| 摘要 |
FIELD: articles for direction of hot oxidizing gases with surfaces exposed to gas effect. SUBSTANCE: article is made of alloy containing, wt.%: chromium, 10-40; gallium, 1-20; aluminum, 0-20; silicon, 0-10; reactive element from group including yttrium, scandium and rare-earth elements, 0-2; hafnium, 0-5; manganese, 0-10; niobium, 0-4; platinum, 0-10; rhenium, 0-20; tantalum, 0-10; titanium, 0-5; tungsten, 0-12; zirconium, 0-2; and at least one element from group containing iron, cobalt and nickel. Alloy may be applied as protective layer to metal base, particularly, to base made from superalloy and, if required, it is coated with gas-permeable ceramic layer of columnar crystalline structure. Ceramic layer may be made of partially stabilized zirconium oxide. Article base is made of alloy containing, wt.%: carbon, 0.06-0.14; chromium, 10-20; cobalt, 6-11; molybdenum, 1-3; tungsten, 1-6; tantalum, 1-6; niobium, 0-2; aluminum, 1-6; titanium, 1-6; boron, 0-0.3; zirconium, 0-0.2; nickel, the balance. EFFECT: prolonged service life. 18 cl |
