Inventors:
William Lewis Phillips - Wilmington DE
Ernest Alan Uebler - Newark DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
B01D 2310
Abstract:
A sintered porous metal filter having upper and lower surfaces with grooves in the filter alternately in communication with the upper and lower surfaces is strengthened by filling the grooves with granular material. The filter is formed from an alloy containing 30 to 40 percent by weight chromium, about 3 percent by weight silicon, minor amounts of carbon and nitrogen and the remainder iron.