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Effect of mixing on the properties of nanocarbon containing Al 2 O 3 ‐C continuous casting refractories
Author(s) -
Pilli Venkatesh,
Sarkar Ritwik
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13331
Subject(s) - materials science , graphite , mixing (physics) , carbon fibers , microstructure , carbon black , casting , nano , phase (matter) , continuous casting , metallurgy , composite material , chemical engineering , composite number , chemistry , physics , natural rubber , organic chemistry , quantum mechanics , engineering
The functional refractories used in steel casting operations are usually made up of alumina‐carbon compositions having graphite as the major source of carbon. In recent times, to reduce the carbon content and to enhance the performance by designing microstructure at nano‐sized level, several nano carbon sources and organic binders are introduced to traditional carbon‐based refractories. The homogenous distribution of nano carbon sources within the refractory composition is important to get the advantages of its use. In the present work, nanocarbon black is used along with graphite in the alumina‐carbon system. Three different mixing procedures are followed and how mixing effects the physical and mechanical properties is evaluated. The mixing order with proper nanocarbon distribution throughout the batch composition provided significant improvement in the properties. The microstructural analysis and in situ phase developments in the samples at different temperatures are also studied.