Investigation of three-stage compressive creep of a spinel forming refractory castable containing 8% MgO

Behnam Akbari; Dietmar Gruber; Shengli Jin; Harald Harmuth

doi:10.1016/j.ceramint.2021.10.103

Investigation of three-stage compressive creep of a spinel forming refractory castable containing 8% MgO

Behnam Akbari
, Dietmar Gruber
, Shengli Jin
, Harald Harmuth

Lehrstuhl für Gesteinshüttenkunde (320)

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Begutachtung

Abstract

A spinel forming castable with an initial MgO content of 8%, commonly applied in refractory linings in the steel industry, was characterised with regard to the creep behaviour. Three creep stages were observed for 1300, 1400, and 1500 °C for application relevant loads between 3 and 8 MPa for sintered samples. The parameters of the Norton–Bailey creep model were determined for all three creep stages. The added microsilica increased the creep strain rate in the temperature range above 1300 °C. The fitting of the results for only one temperature carries the risk of over-fitting. This was observed for the first creep stage at 1400 and 1500 °C. Nevertheless, for the investigated material, it was not possible to achieve a common fit for a larger temperature range. The evaluation of the creep parameters by different combinations of measurements allowed to obtain statistical information about the creep parameters.

Originalsprache	Englisch
Seiten (von - bis)	3287-3292
Seitenumfang	6
Fachzeitschrift	Ceramics International (Printversion)
Jahrgang	48.2022
Ausgabenummer	3
Frühes Online-Datum	22 Okt. 2021
DOIs	https://doi.org/10.1016/j.ceramint.2021.10.103
Publikationsstatus	Veröffentlicht - 1 Feb. 2022

Bibliographische Notiz

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center “Integrated Computational Material, Process and Product Engineering (IC-MPPE)” (Project No 859480). This program is supported by the Austrian Federal Ministries for Transport, Innovation and Technology (BMVIT) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG) , and the federal states of Styria, Upper Austria and Tyrol .

Funding Information:
The authors gratefully acknowledge the financial support under the scope of the COMET program within the K2 Center ?Integrated Computational Material, Process and Product Engineering (IC-MPPE)? (Project No 859480). This program is supported by the Austrian Federal Ministries for Transport, Innovation and Technology (BMVIT) and for Digital and Economic Affairs (BMDW), represented by the Austrian research funding association (FFG), and the federal states of Styria, Upper Austria and Tyrol.

Publisher Copyright:
© 2021

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10.1016/j.ceramint.2021.10.103

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