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Title: Enhancement of thermal stability of porous bodies comprised of stainless steel or an alloy

Abstract

A method for treating a porous item constructed of metal powder, such as a powder made of Series 400 stainless steel, involves a step of preheating the porous item to a temperature of between about 700 and 900.degree. C. degrees in an oxidizing atmosphere and then sintering the body in an inert or reducing atmosphere at a temperature which is slightly below the melting temperature of the metal which comprises the porous item. The thermal stability of the resulting item is enhanced by this method so that the item retains its porosity and metallic characteristics, such as ductility, at higher (e.g. near-melting) temperatures.

Inventors:
 [1];  [2];  [1];  [3];  [4]
  1. Knoxville, TN
  2. Kingston, TN
  3. Clinton, TN
  4. Harriman, TN
Issue Date:
Research Org.:
Worldwide Energy, Inc. of Delaware (Oak Ridge, TN)
Sponsoring Org.:
USDOE
OSTI Identifier:
1014938
Patent Number(s):
7829012
Application Number:
US Patent Application 11/305,974
Assignee:
Worldwide Energy, Inc. of Delaware (Oak Ridge, TN)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Bischoff, Brian L, Sutton, Theodore G, Judkins, Roddie R, Armstrong, Timothy R, and Adcock, Kenneth D. Enhancement of thermal stability of porous bodies comprised of stainless steel or an alloy. United States: N. p., 2010. Web.
Bischoff, Brian L, Sutton, Theodore G, Judkins, Roddie R, Armstrong, Timothy R, & Adcock, Kenneth D. Enhancement of thermal stability of porous bodies comprised of stainless steel or an alloy. United States.
Bischoff, Brian L, Sutton, Theodore G, Judkins, Roddie R, Armstrong, Timothy R, and Adcock, Kenneth D. Tue . "Enhancement of thermal stability of porous bodies comprised of stainless steel or an alloy". United States. https://www.osti.gov/servlets/purl/1014938.
@article{osti_1014938,
title = {Enhancement of thermal stability of porous bodies comprised of stainless steel or an alloy},
author = {Bischoff, Brian L and Sutton, Theodore G and Judkins, Roddie R and Armstrong, Timothy R and Adcock, Kenneth D},
abstractNote = {A method for treating a porous item constructed of metal powder, such as a powder made of Series 400 stainless steel, involves a step of preheating the porous item to a temperature of between about 700 and 900.degree. C. degrees in an oxidizing atmosphere and then sintering the body in an inert or reducing atmosphere at a temperature which is slightly below the melting temperature of the metal which comprises the porous item. The thermal stability of the resulting item is enhanced by this method so that the item retains its porosity and metallic characteristics, such as ductility, at higher (e.g. near-melting) temperatures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {11}
}

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