scholarly journals Isothermal Oxidation Behavior of Plasma Sprayed MCrAlY Coatings

10.5772/32731 ◽  
2012 ◽  
Author(s):  
Dowon Seo ◽  
Kazuhiro Ogaw
Keyword(s):  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Mcraly Coatings ◽  
Plasma Sprayed

Isothermal Oxidation Behavior of Supersonic Atmospheric Plasma-Sprayed Thermal Barrier Coating System

2013 ◽  
Vol 22 (7) ◽  
pp. 1201-1209 ◽  
Author(s):  
Yu Bai ◽  
Chunhua Ding ◽  
Hongqiang Li ◽  
Zhihai Han ◽  
Bingjun Ding ◽  
...  
Keyword(s):  
Thermal Barrier Coating ◽  
Oxidation Behavior ◽  
Isothermal Oxidation ◽  
Atmospheric Plasma ◽  
Thermal Barrier ◽  
Coating System ◽  
Thermal Barrier Coating System ◽  
Barrier Coating ◽  
Plasma Sprayed

NONDESTRUCTIVE IMPEDANCE SPECTROSCOPY EVALUATION OF THE BOND COAT OXIDATION IN THERMAL BARRIER COATINGS

2007 ◽  
Vol 14 (05) ◽  
pp. 935-943 ◽  
Author(s):  
L. YANG ◽  
Y. C. ZHOU ◽  
W. G. MAO ◽  
Q. X. LIU
Keyword(s):  
Impedance Spectroscopy ◽  
Thermal Barrier Coatings ◽  
Bond Coat ◽  
Equivalent Circuit Model ◽  
Isothermal Oxidation ◽  
Thermally Grown Oxide ◽  
Thermal Barrier ◽  
Air Plasma ◽  
Barrier Coatings ◽  
Plasma Sprayed

In this paper, the impedance spectroscopy technique was employed to examine nondestructively the isothermal oxidation of air plasma sprayed (APS) thermal barrier coatings (TBCs) in air at 800°C. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) were also used to characterize the microstructure evolution of TBCs. After oxidation, the thermally grown oxide (TGO), which was mainly composed of alumina as confirmed by EDX, formed at the upper ceramic coat/bond coat interface, the lower bond coat/substrate interface, and the bond coat. Impedance diagrams obtained from impedance measurements at room temperature were analyzed according to the equivalent circuit model proposed for the TBCs. Various observed electrical responses relating to the growth of oxides and the sintering of YSZ were explained by simulating the impedance spectra of the TBCs.

Isothermal Oxidation Behavior of Ru Modified Aluminide Coating on a Fourth Generation Single Crystal Superalloy

2006 ◽  
Vol 512 ◽  
pp. 111-116 ◽  
Author(s):  
Yuki Matsuoka ◽  
Kazuyoshi Chikugo ◽  
Takakazu Suzuki ◽  
Yasuo Matsunaga ◽  
Shigeji Taniguchi
Keyword(s):  
Phase Transformation ◽  
Oxidation Behavior ◽  
Coating Layer ◽  
Aluminide Coating ◽  
Isothermal Oxidation ◽  
Fourth Generation ◽  
Short Term ◽  
Cross Sectional ◽  
Local Oxidation ◽  
Sectional Analysis

Ru coating prior to aluminizing is one of the effective methods to reduce the harmful intermediate layer that forms under the coating (SRZ) on a 4th generation Ni-base SC superalloy. This study examined the short-term isothermal oxidation behavior of this Ru-modified coating at 1373 K in air. Surface observation by SEM showed that the scale becomes flat and uniform in comparison to simple aluminide coating. XRD and cross-sectional analysis results also showed that phase transformation from β-NiAl to γ’-Ni3Al seldom occurs in the Ru-modified coating layer leading to the prevention of local oxidation.

Cyclic Oxidation Behavior of Some Plasma-Sprayed Coatings in Na2SO4-60%V2O5 Environment

2006 ◽  
Vol 15 (6) ◽  
pp. 729-741 ◽  
Author(s):  
Harpreet Singh ◽  
Satya Prakash ◽  
Devendra Puri ◽  
D.M. Phase
Keyword(s):  
Cyclic Oxidation ◽  
Oxidation Behavior ◽  
Plasma Sprayed Coatings ◽  
Plasma Sprayed ◽  
Sprayed Coatings

Oxidation behavior of laser remelted plasma sprayed NiCrAlY and NiCrAlY–Al2O3 coatings

2001 ◽  
Vol 138 (1) ◽  
pp. 56-60 ◽  
Author(s):  
Y.N Wu ◽  
G Zhang ◽  
Z.C Feng ◽  
B.C Zhang ◽  
Y Liang ◽  
...  
Keyword(s):  
Oxidation Behavior ◽  
Plasma Sprayed

Synergistic effect of B and Y on the isothermal oxidation behavior of TiAl-Nb-Cr-V alloy

2018 ◽  
Vol 131 ◽  
pp. 376-385 ◽  
Author(s):  
X. Gong ◽  
R.R. Chen ◽  
H.Z. Fang ◽  
H.S. Ding ◽  
J.J. Guo ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Oxidation Behavior ◽  
Isothermal Oxidation
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