Effect of Mn/Mo incorporated oxide layer on the corrosion behavior of AA 2024 alloy

Autor:	A. Srinivasan, V.K. William Grips, G. Yoganandan, K.S. Rajam, J.N. Balaraju
Rok vydání:	2011
Předmět:	Materials science General Chemical Engineering Alloy Permanganate Inorganic chemistry Oxide General Chemistry engineering.material Molybdate Electrochemistry Corrosion Barrier layer chemistry.chemical_compound chemistry engineering Salt spray test General Materials Science
Zdroj:	Corrosion Science. 53:4084-4092
ISSN:	0010-938X
DOI:	10.1016/j.corsci.2011.08.016
Popis:	The oxide layer formed over AA 2024 using 10 wt.% H2SO4 (plain oxide, PO) was modified by Mn/Mo oxyanions (permanganate/molybdate modified oxide, PMMO) as an alternative to Cr(VI) ions to enhance the corrosion resistance. The corrosion current density values obtained for PMMO was found to be 2.8% and 1.4% of hydrothermal treated oxide (HTO) and PO respectively after 168 h immersion in 3.5% NaCl solution. The electrochemical studies showed the higher barrier layer resistance for PMMO. The improved corrosion behavior of PMMO was observed based on the damage function calculated. Similar observations were confirmed by continuous salt spray test.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::adb77e4dcde57e83709c73d95071010d https://doi.org/10.1016/j.corsci.2011.08.016 Zobrazit plný text záznamu Full Text from ScienceDirect