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Title: Low friction and galling resistant coatings and processes for coating

Abstract

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.

Inventors:
 [1]
  1. Richland, WA
Issue Date:
Research Org.:
WESTINGHOUSE HANFORD CO
OSTI Identifier:
866173
Patent Number(s):
4649086
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
friction; galling; resistant; coatings; processes; coating; describes; resultant; coated; articles; temperature; sodium; environments; found; liquid; metal; fast; breeder; reactors; associated; systems; substrate; applied; iron; base; nickel; alloy; electro-spark; deposition; techniques; result; metallurgical; bonding; according; involves; depositing; material; cemented; chromium; carbide; electrode; aluminum; nickel-base; hardfacing; resistant coating; nickel base; base alloy; depositing material; breeder reactor; fast breeder; liquid metal; metal fast; deposition techniques; breeder reactors; resistant coatings; temperature sodium; alloy electrode; coating process; deposition technique; coated article; resultant coated; coating processes; metallurgical bond; aluminum electrode; iron base; /428/427/

Citation Formats

Johnson, Roger N. Low friction and galling resistant coatings and processes for coating. United States: N. p., 1987. Web.
Johnson, Roger N. Low friction and galling resistant coatings and processes for coating. United States.
Johnson, Roger N. Thu . "Low friction and galling resistant coatings and processes for coating". United States. https://www.osti.gov/servlets/purl/866173.
@article{osti_866173,
title = {Low friction and galling resistant coatings and processes for coating},
author = {Johnson, Roger N},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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