Creep and long-term strength of magnesia ceramics

descriptionPublicationkeyboard_double_arrow_right Article 01 May 1972 English Publisher:Springer Science and Business Media LLCJournal:Refractories, volume 13, pages 386-390 (issn: 0034-3102, eissn: 1573-9139,

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Authors: �. P. Sysoev; E. S. Lukin; D. N. Poluboyarinov;

doi: 10.1007/bf01284863

Creep and long-term strength of magnesia ceramics

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Abstract

A study was made of the creep and long-term strength of magnesium oxide ceramics with crystal sizes of 12 and 25μ at 1400–1550°C and 200–600 kg/cm2. Ceramics with smaller crystal sizes are characterized, in identical conditions, by a higher creep rate, but lower long-term strength. The rate of the steady creep and the time prior to destruction are related for magnesia by the ratioτp=A(e)−2. Magnesium oxide ceramics are characterized by the mechanism of destruction during creep.

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