Thermal Expansion of Magnesian Materials

Results for periclase-carbon materials with different proportion of the finely dispersed fraction tested for linear expansion at 20 - 1420°C under argon are reported. The composition of finely dispersed fraction (varying in proportion from 100% periclase to 100% alumomagnesian spinel) and the carbon...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2003-09, Vol.44 (5), p.338-342
Main Authors: Maryasev, I G, Koptelov, V N, Kaplan, F S, Grishina, O R
Format: Article
Language:English
Subjects:
Carbonization
Ceramics
Dispersion
Heat treating
Hysteresis
Periclase
Refractory materials
Spinel
Thermal expansion
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Summary:Results for periclase-carbon materials with different proportion of the finely dispersed fraction tested for linear expansion at 20 - 1420°C under argon are reported. The composition of finely dispersed fraction (varying in proportion from 100% periclase to 100% alumomagnesian spinel) and the carbonization regime are factors that determine the thermal expansion of the materials studied. A hysteretic behavior of the linear expansion curves is established and shown to be related to sintering processes and volumetric phase transformations. The data obtained can be used to optimize the composition and heat treatment of periclase-carbon refractory materials.[PUBLICATION ABSTRACT]
ISSN:1083-4877
1573-9139
DOI:10.1023/B:REFR.0000009042.63398.e0