Mechanical properties of a new class of MGO-C castables with extruded graphite pellets

Gerhard Horst Paschek

Research output: ThesisMaster's Thesis

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Abstract

Some of the negative impacts of carbon addition on the strength of castables are yet to be overcome in order to fulfill its potential benefits for oxidation resistance. This paper reports the results of recent studies conducted at CIREP on the effects of different types of carbon additives on the thermo-mechanical properties of magnesia-based castables. Experimental techniques included measurements of the hot modulus of rupture (HMOR), hot modulus of elasticity (HMOE), as well as the wedge-splitting test (WST). The comparison of evolving microstructures was carried out employing scanning electron microscopy with microanalysis attachment (SEM/EDS) and X-ray diffraction (XRD). HMOR values of 12 MPa at 1300°C have been reached in castables based on MgO-C with silicon, containing up to 7% carbon.
Translated title of the contributionMechanische Eigenschaften neuer MgO-C Gießmassen mit extrudierten Grafit Pellets
Original languageEnglish
QualificationDipl.-Ing.
Awarding Institution
  • Montanuniversität
Supervisors/Advisors
  • Harmuth, Harald, Supervisor (internal)
Publication statusPublished - 2020

Bibliographical note

embargoed until null

Keywords

  • thermo-mechanical properties magnesia-based castables hot modulus of rupture (HMOR)
  • hot modulus of elasticity (HMOE)
  • wedge-splitting test (WST)
  • scanning electron microscopy with microanalysis attachment (SEM/EDS)
  • X-ray diffraction (XRD)

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