Registration Number
0224U033193,
(0122U002140)
, R & D reports
Title
Development of metal oxide coatings on titanium alloys with high wear resistance and tribological characteristics
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Розроблення металооксидних покриттів на титанових сплавах із підвищеною зносостійкістю та трибологічними характеристиками
Head
Pohreliuk Iryna M., Доктор технічних наук
Registration Date
20-12-2024
Organization
Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine
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Modification of the surface of titanium alloys by combining diffusion saturation of elements (nitrogen, carbon, oxygen) and aluminum with electrophysical methods (plasma electrolyte and electrospark treatments) to increase the wear resistance and tribological characteristics of titanium alloys.
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The main results of the work are conducted the thermodynamic analysis of the reactions of interaction of electrolyte plasma with pre-nitrided and carbidized titanium. It is shown that powerful discharge channels formed during the synthesis of oxide-ceramic coatings on nitrided and carbidized titanium lead to the formation of monoxides, oxides and hydrides of carbon and nitrogen. This is the reason for the formation of a porous structure of the synthesized coatings and reduces their microhardness.
For the first time, wear-resistant combined coatings on a titanium alloy have been developed by combining diffusion surface saturation with nitrogen followed by vacuum-arc spraying of a nitride layer of titanium or zirconium nitride. It has been established that the presence of a hard diffusion sublayer increases the wear resistance of a titanium alloy reinforced with combined coatings by 2-4 times due to lower elastic deformation of the coating during frictional interaction.
Developed combined coatings on titanium alloy have been developed by electric arc spraying (EAS) of aluminum alloy coating with subsequent synthesis of corundum-based oxide-ceramic layer (plasma electrolytic treatment - PET) on it. It has been established that during its frictional interaction with the counterbody, the friction coefficient, temperature of three-beard heating and wear of the counterbody decrease with increasing counterbody rigidity. It has been shown that during frictional interaction of friction pairs PET layer on EAS D16 (OСL layer with copper inclusions) – steel in I20 oil with glycerin, the selective transfer effect is realized; a copper film is fixed on the steel surface, and the friction coefficient decreases by an order of magnitude.
Product Description
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Baranetskyi Volodymyr S.
Veselivska Halyna H.
Vyla Yaroslav I.
Hvozdetskyi Volodymyr M.
Dvuliat Ihor M.
Dzoba Yurii V.
Zadorozhna Khrystyna R.
Kovalchuk Ihor V.
Kordiukevych Myron O.
Kraievskyi Petro P.
Kravchyshyn Taras M.
Lavrys Serhii M.
Lukianenko Oleksandr H.
Pohreliuk Iryna M.
Posuvailo Volodymyr M.
Proskurniak Roman V.
Ripka Semen S.
Sirak Yaryna Ya.
Student Mykhailo M.
Tkachuk Oleh V.
Truch Vasyl St.
Fedirko Viktor M.
Chaban Orest S.
Chumalo Halyna V.
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2024-12-20
