Oxidation behavior of HVOF sprayed Ni-5Al coatings deposited on Ni- and Fe-based superalloys under cyclic condition

被引:35
作者
Mahesh, R. A. [1 ]
Jayaganthan, R. [1 ]
Prakash, S. [1 ]
机构
[1] Indian Inst Technol Roorkee, Dept Met & Mat Engn, Roorkee 247667, Uttar Pradesh, India
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 475卷 / 1-2期
关键词
superalloy; oxidation; coating; HVOF; Ni-5Al; MICROSTRUCTURE; PERFORMANCE;
D O I
10.1016/j.msea.2007.04.108
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Ni-5Al coating was obtained on three superalloy substrates viz. Superni 76, Superni 750 and Superfer 800 using high velocity oxy-fuel (HVOF) spray process. Oxidation studies were carried out on both bare and coated superalloy substrates in air at 900C for 100 cycles. The weight change was measured at the end of each cycle and observed that the weight gain was high in Superni 750 alloy when compared to Supeni 76 and Superfer 800. A nearly parabolic oxidation behavior was observed for Ni-5Al coated Superni 750 and Superfer 800 alloys but a Ni-5Al coated Superni 76 substrate showed a slight deviation. The scale was analysed using X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray analysis (EDAX) and electron probe microanalysis (EPMA). The coating increased the oxidation resistance for all the alloy substrates at 900C. Among the three-coated superalloys, Superfer 800 substrate has shown the best resistance to oxidation. The protective nature of the Ni-5Al coated superalloys was due to the formation of protective oxide scales such as NiO, Al2O3 and Cr2O3. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:327 / 335
页数:9
相关论文
共 20 条
[1]   Long-term oxidation tests on a Re-containing MCrAlY coating [J].
Beele, W ;
Czech, N ;
Quadakkers, WJ ;
Stamm, W .
SURFACE & COATINGS TECHNOLOGY, 1997, 94-5 (1-3) :41-45
[2]  
BYRNES L, 1994, 1994 THERMAL SPRAY INDUSTRIAL APPLICATIONS, P39
[3]   Isothermal oxidation of air plasma spray NiCrAlY bond coatings [J].
Choi, HS ;
Yoon, B ;
Kim, HJ ;
Lee, CH .
SURFACE & COATINGS TECHNOLOGY, 2002, 150 (2-3) :297-308
[4]   Microstructural analysis of the role of rhenium in advanced MCrAlY coatings [J].
Czech, N. ;
Schmitz, F. ;
Stamm, W. .
Surface and Coatings Technology, 1995, 76-77 (1 -3 pt 1) :28-33
[5]   The corrosion behavior and microstructure of high-velocity oxy-fuel sprayed nickel-base amorphous/nanocrystalline coatings [J].
Dent, AH ;
Horlock, AJ ;
McCartney, DG ;
Harris, SJ .
JOURNAL OF THERMAL SPRAY TECHNOLOGY, 1999, 8 (03) :399-404
[6]   Mechanisms of oxidation and its role in microstructural evolution of metallic thermal spray coatings - Case study for Ni-Al [J].
Deshpande, S ;
Sampath, S ;
Zhang, H .
SURFACE & COATINGS TECHNOLOGY, 2006, 200 (18-19) :5395-5406
[7]  
FUKUTOME H, 1995, P 14 INT THERM SPRAY, P21
[8]  
GOWARD WH, 1980, JOM-J MIN MET MAT S, V32, P32
[9]   Oxidation of NiAl and FeAl [J].
Grabke, HJ .
INTERMETALLICS, 1999, 7 (10) :1153-1158
[10]  
ILAVSKY J, 2000, P INT THERM SPRAY C, P449