Microstructure and oxidation performance of a γ-γ′ Pt-aluminide bond coat on directionally solidified superalloy CM-247LC

被引：10
作者：
Alam, Md Zafir [1 ]
Hazari, N. [1 ]
Das, Dipak K. [1 ]
机构：
[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India
来源：
BULLETIN OF MATERIALS SCIENCE | 2014年 / 37卷 / 06期
关键词：
Platinum aluminide bond coat; coating; cyclic oxidation; superalloy; microstructure; SINGLE-CRYSTAL SUPERALLOYS; HIGH-TEMPERATURE OXIDATION; NI-BASED SUPERALLOYS; CYCLIC OXIDATION; DEGREES-C; PLATINUM; BEHAVIOR; DEGRADATION; ADHESION; SYSTEMS;
D O I：
10.1007/s12034-014-0110-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure of a Pt-modified gamma-gamma' bond coat on CM-247LC Ni-base superalloy has been examined and its cyclic oxidation performance at 1100 A degrees C in air is comparatively evaluated with that of a conventional beta-(Ni, Pt)Al bond coat. The gamma-gamma' bond coat was effective in imparting oxidation resistance to the CM-247LC alloy for about 100 h, whereas the beta coating imparted oxidation resistance for significantly longer duration of about 1000 h. The nature of surface damage that occurred to the gamma-gamma' coating during oxidation has been compared with that reported in the case of beta coating.
引用
收藏
页码：1551 / 1561
页数：11
相关论文
共 35 条
[1]  
Alam M Z, 2010, METALL MATER TRANS A, V42, P4064
[2]   Effect of cyclic oxidation on the tensile behavior of directionally solidified CM-247LC Ni-based superalloy at 870 °C [J].
Alam, Md Zafir ;
Chatterjee, D. ;
Venkataraman, B. ;
Varma, Vijay K. ;
Das, Dipak K. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (23) :6211-6218
[3]   INFLUENCE OF SMALL PT ADDITIONS ON AL2O3 SCALE ADHERENCE [J].
ALLAM, IM ;
AKUEZUE, HC ;
WHITTLE, DP .
OXIDATION OF METALS, 1980, 14 (06) :517-530
[4]   Comparison of inward and outward grown Pt modified aluminide diffusion coatings on a Ni based single crystal superalloy [J].
Angenete, J ;
Stiller, K .
SURFACE & COATINGS TECHNOLOGY, 2002, 150 (2-3) :107-118
[5]  
Bose Sudhangshu, 2007, HIGH TEMPERATURE COA, P71
[6]   Degradation of the platinum aluminide coating on CMSX4 at 1100 degrees C [J].
Chen, JH ;
Little, JA .
SURFACE & COATINGS TECHNOLOGY, 1997, 92 (1-2) :69-77
[7]   Characterization and modeling of a martensitic transformation in a platinum modified diffusion aluminide bond coat for thermal barrier coatings [J].
Chen, MW ;
Glynn, ML ;
Ott, RT ;
Hufnagel, TC ;
Hemker, KJ .
ACTA MATERIALIA, 2003, 51 (14) :4279-4294
[8]   Formation of secondary reaction zone in ruthenium bearing nickel based single crystal superalloys with diffusion aluminide coatings [J].
Das, D. K. ;
Gleeson, B. ;
Murphy, K. S. ;
Ma, S. ;
Pollock, T. M. .
MATERIALS SCIENCE AND TECHNOLOGY, 2009, 25 (02) :300-308
[9]  
Das D K, 2000, J MET, pe52
[10]   High temperature oxidation behaviour of directionally solidified nickel base superalloy CM-247LC [J].
Das, DK ;
Singh, V ;
Joshi, SV .
MATERIALS SCIENCE AND TECHNOLOGY, 2003, 19 (06) :695-708
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