Process for producing metal foams having uniform cell structure

C - Chemistry – Metallurgy – 23 – C

Patent

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Details

C23C 18/31 (2006.01) B22D 19/00 (2006.01) B22D 25/04 (2006.01) C22C 1/08 (2006.01) C23C 16/06 (2006.01) H01M 4/04 (2006.01)

Patent

CA 2619013

A method for producing porous metal plated polymeric foam having uniform pore properties. Polymeric foam buns are horizontally cut along a longitudinal surface thereby lifting off a foam sheet. The sheet is spooled and then reticulated to remove any remaining cell walls and to round off the internal pore struts to enlarge the openings between the adjacent cells. The reticulated foam sheet is unwound and then plated. Slabs may be attached end to end and loop slitted and then reticulated. The resulting plated uniform foam provides a superior substrate for battery plaques and other applications.

L~invention concerne un procédé de fabrication d~une mousse polymère poreuse à revêtement métallique dont les pores possèdent des propriétés uniformes. Des pains de mousse polymère sont découpés horizontalement le long d~une surface longitudinale pour former une feuille de mousse. La feuille est enroulée puis réticulée pour supprimer toutes les parois cellulaires résiduelles et arrondir les liaisons des pores internes de manière à élargir les ouvertures entre les cellules adjacentes. La feuille de mousse réticulée est déroulée puis revêtue de métal. Des panneaux peuvent être attachés bout à bout, fendus en boucle et réticulés. La mousse uniforme à revêtement métallique ainsi obtenue constitue un substrat de qualité supérieure pour les plaques de batteries et d~autres applications.

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