Semi finished product useful for producing metallic material, and as eg, filter for gases or liquids, catalyst support, catalyst, and heat exchanger, comprises organic fibers, binders, metallic fillers, and non metallic inorganic fillers

摘要

Semi-finished product comprises (a) organic fibers, (b) binders, (c) 15-90 vol.% metallic fillers, and (d) 0-15 vol.% non-metallic inorganic fillers. The total content of the fillers (c) and (d) is not 90 vol.% semi-finished product. The total volume of the is based on the solid volume of the semi-finished product. The metallic filler (c) comprises stainless steel with more than 20 wt.% chromium. Independent claims are also included for: producing a metallic material using the semi-finished product, comprising sintering the semi-finished product at a temperature higher than 1000[deg]C, infiltrating the semi-finished product with organic binders, preferably phenolic resins, or an inorganic binder, preferably with a silicate binder with subsequent thermal treatment at a temperature up to 300[deg]C, preferably up to 200[deg]C, infiltrating the semi-finished product with a hybrid polymer and or metal-organic polymer, preferably silane, siloxane or silazane with subsequent thermal treatment at a temperature up to 300[deg]C, preferably up to 200[deg]C with subsequent pyrolysis at temperatures up to 1600[deg]C, preferably up to 800[deg]C, or pyrolyzing the semi-finished product at a temperature up to 1200[deg]C, preferably up to 800[deg]C with subsequent sintering at a temperature up to 1600[deg]C, preferably up to 1000[deg]C; and the metallic material, which is obtained by the above mentioned method.