis, & Taylor, Albert J. Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments. United States.
Holcombe, Cressie E, Kovach, Louis, and Taylor, Albert J. Thu .
"Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments". United States. https://www.osti.gov/servlets/purl/863855.
@article{osti_863855,
title = {Lanthanum-hexaboride carbon composition for use in corrosive hydrogen-fluorine environments},
author = {Holcombe, Cressie E and Kovach, Louis and Taylor, Albert J},
abstractNote = {The present invention relates to a structural composition useful in corrosive hydrogen-fluorine environments at temperatures in excess of 1400.degree. K. The composition is formed of a isostatically pressed and sintered or a hot-pressed mixture of lanthanum hexaboride particles and about 10-30 vol. % carbon. The lanthanum-hexaboride reacts with the high-temperature fluorine-containing bases to form an adherent layer of corrosion-inhibiting lanthanum trifluoride on exposed surfaces of the composition. The carbon in the composite significantly strengthens the composite, enhances thermal shock resistance, and significantly facilitates the machining of the composition.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1981},
month = {Thu Jan 01 00:00:00 EST 1981}
}
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