Effect of Nanocrystallization on Hot Corrosion Behavior of K38G Alloy with Sulfate Deposit at 900°C

2004 ◽  
Vol 461-464 ◽  
pp. 153-160
Author(s):  
Shu Jiang Geng ◽  
Sheng Long Zhu ◽  
Fu Hui Wang ◽  
Wei Tao Wu
Keyword(s):  
Corrosion Behavior ◽  
Hot Corrosion ◽  
K38g Alloy

Hot corrosion behavior of a Si-Y co-deposition coating on a Ti2AlNb based alloy in NaCl-Na2SO4 mixture

2021 ◽  
pp. 127282
Author(s):  
Jiayi Xiang ◽  
Faqin Xie ◽  
Xiangqing Wu ◽  
Shaoqing Wang ◽  
Lang Li
Keyword(s):  
Corrosion Behavior ◽  
Hot Corrosion

Hot corrosion behavior of plasma sprayed FeCrNiC and FeCrNiC/Cenosphere coatings on ASTM-SA213-T22 steel

2021 ◽  
Author(s):  
S. Hanumanthlal ◽  
C. Siddaraju ◽  
M.R. Ramesh ◽  
H.P. Thirtha Prasada ◽  
B. Somasundaram
Keyword(s):  
Corrosion Behavior ◽  
Hot Corrosion ◽  
Plasma Sprayed

Corrosion behavior of new type Co-based superalloys with different Ni contents

2017 ◽  
Vol 35 (6) ◽  
pp. 455-462 ◽  
Author(s):  
Bo Gao ◽  
Lei Wang ◽  
Yang Liu ◽  
Xiu Song ◽  
Shu-Yu Yang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
Corrosion Layer ◽  
Corrosion Process ◽  
Corrosion Properties ◽  
Oxidation Processes ◽  
Ni Content ◽  
Ni Addition ◽  
New Type

AbstractThe corrosion properties of γ′-strengthened Co-xNi-Al-W-Cr (where x=15, 20, 25, and 30 at.%) superalloys were investigated in the mixture of 75 wt.% Na2SO4+25 wt.% NaCl at 900°C. The results showed that the corrosion behavior is associated with both sulfuration and oxidation processes. It was demonstrated that increasing the addition of Ni effectively promoted the formation of continuous Al2O3 scales, so that the hot corrosion resistance could be improved. When Ni content is more than 20 at.%, a large amount of Ni3S2 precipitates during the corrosion process. Sulfuration can destroy the integrity of the corrosion layer and increase the activity of oxygen. In this way, the internal oxidation of the alloys becomes more serious. Therefore, it is recommended that the optimum Ni addition is about 20 at.% for new type Co-Ni-Al-W-Cr superalloys.

Hot Corrosion Behavior of YSZ and CaZrO3/YSZ Composite Thermal Barrier Coatings in Contact with 50V2O5 + 50Na2SO4 Salts

2017 ◽  
Vol 26 (5) ◽  
pp. 913-928 ◽  
Author(s):  
Noveed Ejaz ◽  
Liaqat Ali ◽  
Furqan Ahmed ◽  
Khalid Mahmood Ghauri ◽  
A. Nusair Khan
Keyword(s):  
Thermal Barrier Coatings ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
Thermal Barrier ◽  
Barrier Coatings
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