REACTIVE SINTERING TO ELIMINATE METAL INSERTS IN CARBON-CARBON BRAKE DISCS
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United States of America Patent
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Issued Date -
Feb 25, 2010
app pub date -
Aug 22, 2008
filing date -
Aug 22, 2008
priority date (Note) -
Abandoned
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Abstract
A brake disc rotor or stator is manufactured with slots in the interior face of the disc. A paste comprised of a fine powder of a carbide-forming metal along with fine carbon powder, suspended in an organic binder, is applied to the force-bearing areas in the rotor slot faces or the stator slot faces. The disc is then placed into a furnace in a nitrogen atmosphere and heated to the ignition temperature. When the furnace reaches the ignition temperature, a combustion reaction begins that creates a molten liquid ceramic material on the slot face. Upon cooling, the resulting brake disc has a tough, hard, abrasion-resistant ceramic surface on the portion of the brake disc slot that bears pressure.
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