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US 6,547,993 B1Granted
Process for making polytetrafluoroethylene-aluminum composite and product made
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorVasant S. Joshi
Life of this patent
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Abstract
A process for making a Teflon/aluminum composite includes providing Teflon powder and aluminum powder wherein a size of Teflon particles is about 7 to 12 times a size of aluminum particles; mixing the Teflon powder with the aluminum powder on about a 3 to 1 weight basis; pressing the mixed powder into a shape at a pressure ranging from about 6000 psi to about 16000 psi; and then sintering the pressed shape.
Claims17
A process, comprising:
- providing polytetrafluoroethylene powder and aluminum powder wherein a size of Teflon particles is about 7 to 12 times a size of aluminum particles;
- mixing the polytetrafluoroethylene powder with the aluminum powder on about a 3 to 1 weight basis;
- pressing the mixed powder into a shape at a pressure ranging from about 6000 psi to about 16000 psi;
- and then
- sintering the pressed shape.
2 more elements
A process, comprising:
- providing polytetrafluoroethylene powder and aluminum powder wherein a size of Teflon particles is about 35 microns and a size of aluminum particles is about 5 microns;
- mixing the polytetrafluoroethylene powder and the aluminum powder on a weight basis of 73.5% Teflon and 26.5% aluminum;
- pressing the mixed powder into a shape at a pressure of 10,000 psi;
- and then
- sintering the pressed shape.
2 more elements
Dependencies are inferred from the claim text.