Electrochemical behavior of aluminum-molybdenum surface composites developed by friction stir processing

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dc.contributor.author Mahesh, V. P.
dc.contributor.author Alphonsa, J.
dc.contributor.author Arora, Amit
dc.coverage.spatial Germany
dc.date.accessioned 2012-09-19T16:39:14Z
dc.date.available 2012-09-19T16:39:14Z
dc.date.issued 2021-08
dc.identifier.citation Mahesh, V. P.; Alphonsa, J. and Arora, Amit, "Electrochemical behavior of aluminum-molybdenum surface composites developed by friction stir processing", Journal of Materials Engineering and Performance, DOI: 10.1007/s11665-021-06050-2, Aug. 2021. en_US
dc.identifier.issn 1059-9495
dc.identifier.issn 1544-1024
dc.identifier.uri https://doi.org/10.1007/s11665-021-06050-2
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6807
dc.description.abstract Aluminum alloys find application in aerospace, automobile, and structural sectors. However, these alloys are susceptible to corrosion attack in chloride environments. Introducing a second species on the surface by surface composite fabrication can be a way to increase the corrosion resistance of the aluminum alloys. Here, we present corrosion studies on aluminum matrix surface composites fabricated using friction stir processing. The reinforcement of Mo particles is considered with varying percentage and distribution in the surface composite. The particle content and distribution are analyzed using SEM–EDS and optical image analysis. Based on the potentiodynamic polarization analysis, the surface composites exhibit improved corrosion resistance with higher corrosion potential and lower corrosion rate. Increase in corrosion resistance is observed for higher Mo content with homogenous distribution. While the base alloy exhibit mixed corrosion behavior, the surface composites show charge-transfer controlled corrosion behavior in the Electrochemical Impedance Spectroscopy. Reduced pitting in the Mo-rich areas is confirmed by microscopic analysis of the corroded material.
dc.description.statementofresponsibility by V.P. Mahesh, J. Alphonsa and Amit Arora
dc.language.iso en_US en_US
dc.publisher Springer Verlag en_US
dc.subject Aluminum en_US
dc.subject EIS en_US
dc.subject Pitting corrosion en_US
dc.subject Polarization en_US
dc.subject surface composite en_US
dc.title Electrochemical behavior of aluminum-molybdenum surface composites developed by friction stir processing en_US
dc.type Article en_US
dc.relation.journal Journal of Materials Engineering and Performance

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