ISSN: 1945-7553
CODEN: JTEVAB
Published Online: 11 October 2011
Page Count: 9

Experimental Procedure for the Mechanical Evaluation of Oxide-Carbon Refractories by Strain Measurement

Muñoz, V.
Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería-Universidad Nacional de Mar del Plata (UNMdP),

Rohr, G. A.
Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería-Universidad Nacional de Mar del Plata (UNMdP),

Cavalieri, A. L.
Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería-Universidad Nacional de Mar del Plata (UNMdP),

Tomba Martinez, A. G.
Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA), Facultad de Ingeniería-Universidad Nacional de Mar del Plata (UNMdP),

(Received 4 October 2010; accepted 7 September 2011)

Abstract

Experimental issues regarding the implementation of a methodology for obtaining strain-stress curves at high temperatures and in a controlled atmosphere of oxide-C refractories are presented. These curves give a detailed description of the material’s mechanical behavior that is not attainable using conventional tests. The method to measure the specimen strain by contact extensometry and the system to control the atmosphere by a gas flow are described. As an example, the experimental study of commercial Al₂O₃-MgO-C refractory bricks used in steel ladles at high temperature (1260 °C) in both air and N₂ atmospheres is presented showing the valuable information obtained applying strain-stress measurements.

Keywords:
oxide-C refractories, stress-strain curves, high temperature

Paper ID: JTE103455
DOI: 10.1520/JTE103455
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