B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
13/8
B22F 3/22 (2006.01) B01D 39/12 (2006.01) B01D 39/20 (2006.01) B22F 3/11 (2006.01)
Patent
CA 1260655
Abstract: A method of making a porous metal article is disclosed comprising: (a) applying a stabilized suspension of a dis- persed metal particulate in a fluid medium to a por- ous metal support; (b) working the support to fill the openings with the stabilized suspension and remove entrained gas; (c) heating the filled support to dry the sta- bilized suspension and provide the filled support with green or unsintered strength; (d) preferably compressing the dried, filled support to provide better contact between adjacent particles and greater mechanical strength; and (e) sintering the compressed, dried, filled support to remove volatile material and to fuse the individual particles of the metal particulate to the metal support and to each other. The porous metal articles in accordance with the present invention find particular use as filters. They comprise a porous metal support and metal parti- culate material with the individual particles sinter bonded to each other and to the support. Preferably, the porous articles are formed from austenitic stain- less steel containing less than 0.03 parts by weight carbon, have F2 pore ratings at beta = 100 of from 0.1 to 50 micrometers and are capable of being formed about a bending radius of five or less times the thickness of the article while maintaining their integrity.
485388
Marks & Clerk
Pall Corporation
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