Abstract
The manner in which the molar ratio n = [sodium polyphosphate]/[Me cation] in aqueous electrolytes is related to the thickness h and the element content (EC) of anodic layers formed on aluminum and its alloys during electric microbreakdowns (sparks, microarcs) is established. The polyphosphate structure, the electrolyte pH, and the nature and charge of Me cation do not affect dependences of EC and h on n in the case of Mn(II), Pb(II), Mg(II), Zn(II), Ni(II), Y(III), and Eu(III). The film growth mechanism changes with n. The incorporation of P, Me(II), or Me(III) is due to thermolysis of precipitate from electrolyte containing hydrated polyphosphates of Me(II) or Me(III), the thermolysis occurring at the anode under the action of electric breakdowns.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Rudnev, V.S., Yarovaya, T.P., Kon'shina, G.I., et al., Elektrokhimiya, 1996, vol. 32, p. 970.
Rudnev, V.S., Boguta, D.L., Yarovaya, T.P., et al., Zashch. Met., 1999, vol. 35, p. 520.
Rudnev, V.S., Yarovaya, T.P., Kon'shin, V.V., et al., Elektrokhimiya, 1997, vol. 33, p. 577.
Rudnev, V.S., Yarovaya, T.P., Kon'shin, V.V., et al., Elektrokhimiya, 1998, vol. 34, p. 575.
Prodan, E.A., Prodan, L.I., and Ermolenko, N.F., Tripolifosfaty i ikh primenenie (Tripoliphosphates and Their Application), Minsk: Nauka i Tekhnika, 1969.
Lazarevski (Oreshnikova), E.V., Kubasova, L.V., Chudinova, N.N., and Tananaev, I.V., Izv. Akad. Nauk SSSR, Neorg. Mater., 1980, vol. 16, p. 120.
Ezhova, Zh.A., Tananaev, I.V., Zorina, L.N., et al., Izv. Akad. Nauk SSSR, Neorg. Mater., 1978, vol. 14, p. 2067.
Lazarevski, E.V., Kubasova, L.V., Chudinova, N.N., and Tananaev, I.V., Izv. Akad. Nauk SSSR, Neorg. Mater., 1982, vol. 18, p. 1544.
Konstant, Z.A. and Dindune, A.P., Fosfaty dvukhvalentnykh metallov (Phosphates of Divalent Metals), Riga: Zinatne, 1987.
Litvin, B.N. and Masloboev, V.A., Redkozemel'nye fosfaty (Phosphates of the Rare-Earth Elements), Leningrad: Nauka, 1989.
Bondar', I.A. and Mal'shikov, A.E., Fosfaty elementov chetvertoi gruppy (Phosphates of the Group Four Elements), St. Petersburg: Nauka, 1992.
Rudnev, V.S., Yarovaya, T.P., Boguta, D.L., et al., Abstracts of Papers, Mezhdunarodnaya konferentsiya “Korablestroenie i okeanotekhnika: Problemy i perspektivy” (Int. Conf. “Shipbuilding and Oceanic Engineering: The Problems and the Prospects”), Vladivostok: Dal'nevostochn. Gos. Tekh. Univ., 1998, part 2, p. 98.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rudnev, V.S., Yarovaya, T.P., Boguta, D.L. et al. Effect of the Polyphosphate/Me Molar Ratio in an Aqueous Electrolyte on the Composition of Anodic-Spark Layers at Aluminum Alloys. Russian Journal of Electrochemistry 36, 1291–1295 (2000). https://doi.org/10.1023/A:1026651630418
Issue Date:
DOI: https://doi.org/10.1023/A:1026651630418