Method for producing microporous metal bodies

Danko, Joseph C

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A - human necessities
A01 - agriculture
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Title: Method for producing microporous metal bodies

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Abstract

Tungsten is vapor-deposited by hydrogen reduction of tungsten hexafluoride (WF.sub.6) to produce a tungsten body having from 40 to 100 ppm fluorine. The tungsten is then heated under vacuum to produce grain boundary porosity for a sufficient period of time to allow the pores along the grain boundaries to become interconnected.

Inventors:

Danko, Joseph C ^[1]

Danville, CA

Issue Date:: 1982-01-01

OSTI Identifier:: 864429

Patent Number(s):: 4362564

Assignee:: United States of America as represented by United States (Washington, DC)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL

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B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
B22F3/1143 - {involving an oxidation, reduction or reaction step}

C - CHEMISTRY C23 - COATING METALLIC MATERIAL C23C - COATING METALLIC MATERIAL
C23C16/56 - After-treatment

G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
G21C3/044 - {Fuel elements with porous or capillary structure}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
Y02E30/30 - Nuclear fission reactors

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DOE Contract Number:: AT(04-3)-189

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; producing; microporous; metal; bodies; tungsten; vapor-deposited; hydrogen; reduction; hexafluoride; wf; produce; 40; 100; ppm; fluorine; heated; vacuum; grain; boundary; porosity; sufficient; period; time; allow; pores; boundaries; interconnected; porous metal; grain boundaries; grain boundary; sufficient period; producing microporous; metal bodies; tungsten hexafluoride; hydrogen reduction; /148/75/376/419/976/

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                    Danko, Joseph C. Method for producing microporous metal bodies.  United States: N. p., 1982. 
        Web.

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                    Danko, Joseph C. Method for producing microporous metal bodies.  United States.

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                    Danko, Joseph C. Fri .  
        "Method for producing microporous metal bodies".  United States.  https://www.osti.gov/servlets/purl/864429.

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@article{osti_864429,

  title        = {Method for producing microporous metal bodies},

  author       = {Danko, Joseph C},

  abstractNote = {Tungsten is vapor-deposited by hydrogen reduction of tungsten hexafluoride (WF.sub.6) to produce a tungsten body having from 40 to 100 ppm fluorine. The tungsten is then heated under vacuum to produce grain boundary porosity for a sufficient period of time to allow the pores along the grain boundaries to become interconnected.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1982},

  month        = {1}

}

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