Search academic texts

Information × Registration Number 0221U101406, (0120U100779) , R & D reports Title Development of synthesis methods for solid anode wear-resistant layers on structural aluminum alloys popup.stage_title Встановлення закономірностей формування твердих анодних оксидних покриттів з підвищеними функціональними властивостями на алюмінієвих сплавах Head Mykhaylo M. Student, Доктор технічних наук Registration Date 21-01-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description1 To develop methods for the synthesis of hard anodic layers (Hard Anodic Coatings) with high durability and tribological characteristics on structural aluminum alloys. popup.description2  The equipment was modernized, which made it possible to carry out the process of hard anodizing of aluminum alloys in the temperature range of -4 ... 0 ° C. A switching power supply was manufactured, which allows the process of hard anodizing at room temperature and a significantly lower electrolyte concentration. The influence of the current-voltage characteristics of the hard anodizing process, the chemical composition of the electrolyte on the structure and phase composition of the oxide layer on aluminum alloys of the Al-Cu alloying system has been investigated. Having studied the change in the forming voltage during the anodic treatment of the AD0 (1011) aluminum alloy, we found that at a constant current density of 5 A at the initial moment, the forming voltage strongly increases, obviously, this is associated with an increase in the thickness of the oxide layer, and after 30 min it decreases strongly due to the accumulation of aluminum ions in the pores of the oxide layer. It was found that the oxide layer (Al2O3  H2O) in the process of hard anodizing (Hard Anodic Coatings) on aluminum alloys is formed not only by oxygen ions, which are formed during the decomposition of water, but also by neutral oxygen atoms, which are formed during the decomposition of hydrogen peroxide H2O2 and ozone O3 ... It was found that the addition of a 20% aqueous solution of H2SO4 hydrogen peroxide (H2O2) to the electrolyte for solid anodizing, as well as blowing it with an air-ozone mixture, increases the thickness and microhardness of the anodized layer by 50%, due to a halving of the number of water molecules in aluminum oxide (Al2O3  1.5 H2O). Product Description popup.authors Baranetskyi Volodymyr S. Veselivska Halyna H. Hvozdetskyi Volodymyr M. Dzoba Yurii V. Dovhunyk Volodymyr M. Zadorozhna Khrystyna R. Kovalchuk Ihor V. Kraievskyi Petro P. Kravchyshyn Taras M. Kudlak Stepan M. Kuchar Ivan S. Lavrys Serhii M. Lukianenko Oleksandr H. Petryshyn Mykhailo S. Pohreliuk Iryna M. Posuvailo Volodymyr M. Proskurniak Roman V. Sirak Yaryna Ya. Student Mykhailo M. Stupnytskyi Taras R. Tkachuk Oleh V. Trush Vasyl S. Fedirko Viktor M. Chaban Orest S. Chumalo Halyna V. popup.nrat_date 2021-01-21 Close

Information × Registration Number 0221U101406, (0120U100779) , R & D reports Title Development of synthesis methods for solid anode wear-resistant layers on structural aluminum alloys popup.stage_title Встановлення закономірностей формування твердих анодних оксидних покриттів з підвищеними функціональними властивостями на алюмінієвих сплавах Head Mykhaylo M. Student, Доктор технічних наук Registration Date 21-01-2021 Organization Physico-Mechanical Institute named after GV Karpenko of the National Academy of Sciences of Ukraine popup.description1 To develop methods for the synthesis of hard anodic layers (Hard Anodic Coatings) with high durability and tribological characteristics on structural aluminum alloys. popup.description2  The equipment was modernized, which made it possible to carry out the process of hard anodizing of aluminum alloys in the temperature range of -4 ... 0 ° C. A switching power supply was manufactured, which allows the process of hard anodizing at room temperature and a significantly lower electrolyte concentration. The influence of the current-voltage characteristics of the hard anodizing process, the chemical composition of the electrolyte on the structure and phase composition of the oxide layer on aluminum alloys of the Al-Cu alloying system has been investigated. Having studied the change in the forming voltage during the anodic treatment of the AD0 (1011) aluminum alloy, we found that at a constant current density of 5 A at the initial moment, the forming voltage strongly increases, obviously, this is associated with an increase in the thickness of the oxide layer, and after 30 min it decreases strongly due to the accumulation of aluminum ions in the pores of the oxide layer. It was found that the oxide layer (Al2O3  H2O) in the process of hard anodizing (Hard Anodic Coatings) on aluminum alloys is formed not only by oxygen ions, which are formed during the decomposition of water, but also by neutral oxygen atoms, which are formed during the decomposition of hydrogen peroxide H2O2 and ozone O3 ... It was found that the addition of a 20% aqueous solution of H2SO4 hydrogen peroxide (H2O2) to the electrolyte for solid anodizing, as well as blowing it with an air-ozone mixture, increases the thickness and microhardness of the anodized layer by 50%, due to a halving of the number of water molecules in aluminum oxide (Al2O3  1.5 H2O). Product Description popup.authors Baranetskyi Volodymyr S. Veselivska Halyna H. Hvozdetskyi Volodymyr M. Dzoba Yurii V. Dovhunyk Volodymyr M. Zadorozhna Khrystyna R. Kovalchuk Ihor V. Kraievskyi Petro P. Kravchyshyn Taras M. Kudlak Stepan M. Kuchar Ivan S. Lavrys Serhii M. Lukianenko Oleksandr H. Petryshyn Mykhailo S. Pohreliuk Iryna M. Posuvailo Volodymyr M. Proskurniak Roman V. Sirak Yaryna Ya. Student Mykhailo M. Stupnytskyi Taras R. Tkachuk Oleh V. Trush Vasyl S. Fedirko Viktor M. Chaban Orest S. Chumalo Halyna V. popup.nrat_date 2021-01-21 Close