skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Porous metallic bodies

Abstract

Porous metallic bodies having a substantially uniform pore size of less than about 200 microns and a density of less than about 25 percent theoretical, as well as the method for making them, are disclosed. Group IIA, IIIB, IVB, VB, and rare earth metal hydrides are heated in a confining container at a controlled rate to a temperature of about greater than the temperature at which the hydride decomposes. Hydrogen is removed from the container and the remaining metal is heated during a second stage to a temperature greater than the temperature at which it was previously heated but not greater than the temperature of 1/2 to 2/3 the temperature at which the metal melts at a controlled rate. The resulting porous metallic body produced has a density less than about 25 percent theoretical and a pore size of less than about 200 microns. The metallic particles of the present invention have high inner surface area and possess minimum resistance to gas flow.

Inventors:
 [1]
  1. (Livermore, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
865714
Patent Number(s):
4560621
Assignee:
United States of America as represented by United States (Washington, DC) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
porous; metallic; bodies; substantially; uniform; pore; size; 200; microns; density; 25; percent; theoretical; method; disclosed; iia; iiib; ivb; vb; rare; earth; metal; hydrides; heated; confining; container; controlled; rate; temperature; hydride; decomposes; hydrogen; removed; remaining; stage; previously; melts; resulting; produced; particles; inner; surface; possess; minimum; resistance; gas; flow; metal hydrides; metallic particles; controlled rate; porous metal; gas flow; inner surface; rare earth; substantially uniform; pore size; earth metal; metal hydride; metal melts; percent theoretical; porous metallic; metallic bodies; uniform pore; metal melt; /428/75/419/

Citation Formats

Landingham, Richard L. Porous metallic bodies. United States: N. p., 1985. Web.
Landingham, Richard L. Porous metallic bodies. United States.
Landingham, Richard L. Tue . "Porous metallic bodies". United States. https://www.osti.gov/servlets/purl/865714.
@article{osti_865714,
title = {Porous metallic bodies},
author = {Landingham, Richard L.},
abstractNote = {Porous metallic bodies having a substantially uniform pore size of less than about 200 microns and a density of less than about 25 percent theoretical, as well as the method for making them, are disclosed. Group IIA, IIIB, IVB, VB, and rare earth metal hydrides are heated in a confining container at a controlled rate to a temperature of about greater than the temperature at which the hydride decomposes. Hydrogen is removed from the container and the remaining metal is heated during a second stage to a temperature greater than the temperature at which it was previously heated but not greater than the temperature of 1/2 to 2/3 the temperature at which the metal melts at a controlled rate. The resulting porous metallic body produced has a density less than about 25 percent theoretical and a pore size of less than about 200 microns. The metallic particles of the present invention have high inner surface area and possess minimum resistance to gas flow.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {1}
}

Patent:

Save / Share: