Formation of the diffusion barrier at the interface of Cr20Ni80 alloy - Ni-Cr-Al coating

Шморгун, В. Г.; Богданов, А. И.; Taube, Aleksandr O.; Гуревич, Л. М.

doi:10.1088/1757-899x/450/3/032026

Cited by 2 publications

(1 citation statement)

References 9 publications

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“…Special attention has been paid to the deposition of composite ceramic, metal-ceramic, and bio-ceramic coatings [10][11][12]. MCrAl coatings (where M = Ni, Co or both) are of particular interest from the point of view of wear and corrosion resistance, but the strength and plasticity of such coatings must be assured as a function of the substrate material [13][14][15][16]. MCrAlbased coatings are widely used as heat-protective coatings that form a protective oxide layer during high-temperature exploitation.…”

Section: Introductionmentioning

confidence: 99%

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

et al. 2021

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In this paper, Ni–Cr–Al coatings were deposited using the detonation spraying method. The aim was to investigate how technological parameters influence coating structure formation, phase composition and tribological performances. We observed that the degree to which the barrel is filled with an O2/C2H2 gas mixture strongly influences the chemical composition of manufactured coatings. High degrees of barrel filling led to a decrease in aluminum content in the coating. Filling degrees of 40% and 50% produced sprayed coatings in which only Ni–Cr phases could be found. When the filling degree was reduced up to 25%, Ni–Al phases began to form in the sprayed coatings. Gradient Ni–Cr–Al coatings were produced by gradually reducing the filling degree from 50% to 25%. These coatings are characterized by Ni–Cr near the substrate level with Ni–Cr and Ni–Al phases at higher levels. The results obtained confirm that gradient Ni–Cr–Al coatings exhibit high hardness as well as good wear resistance.

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Section: Introductionmentioning

confidence: 99%

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

et al. 2021

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Structure and phase composition transformation in Cr20Ni80 + Ni₂Al₃ + CrAl₇ layered coating under thermal effect

Шморгун

Богданов

Taube

et al. 2019

IOP Conf. Ser.: Mater. Sci. Eng.

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The thermal stability of the Cr20Ni80 / (Ni2A13 + CrAl7) layered coating on Ml copper substrate was studied. It is found, that the sequence of phase transformations in layered coating during the heat treatment in temperature range of 700-1000 °C is Ni2Al3 + CrAl7 → Ni2Al3(Cr) + NiAl(Cr) → NiAl(Cr). It is shown, that an increase in temperature and duration of thermal effect leads to the alignment of Al, Ni and Cr content over the coating thickness due to the diffusion redistribution of elements and to the formation of a secondary reaction zone with a high chromium content.

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Formation of the diffusion barrier at the interface of Cr20Ni80 alloy - Ni-Cr-Al coating

Cited by 2 publications

References 9 publications

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

Structure and phase composition transformation in Cr20Ni80 + Ni₂Al₃ + CrAl₇ layered coating under thermal effect

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Formation of the diffusion barrier at the interface of Cr20Ni80 alloy - Ni-Cr-Al coating

Cited by 2 publications

References 9 publications

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

Structure and Tribological Properties of Ni–Cr–Al-Based Gradient Coating Prepared by Detonation Spraying

Structure and phase composition transformation in Cr20Ni80 + Ni2Al3 + CrAl7 layered coating under thermal effect

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Structure and phase composition transformation in Cr20Ni80 + Ni₂Al₃ + CrAl₇ layered coating under thermal effect