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Title: Iron aluminide alloy coatings and joints, and methods of forming

A method of joining two bodies together, at least one of the bodies being predominantly composed of metal, the two bodies each having a respective joint surface for joining with the joint surface of the other body, the two bodies having a respective melting point, includes the following steps: a) providing aluminum metal and iron metal on at least one of the joint surfaces of the two bodies; b) after providing the aluminum metal and iron metal on the one joint surface, positioning the joint surfaces of the two bodies in juxtaposition against one another with the aluminum and iron positioned therebetween; c) heating the aluminum and iron on the juxtaposed bodies to a temperature from greater than or equal to 600.degree. C. to less than the melting point of the lower melting point body; d) applying pressure on the juxtaposed surfaces; and e) maintaining the pressure and the temperature for a time period effective to form the aluminum and iron into an iron aluminide alloy joint which bonds the juxtaposed surfaces and correspondingly the two bodies together. The method can also effectively be used to coat a body with an iron aluminide coating.
Inventors:
 [1];  [1];  [1]
  1. (Idaho Falls, ID)
Issue Date:
OSTI Identifier:
869514
Assignee:
EG&G Idaho, Inc. (Idaho Falls, ID) INEEL
Patent Number(s):
US 5350107
Contract Number:
AC07-76ID01570
Research Org:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
Country of Publication:
United States
Language:
English
Subject:
iron; aluminide; alloy; coatings; joints; methods; forming; method; joining; bodies; predominantly; composed; metal; respective; joint; surface; melting; following; steps; providing; aluminum; surfaces; positioning; juxtaposition; positioned; therebetween; heating; juxtaposed; temperature; equal; 600; degree; applying; pressure; maintaining; time; period; effective; form; bonds; correspondingly; effectively; coat; coating; aluminide alloy; time period; iron aluminide; applying pressure; aluminum metal; following steps; respective melting; alloy coatings; alloy coating; aluminide coating; /228/427/