Hard metal composition

Patent · Tue Dec 31 23:00:00 EST 1985

OSTI ID:866062

Sheinberg, Haskell ^[1]

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1. Los Alamos, NM

A composition of matter having a Rockwell A hardness of at least 85 is formed from a precursor mixture comprising between 3 and 10 weight percent boron carbide and the remainder a metal mixture comprising from 70 to 90 percent tungsten or molybdenum, with the remainder of the metal mixture comprising nickel and iron or a mixture thereof. The composition has a relatively low density of between 7 to 14 g/cc. The precursor is preferably hot pressed to yield a composition having greater than 100% of theoretical density.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4626281
• OSTI ID: 866062
• Country of Publication: United States
• Language: English

Related Subjects

/75/
10
100
14
70
85
90
boron
boron carbide
carbide
cc
composition
comprising
comprising nickel
density
formed
hard
hard metal
hardness
hot
hot press
hot pressed
iron
matter
metal
metal composition
metal mix
mixture
mixture comprising
molybdenum
nickel
percent
percent boron
precursor
precursor mixture
preferably
pressed
relatively
remainder
rockwell
theoretical
theoretical density
tungsten
weight
weight percent
yield