Effect of Hf addition in (Ni,Pt)Al bond coat on thermal cycling behavior of a thermal barrier coating system at 1100 °C

2020 ◽  
Vol 166 ◽  
pp. 108424 ◽  
Author(s):  
Chengyang Jiang ◽  
Shuai Li ◽  
He Liu ◽  
Zebin Bao ◽  
Jianqiang Zhang ◽  
...  
Keyword(s):  
Thermal Cycling ◽  
Thermal Barrier Coating ◽  
Bond Coat ◽  
Thermal Barrier ◽  
Coating System ◽  
Thermal Barrier Coating System ◽  
Barrier Coating ◽  
Hf Addition ◽  
Thermal Cycling Behavior ◽  
Cycling Behavior

scholarly journals Thermal cycling behaviour of plasma sprayed NiCr-Al-Co-Y2O3 bond coat in thermal barrier coating system

2019 ◽  
Vol 23 (Suppl. 5) ◽  
pp. 1789-1800 ◽  
Author(s):  
Aleksandar Vencl ◽  
Mihailo Mrdak
Keyword(s):  
Chemical Composition ◽  
Thermal Cycling ◽  
Thermal Barrier Coating ◽  
Bond Coat ◽  
Microstructural Analysis ◽  
Thermal Barrier ◽  
Coating System ◽  
Thermal Cycles ◽  
Thermal Barrier Coating System ◽  
Barrier Coating

The aim of this study was to investigate the thermal cycling behaviour of NiCr-Al-Co- Y O bond coating in thermal barrier coating system with ZrO -MgO as a top coating. 2 3 2 The coatings were deposited by atmospheric plasma spraying on stainless steel X15Cr13 (EN 1.4024) substrate. The used composite powder NiCr-Al-Co-Y O was mechanically 2 3 cladded, and the steel substrates were preheated to 160-180 ?C. The thermal cycling performance of the obtained bond coat and the effect of formed complex ceramic oxides of the Al O -Y O system were tested by heating to 1200 ?C and cooling in air to 2 3 2 3 160-180 ?C. The number of performed thermal cycles was 7, 32, and 79. The quality of the obtained coating, as well as its thermal cycling behaviour, was assessed through the microstructural analysis, microhardness and tensile bond strength measurements, and change in chemical composition and microhardness. The obtained results showed that the steel substrate, bond coat oxidation and interdiffusion at bond coat/substrate interface have a significant influence on changes in chemical composition and microhardness of the bond coat. The correlation between oxidation behaviour of NiCr- Al-Co-Y O bond coat and number of thermal cycles was also discussed.

Preoxidation of bond coat in IN-738LC/NiCrAlY/LaMgAl11O19 thermal barrier coating system

2018 ◽  
Vol 44 (18) ◽  
pp. 22080-22091 ◽  
Author(s):  
M.M. Khorramirad ◽  
M.R. Rahimipour ◽  
S.M.M. Hadavi ◽  
K. Shirvani
Keyword(s):  
Thermal Barrier Coating ◽  
Bond Coat ◽  
Thermal Barrier ◽  
Coating System ◽  
Thermal Barrier Coating System ◽  
Barrier Coating
Sign in / Sign up

Export Citation Format

Share Document