Effect of Refractory Ceramic Coating on the Thermal Oxidation Resistance of Inconel 617 Alloy

2007 ◽  
Vol 345-346 ◽  
pp. 1023-1026
Author(s):  
Hyun Cho ◽  
D.M. Lee ◽  
K.H. Bang ◽  
B.W. Lee
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Resistance ◽  
Oxidation Behavior ◽  
Ceramic Coating ◽  
Temperature Stability ◽  
Surface Region ◽  
Wear Loss ◽  
Refractory Ceramic ◽  
Inconel 617 ◽  
Main Component

Effect of ceramic coating (TiN, TiCN, TiAlN or Al2O3) on the wear resistance and thermal oxidation behavior of Inconel 617 alloy (Ni-22Cr-12.5Co-9Mo-1Al) have been examined. TiAlN and Al2O3 coatings showed lower wear loss than bare Inconel 617 and the enhanced thermal oxidation resistance at 1000oC by suppressing the inhomogeneous formation of Cr2O3 at the surface region through the reaction between oxygen and grain boundary-diffused Cr, one of the main component of Inconel 617 alloy, while TiN and TiCN coatings showed poor temperature stability at the temperature region above 600 oC.

Oxidation behavior of plasma-sprayed stabilized zirconia/Al coated polymer matrix composites

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 72331-72339 ◽  
Author(s):  
Wenzhi Huang ◽  
Haifeng Cheng ◽  
Yongjiang Zhou
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Resistance ◽  
Plasma Spraying ◽  
Polymer Matrix ◽  
Oxidation Behavior ◽  
Polymer Matrix Composites ◽  
Matrix Composites ◽  
Stabilized Zirconia ◽  
Plasma Sprayed

Stabilized zirconia/Al coatings were deposited on polymer matrix composites (PMCs) via plasma spraying, and exhibited good thermal oxidation resistance.

High temperature stability of aluminide-coated Inconel 617

2015 ◽  
Vol 29 (06n07) ◽  
pp. 1540007
Author(s):  
Hyun Cho ◽  
Byeong Woo Lee
Keyword(s):  
Thermal Stability ◽  
Wear Resistance ◽  
Barrier Layer ◽  
Temperature Stability ◽  
Surface Region ◽  
High Temperature Stability ◽  
Helium Atmosphere ◽  
Inconel Alloy ◽  
Diffusion Coatings ◽  
Inconel 617

Aluminum diffusion coatings were applied to the Inconel 617 by a pack cementation. The effect of coatings on the thermal stability and wear resistance of the Inconel alloy after heat-treatment under an air and a helium atmosphere at 1000°C, 48 h has been studied. The aluminide-coated Inconel specimens are prepared at 850°C and 1000°C for 1 h. An aluminiding layer indexed as AlxNi1-x(x = 0.4–0.6) was formed near the surface region and it played a role as a barrier layer against the surface diffusion of Cr . The thin Cr2O3film formed in situ on the alloy surface is protective inhibiting further oxidation at moderate temperatures. As the temperature increases further, the thermal stability of the Inconel alloy is limited by the instability of the Cr2O3scale. The aluminide-coated Inconel 617 samples showed the better performances, the enhanced thermal stability and improved wear resistance, most likely due to the barrier layer formation with the reduced amount of Cr2O3scale formation.

scholarly journals Oxidation behavior of non-stoichiometric (Zr,Hf,Ti)Cx carbide solid solution powders in air

2021 ◽  
Author(s):  
Huilin Lun ◽  
Yi Zeng ◽  
Xiang Xiong ◽  
Ziming Ye ◽  
Zhongwei Zhang ◽  
...  
Keyword(s):  
Solid Solution ◽  
Oxidation Resistance ◽  
Oxidation Behavior ◽  
Group Iv ◽  
Hypersonic Vehicles ◽  
Metal Carbides ◽  
Initial Oxidation ◽  
Plasma Sintering ◽  
Spark Plasma ◽  
Kinetics Of

AbstractMulti-component solid solutions with non-stoichiometric compositions are characteristics of ultra-high temperature carbides as promising materials for hypersonic vehicles. However, for group IV transition-metal carbides, the oxidation behavior of multi-component non-stoichiometric (Zr,Hf,Ti)Cx carbide solid solution has not been clarified yet. The present work fabricated four kinds of (Zr,Hf,Ti)Cx carbide solid solution powders by free-pressureless spark plasma sintering to investigate the oxidation behavior of (Zr,Hf,Ti)Cx in air. The effects of metallic atom composition on oxidation resistance were examined. The results indicate that the oxidation kinetics of (Zr,Hf,Ti)Cx are composition dependent. A high Hf content in (Zr,Hf,Ti)Cx was beneficial to form an amorphous Zr-Hf-Ti-C-O oxycarbide layer as an oxygen barrier to enhance the initial oxidation resistance. Meanwhile, an equiatomic ratio of metallic atoms reduced the growth rate of (Zr,Hf,Ti)O2 oxide, increasing its phase stability at high temperatures, which improved the oxidation activation energy of (Zr, Hf, Ti)Cx.

Thermal Oxidation Behavior of TiAlCrSiN and AlCrTiN Films on HastelloyX

2012 ◽  
Vol 486 ◽  
pp. 400-405 ◽  
Author(s):  
K. Tuchida ◽  
Kessaraporn Wathanyu ◽  
S. Surinphong
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Behavior ◽  
Oxide Scales ◽  
Surface Appearance ◽  
Turbine Engine ◽  
Testing Conditions ◽  
Working Temperature ◽  
Fuel Nozzle ◽  
Higher Temperature ◽  
Scratch Tests

In this paper, the thermal oxidation behavior of TiAlCrSiN and AlCrTiN films coated on hastelloyX substrate, typically used for fuel nozzle in gas turbine engine application, have been studied. The thermal oxidation behavior at 950, 1050 and 1150 °C in controlled atmosphere were investigated. The surface appearance, microstructure, chemical composition and adhesion of films were investigated. The thermal oxidations were observed in all testing conditions showing oxide films at the surface with thicker oxide film at higher temperature. However, spalling of oxide scales was found in both coated and uncoated specimens at 1150°C suggesting the maximum working temperature of < 1150 °C for turbine engine applications. The critical loads corresponding to the full delamination of the thermal oxidation coated specimens were found to be higher than the non-thermal oxidation specimens. The effect of thermal oxidation on damage patterns during scratch tests, i.e. less chipping and cracking for thermal oxidation specimen, were also observed.

Thermal oxidation behavior of hexagonal BC2N

2009 ◽  
Vol 60 (1) ◽  
pp. 56-59 ◽  
Author(s):  
Qianku Hu ◽  
Qinghua Wu ◽  
Guang Sun ◽  
Xueling Xing ◽  
Julong He ◽  
...  
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Behavior

Thermal oxidation behavior of ceramic-coated Ni–Cr-base superalloys

2008 ◽  
Vol 202 (22-23) ◽  
pp. 5625-5628 ◽  
Author(s):  
H. Cho ◽  
D.M. Lee ◽  
J.H. Lee ◽  
K.H. Bang ◽  
B.W. Lee
Keyword(s):  
Thermal Oxidation ◽  
Oxidation Behavior
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