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Title: METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE

Abstract

A method is given for coating graphite with a hard, tenacious layer of niobium carbide up to 30 mils or more thick. The method makes use of the discovery that niobium metal, if degassed and heated rapidly below the carburization temperature in contact with graphite, spreads, wets, and penetrates the graphite without carburization. The method includes the obvious steps of physically contacting niobium powders or other physical forms of niobium with graphite, degassing the assembly below the niobium melting point, e.g., 1400 deg C, heating to about 2200 to 2400 deg C within about 15 minutes while outgassing at a high volume throughput, and thereafter carburizing the niobium. (AEC)

Inventors:
; ;
Issue Date:
OSTI Identifier:
4819137
Patent Number(s):
3017286
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
NSA Number:
NSA-16-004523
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-62
Country of Publication:
United States
Language:
English
Subject:
METALS, CERAMICS, AND OTHER MATERIALS; COATING; DEGASSING; GRAPHITE; HEAT TREATMENTS; HEATING; HIGH TEMPERATURE; LAYERS; MELTING POINTS; NIOBIUM; NIOBIUM CARBIDES; POWDERS; THICKNESS

Citation Formats

Kane, J S, Carpenter, J H, and Krikorian, O H. METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE. United States: N. p., 1962. Web.
Kane, J S, Carpenter, J H, & Krikorian, O H. METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE. United States.
Kane, J S, Carpenter, J H, and Krikorian, O H. Tue . "METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE". United States.
@article{osti_4819137,
title = {METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE},
author = {Kane, J S and Carpenter, J H and Krikorian, O H},
abstractNote = {A method is given for coating graphite with a hard, tenacious layer of niobium carbide up to 30 mils or more thick. The method makes use of the discovery that niobium metal, if degassed and heated rapidly below the carburization temperature in contact with graphite, spreads, wets, and penetrates the graphite without carburization. The method includes the obvious steps of physically contacting niobium powders or other physical forms of niobium with graphite, degassing the assembly below the niobium melting point, e.g., 1400 deg C, heating to about 2200 to 2400 deg C within about 15 minutes while outgassing at a high volume throughput, and thereafter carburizing the niobium. (AEC)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1962},
month = {1}
}