ALLOY WITH GOOD CATALYTIC ACTIVITY AND METHOD OF PRODUCTION THEREOF

摘要

A metal alloy having good catalytic activity comprises a metallic refractory base containing carbon and at least one platinum type metal, and its surface has been subjected to an acid intergranular corrosion action causing microfissuration thereof and the appearance of microcrystals of platinoids. It is suitable for use as an exhaust catalyst. A preferred alloy has a composition of: wt% Fe 40-80 Pt group 0.02-2 C 0.02-01 Cr 0-40 Mi 0-40