High temperature resistant reticulated foam structure and process
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United States of America Patent
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Oct 13, 1992
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N/A
app pub date -
Jul 16, 1991
filing date -
Jul 16, 1991
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Abstract
A high temperature resistant reticulated porous foam structure for use as a diesel emission particulate trap. A reticulated porous foam substrate which is capable of maintaining its structural integrity at temperatures in excess of approximately 2500, and preferably 2700, degrees Fahrenheit is coated with a formed in situ oxidation resistant coating which extends substantially throughout the interstices of the porous foam structure. The coating comprises very thin alternate layers of silicon carbide and a carbide formed from a Group IVA metal which has a melting point in excess of approximately 1850 degrees Centigrade.
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