High-temperature oxidation and hot corrosion behavior of the Cr-modified aluminide coating obtained by a Thermal Diffusion process

2019 ◽  
Vol 6 (8) ◽  
pp. 086444
Author(s):  
Chong Li ◽  
Xiaojing Xu ◽  
Saifu Wang ◽  
Vitus Mwinteribo Tabie ◽  
Song Yang ◽  
...  
Keyword(s):  
High Temperature ◽  
Diffusion Process ◽  
Thermal Diffusion ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
High Temperature Oxidation ◽  
Aluminide Coating ◽  
Temperature Oxidation ◽  
Thermal Diffusion Process

scholarly journals Influence of Pre-Oxidation on High Temperature Oxidation and Corrosion Behavior of Ni-Based Aluminide Coating in Na2SO4 Salt at 1050°C

2021 ◽  
Vol 8 ◽  
Author(s):  
Qing Li ◽  
Defeng Zhang ◽  
Peng Song ◽  
Zhenhua Li ◽  
Ruixiong Zhai ◽  
...  
Keyword(s):  
Phase Composition ◽  
High Temperature ◽  
Oxide Scale ◽  
Hot Corrosion ◽  
Corrosion Test ◽  
High Temperature Oxidation ◽  
Aluminide Coating ◽  
Corrosion Properties ◽  
Temperature Oxidation ◽  
Oxidation And Corrosion

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.

High-temperature oxidation and hot corrosion behavior of Er2Sn2O7 + Inconel 625 composite

2019 ◽  
Vol 45 (14) ◽  
pp. 17620-17629
Author(s):  
Mukiri Soban Babu ◽  
M. Kiruba ◽  
N. Dharuman ◽  
S. Sundaravignesh ◽  
S. Sankarapandian ◽  
...  
Keyword(s):  
High Temperature ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
High Temperature Oxidation ◽  
Inconel 625 ◽  
Temperature Oxidation

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
Keyword(s):  
High Temperature ◽  
Hot Corrosion ◽  
High Temperature Oxidation ◽  
Temperature Oxidation

Cyclic Oxidation and Hot Corrosion Behavior of Nickel–Iron-Based Superalloy

2018 ◽  
Vol 37 (2) ◽  
pp. 173-180 ◽  
Author(s):  
D. Chellaganesh ◽  
M. Adam Khan ◽  
J. T. Winowlin Jappes ◽  
S. Sathiyanarayanan
Keyword(s):  
High Temperature ◽  
Corrosion Behavior ◽  
Hot Corrosion ◽  
Prolonged Exposure ◽  
Xrd Analysis ◽  
Mass Change ◽  
Temperature Oxidation ◽  
Turbine Engine ◽  
Nickel Iron ◽  
Iron Based

AbstractThe high temperature oxidation and hot corrosion behavior of nickel–iron-based superalloy are studied at 900 ° and 1000 °C. The significant role of alloying elements with respect to the exposed medium is studied in detail. The mass change per unit area was catastrophic for the samples exposed at 1000 °C and gradual increase in mass change was observed at 900 °C for both the environments. The exposed samples were further investigated with SEM, EDS and XRD analysis to study the metallurgical characteristics. The surface morphology has expressed the in situ nature of the alloy and its affinity toward the environment. The EDS and XRD analysis has evidently proved the presence of protective oxides formation on prolonged exposure at elevated temperature. The predominant oxide formed during the exposure at high temperature has a major contribution toward the protection of the samples. The nickel–iron-based superalloy is less prone to oxidation and hot corrosion when compared to the existing alloy in gas turbine engine simulating marine environment.

Carbide Fragmentation and Dissolution in a High-Carbon High-Chromium Steel Using Hot Rolling Process: Microstructure Evolution, Wear, High-Temperature Oxidation, and Chloride-Induced Corrosion Properties

CORROSION ◽  
10.5006/2749 ◽  
2018 ◽  
Vol 74 (9) ◽  
pp. 958-970 ◽  
Author(s):  
Majid Shahsanaei ◽  
Sadegh Pour-Ali ◽  
Ali-Reza Kiani-Rashid ◽  
Sannakaisa Virtanen
Keyword(s):  
High Temperature ◽  
Corrosion Behavior ◽  
Hot Rolling ◽  
High Temperature Oxidation ◽  
Rolling Process ◽  
High Carbon ◽  
Corrosion Properties ◽  
Temperature Oxidation ◽  
High Chromium ◽  
Hot Rolling Process

A series of hot rolling processes with different reduction percentages (10%, 30%, and 50%) were applied to a high-carbon high-chromium tool steel (2HCTS). Microstructural evolutions, wear behavior, high-temperature oxidation, and aqueous corrosion properties were investigated. The results revealed the breakage and dissolution of primary carbides and a uniform carbide distribution after the hot rolling process. It was proposed that the presence of higher amounts of dissolved chromium in the hot rolled samples leads to the formation of Cr-rich oxides with more protection and less porosity at high temperatures, as well as an improved corrosion behavior in 3.5 wt% NaCl solution. This improvement in the corrosion behavior is not at the expense of the degradation of wear resistance. Probable mechanisms for carbides dissolution are also discussed.

scholarly journals High Temperature Oxidation and Hot Corrosion of a Yttria ODS Alloy

1993 ◽  
Vol 42 (8) ◽  
pp. 514-520
Author(s):  
Isao Tomizuka ◽  
Yutaka Koizumi ◽  
Shizuo Nakazawa ◽  
Hideo Numata ◽  
Katsumi Ono ◽  
...  
Keyword(s):  
High Temperature ◽  
Hot Corrosion ◽  
High Temperature Oxidation ◽  
Temperature Oxidation ◽  
Ods Alloy
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