Phase composition and thin structure of the Zr-Y-O layer in Zr-Y-O/Si-Al-N multilayer coatings

2020 ◽  
Author(s):  
M. V. Fedorischeva ◽  
M. P. Kalashnikov ◽  
I. A. Bozhko ◽  
V. P. Sergeev
Keyword(s):  
Phase Composition ◽  
Multilayer Coatings ◽  
Thin Structure

scholarly journals Obtaining multilayer coatings by the detonation spraying method

2021 ◽  
Vol 5 (2) ◽  
pp. 148-154
Author(s):  
D.N. Kakimzhanov ◽  
B.K. Rakhadilov ◽  
D.B. Buitkenov ◽  
L.G. Zhurerova ◽  
M.K. Rakhadilov ◽  
...  
Keyword(s):  
Phase Composition ◽  
Multilayer Coating ◽  
Gas Mixture ◽  
Multilayer Coatings ◽  
Al2o3 Coating ◽  
Technological Parameters ◽  
Detonation Spraying ◽  
Al2o3 Phase ◽  
Degree Of Filling ◽  
Spraying Method

This work were studied the effect of technological parameters of detonation spraying on the phase composition and tribological characteristics on the bases of NiCr and Al2O3 coatings. As well as there was obtained and investigated multilayer coating on the bases of NiCr/NiCr- Al2O3/Al2O3 . It was determined that during detonation spraying the phase composition of Al2O3 coatings strongly depends on the degree of filling the borehole with a gas mixture. The a - Al2O3 -phase content in the coatings increases when the degree of filling is 63% and 54%. Only one CrNi3 phase is observed on the diffractograms and only increase of reflex intensity (020) at barrel filling by 58% is observed by sputtering on the bases of NiCr coatings in different degrees of barrel filling. The results of the coating nanohardness study showed that the hardness of the Al2O3 coating increases depending on the content of a- Al2O3 in it. Al2O3 coating has the maximum nanohardness values and is 16.42 GPa at the borehole is filled to 63%. The nanohardness of NiCr coating has the maximum values at barrel filling by 58% and consisting of 8.02 GPa.

Multilayer coatings based on niobium nitride

2021 ◽  
pp. 256-262
Author(s):  
V.P. Tabakov ◽  
A.V. Chikhranov ◽  
Ya.A. Dolzhenko
Keyword(s):  
Mechanical Properties ◽  
Phase Composition ◽  
Niobium Nitride ◽  
Multilayer Coatings

The results of study of the phase composition, parameters of structure, and mechanical properties of two-layer coatings based on niobium nitride are presented. The dependence of these characteristics on the design of the coating and the composition of the functional layers is shown.

Phase Composition and Thin Structure of Steel Surface after Plasma Electrolytic Carbonitriding

2020 ◽  
Vol 62 (10) ◽  
pp. 1794-1800
Author(s):  
N. A. Popova ◽  
A. I. Potekaev ◽  
E. L. Nikonenko ◽  
A. A. Klopotov ◽  
L. B. Bayatanova ◽  
...  
Keyword(s):  
Phase Composition ◽  
Steel Surface ◽  
Thin Structure ◽  
Plasma Electrolytic

Structure of Zr-Y-O Layer in Zr Y O / Si Al N-Based Multilayer Coatings

2014 ◽  
Vol 1013 ◽  
pp. 200-204
Author(s):  
Marina Fedorischeva ◽  
Viktor Sergeev ◽  
Mark Kalashnikov ◽  
Andrew Voronov ◽  
Natal'ya Popova
Keyword(s):  
Phase Composition ◽  
Chemical Composition ◽  
Multilayer Coatings ◽  
Multilayered Coatings ◽  
Equal Thickness ◽  
Nanocrystalline Si

TEM research of the structure of multilayered coatings consisting of alternating layers Si-Al-N and Zr-Y-O of equal thickness was carried out. It was shown that boundaries between different layers were the sharp enough, and the chemical composition in each layer was homogeneous. The phase composition of the layers on the basis of Zr-Y-O contained basically nanocrystalline ZrO2and the layers on the basis of Si-Al-N, contained partially amorphous, and partially nanocrystalline Si3N4.

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