High-temperature oxidation and hot corrosion of Cr2AlC

2007 ◽  
Vol 55 (18) ◽  
pp. 6182-6191 ◽  
Author(s):  
Z.J. Lin ◽  
M.S. Li ◽  
J.Y. Wang ◽  
Y.C. Zhou
1993 ◽  
Vol 42 (8) ◽  
pp. 514-520
Author(s):  
Isao Tomizuka ◽  
Yutaka Koizumi ◽  
Shizuo Nakazawa ◽  
Hideo Numata ◽  
Katsumi Ono ◽  
...  

2021 ◽  
Vol 8 ◽  
Author(s):  
Qing Li ◽  
Defeng Zhang ◽  
Peng Song ◽  
Zhenhua Li ◽  
Ruixiong Zhai ◽  
...  

Aluminide coating is prepared on K438 Ni-based superalloy by pack cementation. The hot corrosion test of as-received and pre-oxidation aluminide coating in Na2SO4 salt are carried out at 1050°C. The coating morphologies, phase composition, and corrosion products are characterized by XRD, SEM, EDS, and TEM. The conclusion is that the pre-oxidation aluminide coating has excellent hot corrosion properties. After hot corrosion, the oxide scale of pre-oxidation aluminide coating is the thinnest and maintains good integrity. However, the oxide scale of as-received aluminide coating fluctuates greatly and there are corrosion cavities. CrS is formed in the alloy immediately below the oxide scale for the two coating systems.


2012 ◽  
Vol 472-475 ◽  
pp. 395-399
Author(s):  
Jia Hui Qu ◽  
Cean Guo ◽  
Jian Zhang

Abstract: NiCoCrAlYSiHf coatings have been prepared by arc ion plating (AIP) on CrNi3MoVA steel ,which their microstructure and isothermal oxidation behavior at 950°C studied using SRD,SEM and EDAX. The results indicate that NiCoCrAlYSiHf coatings substantially increase the high-temperature oxidation resistance of CrNi3MoVA steel and the oxidation process was retarded mainly by the presence of α-Al2O3 oxide scale on the coating. Meanwhile, the major diffusion occured between the substrate element Fe and the coating element Co while Cr mainly distributed in the coating.


2003 ◽  
Vol 426-432 ◽  
pp. 4561-4566 ◽  
Author(s):  
Yoshinori Murata ◽  
Md. Moniruzzaman ◽  
Masahiko Morinaga ◽  
Ryokichi Hashizume ◽  
A. Yoshinari

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