Patents Assigned to PRATT & WHITNEY RZESZOW S.A.
  • Method of Forming Corrosion Resistant Coating and Related Apparatus
    Publication number: 20210230751
    Abstract: A method of forming a corrosion-resistant ceramic coating on a metallic substrate, the method comprising providing a passivation layer on a surface of the metallic substrate by electrochemical passivation of the metallic substrate under a first electrical current and using a first electrically conducting solution; and providing the corrosion-resistant ceramic coating on an outermost surface of the metallic substrate, the outermost surface in use adapted to be exposed to a corrosive environment, by plasma electrolytic oxidation of the metallic substrate with the passivation layer, in a second electrically conducting solution and under a second electrical current having a discharge voltage. The first and the second electrically conducting solutions comprise a tetrafluoroborate compound.
    Type: Application
    Filed: April 9, 2021
    Publication date: July 29, 2021
    Applicants: PRATT & WHITNEY RZESZOW S.A., RZESZOW UNIVERSITY OF TECHNOLOGY
    Inventors: Krzysztof Raga, Adam Baran, Kazimierz Kwolek, Monika Kocój-Toporowska, Anna Dryzner, Jan Sieniawski, Andrzej Sobkowiak, Przemyslaw Kwolek, Lukasz Florczak, Marcin Drajewicz, Ginter Nawrat, Lukasz Nieuzyla, Tomasz Wieczorek, Miroslaw Dubiel, Gabriela Lach, Agnieszka Krzakala
  • Method of forming corrosion resistant coating and related apparatus
    Patent number: 11001927
    Abstract: A method of forming a corrosion-resistant ceramic coating on a metallic substrate, the method comprising providing a passivation layer on a surface of the metallic substrate by electrochemical passivation of the metallic substrate under a first electrical current and using a first electrically conducting solution; and providing the corrosion-resistant ceramic coating on an outermost surface of the metallic substrate, the outermost surface in use adapted to be exposed to a corrosive environment, by plasma electrolytic oxidation of the metallic substrate with the passivation layer, in a second electrically conducting solution and under a second electrical current having a discharge voltage. The first and the second electrically conducting solutions comprise a tetrafluoroborate compound.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: May 11, 2021
    Assignees: PRATT & WHITNEY RZESZOW S.A., RZESZOW UNIVERSITY OF TECHNOLOGY
    Inventors: Krzysztof Raga, Adam Baran, Kazimierz Kwolek, Monika Kocój-Toporowska, Anna Dryzner, Jan Sieniawski, Andrzej Sobkowiak, Przemysław Kwolek, Łukasz Florczak, Marcin Drajewicz, Ginter Nawrat, Łukasz Nieużyła, Tomasz Wieczorek, Mirosław Dubiel, Gabriela Lach, Agnieszka Krząkała