Hot corrosion behaviour of CNT-reinforced zirconium yttrium composite coating at elevated temperature

2020 ◽  
Vol 28 ◽  
pp. 1530-1539
Author(s):  
Sandeep Kumar ◽  
Rakesh Bhatia ◽  
Hazoor Singh
Keyword(s):  
Elevated Temperature ◽  
Composite Coating ◽  
Hot Corrosion ◽  
Corrosion Behaviour

Preparation and hot corrosion behaviour of a MCrAlY+AlSiY composite coating

2008 ◽  
Vol 50 (11) ◽  
pp. 3213-3220 ◽  
Author(s):  
S.M. Jiang ◽  
X. Peng ◽  
Z.B. Bao ◽  
S.C. Liu ◽  
Q.M. Wang ◽  
...  
Keyword(s):  
Composite Coating ◽  
Hot Corrosion ◽  
Corrosion Behaviour

scholarly journals Hot Corrosion Behaviour of Detonation Gun Sprayed Al2O3-40TiO2 Coating on Nickel Based Superalloys at 900°C

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
N. K. Mishra ◽  
Naveen Kumar ◽  
S. B. Mishra
Keyword(s):  
Elevated Temperature ◽  
Hot Corrosion ◽  
Elevated Temperatures ◽  
Corrosion Behaviour ◽  
Degradation Mechanism ◽  
Total Duration ◽  
Wide Range ◽  
Detonation Gun ◽  
Mechanism Of Failure ◽  
Corrosion Resistant Coatings

Hot corrosion is the major degradation mechanism of failure of boiler and gas turbine components. These failures occur because of the usage of wide range of fuels such as, coal and oil at the elevated temperatures. Nickel based superalloys having excellent mechanical strength and creep resistance at elevated temperature are used under such environment but they lack resistance to hot corrosion at high temperature. To overcome these problems hot corrosion resistant coatings are deposited on these materials. In the current investigation Al2O3-40%TiO2 powder has been deposited on Superni 718 and AE 435 superalloys by Detonation Gun method. The hot corrosion performance of Al2O3-40%TiO2 coated as well as uncoated Superni 718 and AE 435 alloys has been evaluated in aggressive environment Na2SO4-82%Fe2(SO4)3 under cyclic conditions at an elevated temperature of 900°C. The kinetics of the corrosion is approximated by weight change measurements made after each cycle for total duration of 50 cycles. Scanning electron microscopy was used to characterize the hot corrosion products. The coated samples imparted better hot corrosion resistance than the uncoated ones. The AE 435 superalloy performed better than Superni 718 for hot corrosion in a given environment.

Influence of Carbon on the Hot Corrosion Behaviour of Fe-Base Alloys

1989 ◽  
Vol 30 (9) ◽  
pp. 707-716 ◽  
Author(s):  
A. U. Malik ◽  
M. Ishaq ◽  
Sharif Ahmad ◽  
Sultan Ahmad
Keyword(s):  
Hot Corrosion ◽  
Corrosion Behaviour
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