METHOD FOR COATING GRAPHITE WITH NIOBIUM CARBIDE

Patent · Mon Jan 15 23:00:00 EST 1962

OSTI ID:4819137

Kane, J S; Carpenter, J H; Krikorian, O H

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)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-16-004523
• Assignee: U.S. Atomic Energy Commission
• Patent Number(s): US 3017286
• OSTI ID: 4819137
• Country of Publication: United States
• Language: English

Related Subjects

COATING
DEGASSING
GRAPHITE
HEAT TREATMENTS
HEATING
HIGH TEMPERATURE
LAYERS
MELTING POINTS
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM
NIOBIUM CARBIDES
POWDERS
THICKNESS