High-temperature oxidation resistance, mechanical and wear resistance properties of Ti(C,N)-based cermets with Al0.3CoCrFeNi high-entropy alloy as a metal binder

2020 ◽  
Vol 815 ◽  
pp. 152486 ◽  
Author(s):  
Yihang Fang ◽  
Nan Chen ◽  
Guoping Du ◽  
Mengxian Zhang ◽  
Xianrui Zhao ◽  
...  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
High Entropy Alloy ◽  
Temperature Oxidation ◽  
High Entropy ◽  
Metal Binder

scholarly journals Effect of microalloying with silicon on high temperature oxidation resistance of novel refractory high-entropy alloy Ta-Mo-Cr-Ti-Al

2017 ◽  
Vol 35 (1-3) ◽  
pp. 168-176 ◽  
Author(s):  
Franz Müller ◽  
Bronislava Gorr ◽  
Hans-Jürgen Christ ◽  
Hans Chen ◽  
Alexander Kauffmann ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
High Entropy Alloy ◽  
Temperature Oxidation ◽  
High Entropy

scholarly journals Microstructure and Composition Evolution of a Fused Slurry Silicide Coating on MoNbTaTiW Refractory High-entropy Alloy in High-temperature Oxidation Environment

2020 ◽  
Author(s):  
Jiesheng Han ◽  
Bo Su ◽  
Junhu Meng ◽  
Aijun Zhang ◽  
Youzhi Wu
Keyword(s):  
High Temperature ◽  
Oxide Layer ◽  
Oxidation Resistance ◽  
Silicon Content ◽  
High Temperature Oxidation ◽  
High Entropy Alloy ◽  
Silicide Coating ◽  
Temperature Oxidation ◽  
High Entropy ◽  
Silicide Layer

The poor oxidation resistance of refractory high-entropy alloys (RHEAs) is a major obstacle for their use in high-temperature engineering applications. Anti-oxidation coating technology is an effective method for improving the oxidation resistance. In this paper, the Si-20Cr-20Fe coating was prepared on MoNbTaTiW RHEA by a fused slurry method. The microstructural evolution and compositions of the silicide coating under high-temperature oxidation environment were studied. The results show that the silicide coating could effectively prevent the oxidation of the MoNbTaTiW RHEA. The initial silicide coating had a double-layer structure; a high silicon-content layer mainly composed of MSi2 as the outer layer and a low silicon-content layer mainly contained M5Si3 as the inner layer. Under high-temperature oxidation conditions, the silicon element diffused from the silicide coating to the RHEA substrate while the oxidation of the coating occurred. After oxidation, the coating was composed of an outer oxide layer and an inner silicide layer. The silicide layer moved toward the inside of the substrate, led to the increase of its thickness. Compared with the initial silicified layer, its structure did not change significantly. The structure and compositions of the oxide layer on the outer surface strongly depended on the oxidation temperature. This paper provides a strategy for protecting RHEAs from oxidation at high-temperature environments.

Synthesis of Ni-CeO2 Nanocomposite Coatings by Electroforming

2012 ◽  
Vol 248 ◽  
pp. 48-53
Author(s):  
Ning Song Qu
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Weight Percent ◽  
Ceo2 Nanoparticles ◽  
Nano Particles ◽  
Nanocomposite Coatings ◽  
Temperature Oxidation ◽  
Nickel Coatings

In this paper, the effect of CeO2 nanoparticles content in the bath on the weight percent of CeO2 particles, morphology, texture, and high temperature oxidation resistance of the nanocomposite coatings was examined. With a rise in the loadings of CeO2 particles in the bath from 10 gl-1 to 40 gl-1, the CeO2 particles weight percent in the nanocomposite coatings gradually increases. Further increased the loadings of particles in the bath to 50 gl-1, the weight percent reversely reduces. The maximum of CeO2 nano particles weight percent in the nanocomposite coatings is 4.98 wt% obtained at current density of 3 Adm-2 from the bath containing 40 gl-1 CeO2 particles. The high temperature oxidation resistance of Ni-CeO2 nanocomposite coatings significantly rise compared with that of bare nickel coatings, and enhanced with a rise in the loadings of CeO2 nano particles from 10 gl-1 to 30 gl-1. The wear resistance of deposits is also consist with the nanoparticles content in the bath。

scholarly journals High temperature oxidation of non equi-atomic Al5Cr12Fe35Mn28Ni20 high entropy alloy

2021 ◽  
Author(s):  
Mayar M. Ali ◽  
Sanaa Said Abd Elmoamen ◽  
Mohamed A.H. Gepreel ◽  
Hafiz A. Ahmed ◽  
Fawzi A. Elrefaie
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
High Entropy Alloy ◽  
Temperature Oxidation ◽  
High Entropy
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