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Filter Functionalization with Carbon Nanotubes and Alumina Nanosheets for Advanced Steel Filtration
Author(s) -
Storti Enrico,
Dudczig Steffen,
Schmidt Anne,
Schmidt Gert,
Aneziris Christos G.
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201700142
Subject(s) - materials science , filtration (mathematics) , carbon nanotube , silicate , carbon steel , filter (signal processing) , layer (electronics) , composite material , surface modification , carbon fibers , metallurgy , chemical engineering , corrosion , mathematics , statistics , composite number , engineering , computer science , computer vision
In order to explore the influence of nano‐sized materials on steel filtration, carbon‐bonded alumina filters are coated with multi‐walled carbon nanotubes and alumina nanosheets. The samples are tested for different times in contact with a steel melt containing endogenous inclusions at 1650 °C. Investigations of the filters after the test reveal the typical layer buildup described in the literature. After 60 s fine endogenous inclusions are found on the top layer. By means of a special automatic SEM, steel samples after the tests are thoroughly analyzed. The population of detected inclusions is classified in terms of size and chemistry. Nano‐coated filters show excellent filtration efficiency for 10 s immersion time. Longer times result in worse performance and generation of new silicate inclusions.