Fabrication of boron articles

Patent · Thu Jan 01 00:00:00 EST 1976

OSTI ID:862623

Benton, Samuel T ^[1]

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1. Knoxville, TN

This invention is directed to the fabrication of boron articles by a powder metallurgical method wherein the articles are of a density close to the theoretical density of boron and are essentially crackfree. The method comprises the steps of admixing 1 to 10 weight percent carbon powder with amorphous boron powder, cold pressing the mixture and then hot pressing the cold pressed compact into the desired article. The addition of the carbon to the mixture provides a pressing aid for inhibiting the cracking of the hot pressed article and is of a concentration less than that which would cause the articles to possess significant concentrations of boron carbide.

• Research Organization: UNION CARBIDE CORP
• DOE Contract Number: W-7405-ENG-26
• Assignee: United States of America as represented by United States Energy (Washington, DC)
• Patent Number(s): US 3976735
• OSTI ID: 862623
• Country of Publication: United States
• Language: English

Related Subjects

fabrication
boron
articles
directed
powder
metallurgical
method
density
close
theoretical
essentially
crackfree
comprises
steps
admixing
10
weight
percent
carbon
amorphous
cold
pressing
mixture
hot
pressed
compact
desired
article
addition
provides
inhibiting
cracking
concentration
possess
significant
concentrations
carbide
cold pressing
percent carbon
cold pressed
amorphous boron
hot pressed
theoretical density
boron carbide
method comprises
weight percent
hot pressing
powder metallurgical
carbon powder
boron powder
possess significant
method comprise
hot press
desired article
significant concentration
boron articles
/264/376/976/