Hochfeste, gesinterte, poröse metallische Verbundplatte und Verfahren zur Herstellung davon

摘要

A high strength spongy sintered metal composite sheet and a production method thereof are described. The present invention provides a high strength metal layer having continuous holes with a high porosity, and a high strength sintered metal dense layer having a porosity inferior to that of the first layer. The reinforcing layer is laminated on the first layer and has a thickness between 0.5 to 30% of the total thickness. The composite sheet can be used for producing a filter for high temperature use, a filter for an air cleaner and as electrode substrate of an alkaline secondary battery.