Patent ID: 6214474
Filing Date: 2001-04-10
Classification: C23C,Y02T,Y10S

Abstract:
An article comprised of a base body comprised of a high-melting metal selected from the group consisting of chromium, molybdenum, tungsten, tantalum, niobium, and their alloys or composite materials and an oxidation protective layer comprised of silicides or aluminides, wherein the silicides comprise at least 60 at. % silicon and 5-40 at. % of one or more elements selected from the group consisting of chromium, iron, titanium, zirconium, hafnium, boron and carbon, and the aluminides comprise at least 60 at. % of aluminum and 5-40 at. % of one or more elements selected from the group consisting of silicon, chromium, titanium, zirconium, hafnium, platinum, boron and carbon, and wherein a reaction barrier layer is placed between the base body and the oxidation protective layer and the oxidation protective layer is alloyed with one or more metals selected from the group consisting of molybdenum, niobium, tantalum, and hafnium in a total fraction of 2-35 at. %.