Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making porous product
Patent
1999-02-26
2000-08-29
Jenkins, Daniel J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Making porous product
419 24, B22F 310
Patent
active
061104175
ABSTRACT:
Metallic powders are extruded from a spinning nozzle to form metallic fibers each having a diameter of 1.0 .mu.m-100 .mu.m. Then, the resultant metallic fibers are formed into a sheet having a porous structure such as a nonwoven sheet, or the like. Thereafter, the sheet is sintered. An active substance is applied to pores of a resultant porous metallic sheet to be used as an electrode substrate of a battery. The metallic fibers are three-dimensionally intertwined with each other by using fluid at a high pressure and a high speed and then, surfaces of the metallic fibers intertwined with each other is fused under pressure at a temperature lower than the melting point of the metal to directly connect intersections of the intertwined metallic fibers so as to form a porous metallic sheet.
REFERENCES:
patent: 3926671 (1975-12-01), Gutjahe et al.
patent: 5294319 (1994-03-01), Kaczur et al.
patent: 5677088 (1997-10-01), Kobayashi
patent: 5766789 (1998-06-01), James et al.
Jenkins Daniel J.
Katayama Special Industries Ltd.
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