scholarly journals Prerequisites for obtaining wear-resistant metal coatings with a high-entropy structure by atmospheric plasma spraying, reflow, and hardening

2020 ◽  
Vol 939 ◽  
pp. 012030
Author(s):  
A M Kadyrmetov ◽  
D A Popov ◽  
E V Snyatkov ◽  
A A Plakhotin
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Metal Coatings ◽  
Wear Resistant ◽  
High Entropy ◽  
Entropy Structure

Investigations of Wettability of Wear Resistant Coatings Produced by Atmospheric Plasma Spraying

2017 ◽  
Vol 270 ◽  
pp. 230-235 ◽  
Author(s):  
Pavel Komarov ◽  
Ladislav Čelko ◽  
David Jech ◽  
Martin Papula ◽  
Karel Slámečka ◽  
...  
Keyword(s):  
Contact Angle ◽  
Plasma Spraying ◽  
Liquid Droplet ◽  
Critical Role ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Metallographic Analysis ◽  
Water Contact ◽  
Wear Resistant ◽  
Wear Resistant Coatings

Changes in fluids contact angle in the interaction with materials surface can play a critical role in enhancement of hydro-machine components and pipelines efficiency and/or service lifetime. However most nowadays used materials and/or coatings are made from polymers or ceramic polymer composites produced by highly sophisticated and/or very expensive techniques. Unfortunately there are a lack of mechanical properties. With the aim to study the role of the surface topography on the water contact angle changes, the representatives of wear resistant coatings (WC10Co4Cr, Cr2O3+5SiO2+3TiO2and Al2O3) were produced by means of atmospheric plasma spraying. Wettability of the coatings surface was studied by adding the liquid droplet on as sprayed, grinded and polished coating's surface by measuring the changes of its contact angle. To estimate the coatings phase composition and topography XRD technique and optical profilometer were used. The contact angle of water was measured by sessile droplet method. To obtain the complex information of the cross-sectional coatings microstructure the conventional metallographic analysis approaches and optical microscopy were also used.

scholarly journals Frictional Wear and Corrosion Behavior of AlCoCrFeNi High-Entropy Alloy Coatings Synthesized by Atmospheric Plasma Spraying

Entropy ◽  
2020 ◽  
Vol 22 (7) ◽  
pp. 740
Author(s):  
Yongkun Mu ◽  
Liangbo Zhang ◽  
Long Xu ◽  
Kondagokuldoss Prashanth ◽  
Nizhen Zhang ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Plasma Spraying ◽  
Corrosion Behavior ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
High Entropy Alloy ◽  
High Entropy ◽  
Frictional Wear ◽  
Wear And Corrosion ◽  
Wear And Corrosion Resistance

High-entropy alloy coatings (HEAC) exhibit good frictional wear and corrosion resistances, which are of importance for structure materials. In this study, the microstructure, surface morphology, hardness, frictional wear and corrosion resistance of an AlCoCrFeNi high-entropy alloy coating synthesized by atmospheric plasma spraying (APS) were investigated. The frictional wear and corrosion resistance of the coating are simultaneously improved with an increase of the power of APS. The influence of the APS process on the microstructure and mechanical behavior is elucidated. The mechanisms of frictional wear and corrosion behavior of the AlCoCrFeNi HEAC are discussed in detail.

scholarly journals Nano oxides reinforced high-entropy alloy coatings synthesized by atmospheric plasma spraying

2019 ◽  
Vol 7 (8) ◽  
pp. 312-319 ◽  
Author(s):  
Y.K. Mu ◽  
Y.D. Jia ◽  
L. Xu ◽  
Y.F. Jia ◽  
X.H. Tan ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
High Entropy Alloy ◽  
High Entropy
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