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Author: Constantin Virgil

  • Structure and magnetic properties of 1.4541 stainless steel

    • Demidenko Olga
    • Vetcher Alexander
    • Popescu Ana Maria
    • Constantin Virgil
    • Neacsu Elena Ionela
    • Donath Cristina
    Materials Science. Non-Equilibrium Phase Transformations., Vol. 7 (2021), Issue 2, pg(s) 56-57
    • Abstract
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    The influence of corrosion action of Mediterranean, Black and Aegean sea waters on 1.4541 stainless steel structure and magnetic properties is studied. Samples of investigated stainless steel was exposed by marine corrosion action at 25ºC. Crystal structure before and after corrosive action of all sea waters types was characterized by X-ray diffraction (XRD) in CuKα-radiation at room temperature. Temperature dependences of the specific magnetization were studied by the ponderomotive method in the temperature range of 77 – 1100 K in the magnetic field of 0.86 Tesla. It revealed, that crystal structure and specific magnetic characteristics of 1.4541 alloy are resistant to corrosion action of Mediterranean, Black and Aegean sea waters.

  • MATERIALS

    A composite magnetic material with insulating anticorrosive coatings

    • Vetcher Alexander
    • Govor Gennady
    • Demidenko Olga
    • Popescu Ana Maria
    • Constantin Virgil
    • Berdiev Usan
    Machines. Technologies. Materials., Vol. 14 (2020), Issue 7, pg(s) 296-298
    • Abstract
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    We have studied electromagnetic and corrosive properties of new soft-magnetic composite materials made from iron powder ASC 100.29 and Atomet 1001HP, surface of which is encapsulated by insulating anticorrosive oxide coating. The results demonstrate that the use of such materials in power supplies, chokes, transformers, stators and rotors of electrical machines and other devices ensures their stable operation under various conditions.

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