Metal matrix composite
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United States of America Patent
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Nov 9, 1999
Issued Date -
N/A
app pub date -
May 6, 1997
filing date -
Jan 19, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved metal matrix composite utilizes boron carbide as a ceramic additive to a base material metal. The base material metal is aluminum, magnesium, or titanium, or an alloy thereof, provided in powder form with the balance of the material comprising various trace metals such as chromium, copper, iron, magnesium, silicon, titanium, and zinc. The boron carbide powder comprises 10 to 30% by weight of the metal matrix composition. There is at least one other metal additive. The compositions are useful in a variety of applications where lightweight, strength, stiffness, hardness, and low density are desirable. The compositions are extrudable and weldable.
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