Corrosion resistance studies of carbon-encapsulated iron nanoparticles

Maciej Fronczak , O. Łabędź , Waldemar Kaszuwara , Michał Bystrzejewski

Abstract

The carbon coating in carbon-encapsulated magnetic nanoparticles is considered as a tight and impermeable barrier which should perfectly protect the magnetic core material from external chemical environment. To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected to corrosion tests, in which various corrosion agents were used. Several mineral and organic acids, as well as active gaseous environments with various oxidation potential, were applied. Additionally, the corrosion resistance was studied under the so-called galvanic corrosion, using two metal ions (copper and silver) which have higher redox potential than the zero-valent iron. The release of iron from the core as well as the morphology, structural features, chemical composition, and magnetic properties of carbon-encapsulated iron nanoparticles was systematically monitored at each stage of the corrosion process. The largest release of Fe from the encapsulate core was observed when nitric acid was used as the corrosion agent.
Author Maciej Fronczak - Faculty of Chemistry (WChUW) [Uniwersytet Warszawski (UW)] [University of Warsaw (UW)]
Maciej Fronczak,,
-
- Uniwersytet Warszawski
, O. Łabędź - [University of Warsaw (UW)]
O. Łabędź,,
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- Uniwersytet Warszawski
, Waldemar Kaszuwara (FMSE / DCFM)
Waldemar Kaszuwara,,
- Division of Construction and Functional Materials
, Michał Bystrzejewski - Faculty of Chemistry (WChUW) [Uniwersytet Warszawski (UW)] [University of Warsaw (UW)]
Michał Bystrzejewski,,
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- Uniwersytet Warszawski
Journal seriesJournal of Materials Science, ISSN 0022-2461, [1573-4803 ], (A 30 pkt)
Issue year2018
Vol53
No5
Pages3805-3816
Publication size in sheets0.55
Keywords in EnglishNanocomposites, Carbon-encapsulated iron nanoparticle, Corrosion resistance
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 2500 General Materials Science
DOIDOI:10.1007/s10853-017-1793-z
Languageen angielski
File
J Mat Sci 53(2018)3805.pdf 2.92 MB
Score (nominal)30
ScoreMinisterial score = 30.0, 29-07-2019, ArticleFromJournal
Publication indicators WoS Citations = 8; Scopus Citations = 9; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 1.064; WoS Impact Factor: 2017 = 2.993 (2) - 2017=2.733 (5)
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