Low friction and galling resistant coatings and processes for coating

Patent · Thu Jan 01 04:00:00 EST 1987

OSTI ID:866173

Johnson, Roger N ^[1]

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1. Richland, WA

The present invention describes coating processes and the resultant coated articles for use in high temperature sodium environments, such as those found in liquid metal fast breeder reactors and their associated systems. The substrate to which the coating is applied may be either an iron base or nickel base alloy. The coating itself is applied to the substrate by electro-spark deposition techniques which result in metallurgical bonding between the coating and the substrate. One coating according to the present invention involves electro-spark depositing material from a cemented chromium carbide electrode and an aluminum electrode. Another coating according to the present invention involves electro-spark depositing material from a cemented chromium carbide electrode and a nickel-base hardfacing alloy electrode.

• Research Organization: WESTINGHOUSE HANFORD CO
• DOE Contract Number: AC06-76FF02170
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4649086
• OSTI ID: 866173
• Country of Publication: United States
• Language: English

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