Supercritical fluid extraction
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United States of America Patent
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Aug 10, 2004
Grant Date -
May 13, 2004
app pub date -
Nov 12, 2002
filing date -
Nov 12, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method is provided for fabricating an abrasive article having porosity. The method includes blending a mixture of abrasive grain, bond material, and pore inducer, in which the pore inducer is soluble in a supercritical fluid, and the abrasive grain and bond material are substantially insoluble in the supercritical fluid. The mixture is pressed into an abrasive laden composite and exposed to the supercritical fluid for a period of time suitable to dissolve at least a portion of the pore inducer. The composite is thermally processed.
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