Journal ArticleDOI
Tribological and corrosive characteristics of electrochemical coatings based on cobalt and iron superalloys
Natalia Tsyntsaru,A. I. Dikusar,Henrikas Cesiulis,Jean-Pierre Celis,Zh. I. Bobanova,S. P. Sidel’nikova,S. S. Belevskii,Yu. S. Yapontseva,Oksana Bersirova,V. S. Kublanovskii +9 more
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TLDR
The tribological and corrosive characteristics of binary and ternary alloys electrodeposited from CoW, FeW, CoMoP, and CoWP citrate solutions are studied in this paper.Abstract:
The tribological and corrosive characteristics of binary and ternary alloys electrodeposited from CoW, FeW, CoMoP, and CoWP citrate solutions are studied. The tungsten content of CoW alloys reaches 31 at.% and of FeW alloys 34 at.%. The introduction of phosphorus into the alloys reduces the content of tungsten from 26.7 to 19.7 at.% (at 4.5 at.% P). The molybdenum content of CoMoP alloys is 0.7–1.0 at.% at 5 to 8 at.% P. The electrolytic tungsten alloys are nanocrystalline and subgrains are 4 to 7 nm in size. The nanohardness of tungsten-rich alloys (∼13 GPa) is comparable with that of electrolytic chromium coatings. The wear resistance of the deposited alloys is quite high and is commensurable with that of hard coatings such as TiB2, TiN, and TiAlN. The tribooxidation of FeW alloys in dry friction is revealed. The corrosion resistance of the coatings is similar to that for electrolytic chromium.read more
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Modern trends in tungsten alloys electrodeposition with iron group metals
Natalia Tsyntsaru,Natalia Tsyntsaru,Henrikas Cesiulis,Mikolaj Donten,Jordi Sort,Eva Pellicer,E. J. Podlaha-Murphy +6 more
TL;DR: In this article, the authors provide an overview of the works on electrodeposition of tungsten alloys with iron group metals, their properties and applications, and the adduced data are correlated with the compositions of electrodeposited alloys.
Journal ArticleDOI
Metal–Organic Framework-Derived CoWP@C Composite Nanowire Electrocatalyst for Efficient Water Splitting
Baicheng Weng,Corey R. Grice,Weiwei Meng,Lei Guan,Fenghua Xu,Yue Yu,Changlei Wang,Dewei Zhao,Yanfa Yan +8 more
TL;DR: In this article, a new hydrogen evolution nanowire electrocatalyst, consisting of S-doped CoWP nanoparticles embedded in S- and Ndoped carbon matrix (S-CoWP@(S,N)-C), which is in situ transformed from Hofmann-type (Co, W)-based metal-organic framework (MOF) nanowires, is reported.
Journal ArticleDOI
Cobalt based metal-organic frameworks and their derivatives for electrochemical energy conversion and storage
TL;DR: In this paper, relevant synthetic processes, morphologies and electrochemical performances of cobalt-based metal-organic framework composites and their derivatives for applications in electrocatalysis, rechargeable batteries and supercapacitors are reviewed and summarized.
Journal ArticleDOI
Structural, magnetic, and mechanical properties of electrodeposited cobalt–tungsten alloys: Intrinsic and extrinsic interdependencies
Natalia Tsyntsaru,Natalia Tsyntsaru,Henrikas Cesiulis,Eva Pellicer,Jean-Pierre Celis,Jordi Sort +5 more
TL;DR: In this paper, structural, magnetic, and mechanical properties of Co-W coatings galvanostatically electrodeposited from a citrate-borate bath are investigated. And the intrinsic characteristics of the coatings such as crystallite size or tungsten content are correlated with the extrinsic growth parameters, such as pH, complexes distribution, and current density.
Journal ArticleDOI
The effect of electrodeposition conditions and post-annealing on nanostructure of Co–W coatings
TL;DR: In this article, the effect of electrodeposition conditions in the direct (DC) and pulse (PC) current modes on tungsten content in the alloys and their structure was investigated.
References
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TL;DR: In this article, the authors present an overview of the mechanical properties of nanocrystalline metals and alloys with the objective of assessing recent advances in the experimental and computational studies of deformation, damage evolution, fracture and fatigue, and highlighting opportunities for further research.
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Amorphous and nanocrystalline materials for applications as soft magnets
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Electrodeposition of alloys
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Journal ArticleDOI
Effect of nanocrystalline grain size on the electrochemical and corrosion behavior of nickel
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