Formation of the macrostructure and porosity of the wearproof modified powder coatings
https://doi.org/10.31242/2618-9712-2019-24-2-11
Abstract
The macrostructure of wearproof powder coatings with the modifying additives of four types are investigated: corundum Al2O3, tungsten W, tantalum Ta, and a rare-earth concentrate from the Tomtorsky field in the Republic of Sakha (Yakutia). It is shown that a characteristic feature of the macrostructure of the modified powder coatings is their layered nature, which has a substantial effect on the formation of open porosity. The levels of open porosity of the modified powder coatings were estimated by menas of hydrostatic weighing. It is shown that the open porosity of the gas-thermal coating is also dependent on the technological modes of its preparation and on the concentrations of modifying agents. A theoretical distribution of the porosity of powdered coating on a smooth substrate is proposed on the basis of the statistical modeling of the formation of layered macrostructure of powder coatings.
About the Authors
Nikolai Fedorovich Struchkov
V.P. Larionov Institute of Physical and Technical Problems of the North, SB RAS
Russian Federation
Russian Federation
Struchkov Nikolai Fedorovich, Candidate of Technical Sciences, Senior Researcher, V.P. Larionov Institute of Physical and Technical Problems of the North, SB RAS, 1 Oktyabrskaya Str., Yakutsk, 677980, Russia, https://orcid.org/0000-0003-3078-0709, struchkov_n@rambler.ru
Gennadiy Georgievich Vinokurov
V.P. Larionov Institute of Physical and Technical Problems of the North, SB RAS
Russian Federation
Russian Federation
Vinokurov Gennadiy Georgievich, Candidate of Technical Sciences, Leading Researcher, V.P. Larionov Institute of Physical and Technical Problems of the North, SB RAS, 1 Oktyabrskaya St., Yakutsk, 677980, Russia, https://orcid.org/0000-0003-1454-6293, g.g.vinokurov@iptpn.ysn.ru.
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Review
For citations:
Struchkov N.F., Vinokurov G.G. Formation of the macrostructure and porosity of the wearproof modified powder coatings. Arctic and Subarctic Natural Resources. 2019;24(2):117-125. (In Russ.) https://doi.org/10.31242/2618-9712-2019-24-2-11
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