409 Evaluation of fatigue damage in thermal barrier coating by X-Ray method

2005 ◽  
Vol 2005.54 (0) ◽  
pp. 99-100
Author(s):  
Keisuke MATSUMOTO ◽  
Shutaro MACHIYA ◽  
Yoshiaki AKINIWA ◽  
Keisuke TANAKA
Keyword(s):  
Thermal Barrier Coating ◽  
Fatigue Damage ◽  
Thermal Barrier ◽  
Ray Method ◽  
X Ray ◽  
Barrier Coating

Hot-Corrosion Behavior of Modified YSZ Thermal Barrier Coating

2014 ◽  
Vol 492 ◽  
pp. 361-364
Author(s):  
Yi Wang ◽  
Li Jia Chen ◽  
Hong Li Suo ◽  
Yi Chen Meng
Keyword(s):  
Thermal Barrier Coating ◽  
Substrate Surface ◽  
Atmospheric Plasma ◽  
Thermal Barrier ◽  
X Ray Diffraction ◽  
X Ray ◽  
Abnormal Growth ◽  
Barrier Coating ◽  
Thermal Cycling Testing ◽  
Ysz Coating

A modified YSZ thermal barrier coating (TBC) was prepared by simultaneously depositing two components, NiCrAlY and YSZ, on nicked-based superalloy DZ125 via atmospheric plasma spraying. In this study, the sodium salt was deposited on substrate surface at the deposition rate of 3 mg/cm-2. After being heated at 950 °C for 50min, the specimens were cooled to ambient temperature within 10 min. The specimens were recoated after each 10 cycles. Subsequently, the corrosion products were analyzed via X-Ray diffraction and SEM. The results indicated that deterioration of traditional YSZ coating mainly resulted from the fluxing of thermal grown oxides (TGO). Conversely, abnormal growth of TGO and enrichment of molten salt around segmentation crack were not observed in the modified YSZ thermal barrier coating. Moreover, the modified YSZ-TBC exhibited higher thermal resistance than traditional YSZ-TBC in the thermal cycling testing.

scholarly journals X-Ray Study on Deformation Characteristics of Thermal Barrier Coating Films.

2001 ◽  
Vol 67 (660) ◽  
pp. 1325-1331 ◽  
Author(s):  
Kenji SUZUKI ◽  
Shutaro MACHIYA ◽  
Keisuke TANAKA ◽  
Yoshihisa SAKAIDA
Keyword(s):  
Thermal Barrier Coating ◽  
Thermal Barrier ◽  
Deformation Characteristics ◽  
Coating Films ◽  
X Ray ◽  
Barrier Coating

Thermal Fatigue Damage of Thermal Barrier Coating on Plate

2003 ◽  
Vol 2003 (0) ◽  
pp. 459-460
Author(s):  
Yasuhiro OHTAKE ◽  
Takeshi NAKAMURA ◽  
Nobuyuki SUZUMURA ◽  
Tadashi NATSUMURA
Keyword(s):  
Thermal Barrier Coating ◽  
Fatigue Damage ◽  
Thermal Fatigue ◽  
Thermal Barrier ◽  
Barrier Coating

An Investigation of Phase Crystallinity in Laser Modified Yttria Stabilized Zirconia (YSZ) Thermal Barrier Coating

2014 ◽  
Vol 611-612 ◽  
pp. 1601-1607
Author(s):  
Mohamed Suffian Reza ◽  
Syarifah Nur Aqida ◽  
Mohd Radzi Mohd Toff
Keyword(s):  
Surface Roughness ◽  
Thermal Barrier Coating ◽  
Pulse Repetition Frequency ◽  
Sample Surface ◽  
Yttria Stabilized Zirconia ◽  
Thermal Barrier ◽  
X Ray Diffraction ◽  
Stabilized Zirconia ◽  
X Ray ◽  
Barrier Coating

This paper presents laser surface modification process of plasma sprayed yttria stabilized zirconia (YSZ) thermal barrier coating (TBC) for enhanced hardness properties and low surface roughness. A 300W JK300HPS Nd: YAG laser was used to process YSZ TBC sample surface. The parameters selected for examination were laser power, pulse repetition frequency (PRF) and residence time. Micrographs of the TBC system were captured using EVO 15 Scanning Electron Microscope (SEM). Surface roughness was measured using 2-dimensional stylus profilometer. X-ray diffraction analysis (XRD) was conducted to measure phase crystallinity of the laser-modified coating surface. X-ray diffraction patterns were recorded in the 2θ range of 10 to 80° using Bruker D8 Advance system with 0.7Å wavelength from a copper source (~1.5Å). The laser modified surface exhibited higher crystallinity compared to the as-sprayed samples. The presence of tetragonal phase was detected in the as-sprayed and laser processed samples. The hardness properties of laser modified TBC increased 15% of the as-sprayed sample. These finding are significant to development of thermal barrier coating design optimization for enhanced surface properties of semi-solid forming die.

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