ALLOY PROTECTIVE LAYER AND COMPONENT

• Main Author: STAMM WERNER
• Format: Patent
• Language: English; Korean
• Published: 13.07.2020
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

높은 Cr 함량과 추가로 규소를 포함한 공지된 보호층들은 이용 동안 탄소의 영향 하에 추가로 취화되는 취화상을 형성한다. 본 발명에 따른 보호층은, 22% 내지 24%의 코발트(Co), 10.5% 내지 11.5%의 알루미늄(Al), 0.2% 내지 0.4%의 이트륨(Y), 및/또는 스칸듐 및 희토류의 원소들을 포함하는 군에서 선택된 하나 이상의 등가 금속, 즉 14% 내지 16%의 크롬(Cr), 선택적으로 0.3% 내지 0.9%의 탄탈, 니켈(Ni) 잔량의 조성을 보유한다. Alloy comprises 22-24, preferably 23 wt.% of cobalt, 14-16, preferably 15% of chromium, 10.5-11.5, preferably 11 wt.% of aluminum, 0.2-0.4, preferably 0.3 wt.% of at least one metal consisting of scandium and/or rare earth element, preferably yttrium, optionally 0.3-0.9, preferably 0.5 wt.% of tantalum and balance of nickel. Independent claims are included for: (1) a layer (7) for protecting a component (1, 120, 130, 155) against corrosion and/or oxidation, preferably at high temperatures comprising the alloy; and (2) the component, preferably the component of a gas turbine, where a substrate (4) of the component is based on nickel or cobalt, the protective layer is applied on the substrate and the protective layer is a ceramic heat insulation layer (10).