Journal ArticleDOI
A study of Ni3Al coating on carbon steel surface via the SHS casting route
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TLDR
In this paper, a nickel aluminide (Ni3Al) coating on a carbon steel surface was fabricated by the self-propagating high-temperature synthesis (SHS) casting route and the microstructure of the coating and bonding interface between the substrate and the coating, and the distribution of elements adjacent to the interface were analyzed by using electron probe microanalysis (EPMA).Abstract:
A nickel aluminide (Ni3Al) coating on a carbon steel surface was fabricated by the self-propagating high-temperature synthesis (SHS) casting route. Coating phases were determined by using X-ray diffraction (XRD). The microstructure of the coating and bonding interface between the substrate and the coating, and the distribution of elements adjacent to the interface, were analyzed by using electron probe microanalysis (EPMA). The microhardness of the coating was measured. The tribological properties of the coating at different elevated temperatures were investigated and the worn surfaces at different temperatures were analyzed by EPMA. The elemental chemical state of the worn surface was determined by using X-ray photoelectron spectroscopy (XPS). The results show that the coating was composed of Ni3Al phase, and that its microstructure was dense and pure. Elements had diffused mutually at both sides of the interface and a metallurgical bonding interface was formed. The heat of the reaction coarsened the grain size of the substrate near the interface. The hardness of the coating is higher than that of the substrate. Wear loss and friction coefficient of the coating vary with the testing temperature. The coating had a good resistance to oxidation at elevated temperature. Oxidation of the coating occurred as a result of friction at the temperature of 873 K. The mechanisms of combustion synthesis of Ni3Al coatings on carbon steel substrates are discussed in detail. It is pointed out that the combustion temperature and the wettability between the product of the reaction and the substrate are significant to obtain the coating.read more
Citations
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Journal ArticleDOI
Evaluation of the corrosion behaviour of plasma-sprayed Ni3Al coatings on steel in oxidation and molten salt environments at 900 °C
Buta Singh Sidhu,Satya Prakash +1 more
TL;DR: In this paper, Ni 3 Al coatings were obtained on boiler tube steels through a plasma spray process and they were used as a bond coat before applying Ni 3Al coatings.
Journal ArticleDOI
Some studies on hot corrosion performance of plasma sprayed coatings on a Fe-based superalloy
TL;DR: In this paper, hot corrosion studies were conducted on uncoated as well as plasma spray-coated superalloy specimens after exposure to molten salt at 900 °C under cyclic conditions.
Journal ArticleDOI
Studies on erosion behaviour of plasma sprayed coatings on a Ni-based superalloy
TL;DR: In this paper, NiCrAlY, Ni-20Cr and Ni3Al metallic coatings were deposited on a Ni-based superalloy (18.5Fe-19Cr-0.04C-5.13 (Ta+Cb)-balance Ni).
Journal ArticleDOI
Characterisations of plasma sprayed and laser remelted NiCrAlY bond coats and Ni3Al coatings on boiler tube steels
TL;DR: In this paper, the microhardness of the NiCrAlY and Ni3Al coatings were measured along the cross-section and a significant reduction in the hardness values has been observed after laser remelting.
Journal ArticleDOI
Electrodeposited Ni–Al composite coatings with high Al content by sediment co-deposition
Haifeng Liu,Weixing Chen +1 more
TL;DR: Sediment co-deposition (SCD) was adopted to develop Ni-Al particle composite coatings as discussed by the authors, which have much higher volume fraction of Al particles in coatings with low particle loading in bath than the conventional electrodeposited (CED) Ni−Al composites.
References
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Book
The friction and lubrication of solids
Frank Philip Bowden,David Tabor +1 more
TL;DR: Tabor and Bowden as mentioned in this paper reviewed the many advances made in this field during the past 36 years and outlined the achievements of Frank Philip Bowden, and reviewed the behavior of non-metals, especially elastomers; elastohydrodynamic lubrication; and the wear of sliding surfaces.
Journal ArticleDOI
Self-propagating high-temperature synthesis
J. Subrahmanyam,M. Vijayakumar +1 more
TL;DR: Self-propagating high-temperature synthesis (SHS) and processes based on SHS are currently being developed the world over for the production of powders and near-net shape components of advanced materials as discussed by the authors.
Journal ArticleDOI
Chemical aspects of ceramic tribology
T. E. Fischer,W. M. Mullins +1 more
TL;DR: In this article, the surface chemistry of ceramics is reviewed and related to their electronic structure, and tribochemical maps are proposed for the interaction with water and selected hydrocarbons.
Journal ArticleDOI
The resistance of nickel and iron aluminides to cavitation erosion and abrasive wear
TL;DR: In this paper, the abrasive wear and cavitation erosion resistance of several alloys based on the Intermetallic compounds Ni3Al and Fe3Al have been investigated, and it is suggested that the wear process causes temperature increases in the damage zone that are sufficient to cause the elevated temperature properties of the alloys to become dominant.
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