Research in the Field of Preparing Molded and Unmolded Refractories Based on High-Alumina HCBS. Part 3. Effect of Firing Temperature on Sintering and Mullitization of Materials Prepared on the Basis of Composite Composition HCBS1

Research in the Field of Preparing Molded and Unmolded Refractories Based on High-Alumina HCBS.... The effect of firing temperature on sintering and mullitization of six batches of specimens prepared from HCBS based on high-alumina bauxite and very fine quartz glass (VFQG) is studied. In the range 900 – 1200°C (soaking 1 h) normal sintering is noted accompanied by insignificant (0.4 – 0.5%) shrinkage and a sharp increase in ultimate strength in bending (110 – 130 MPa). In the range 1200 – 1400 of 1500°C (depending on composition) specimen growth by 1.0 – 2.5% is noted, due to mullitization. Depending on composition and solid phase fineness the start of sintering for mullitized specimens is noted at temperatures exceeding 1400 – 1500°C. Specimen material modeling a matrix system of high-alumina refractories has high strength and volume constancy after prolonged thermal ageing. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Refractories and Industrial Ceramics Springer Journals

Research in the Field of Preparing Molded and Unmolded Refractories Based on High-Alumina HCBS. Part 3. Effect of Firing Temperature on Sintering and Mullitization of Materials Prepared on the Basis of Composite Composition HCBS1

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Publisher
Springer US
Copyright
Copyright © 2016 by Springer Science+Business Media New York
Subject
Material Science; Characterization and Evaluation of Materials; Materials Science, general; Ceramics, Glass, Composites, Natural Methods
ISSN
1083-4877
eISSN
1573-9139
D.O.I.
10.1007/s11148-016-9906-9
Publisher site
See Article on Publisher Site

Abstract

The effect of firing temperature on sintering and mullitization of six batches of specimens prepared from HCBS based on high-alumina bauxite and very fine quartz glass (VFQG) is studied. In the range 900 – 1200°C (soaking 1 h) normal sintering is noted accompanied by insignificant (0.4 – 0.5%) shrinkage and a sharp increase in ultimate strength in bending (110 – 130 MPa). In the range 1200 – 1400 of 1500°C (depending on composition) specimen growth by 1.0 – 2.5% is noted, due to mullitization. Depending on composition and solid phase fineness the start of sintering for mullitized specimens is noted at temperatures exceeding 1400 – 1500°C. Specimen material modeling a matrix system of high-alumina refractories has high strength and volume constancy after prolonged thermal ageing.

Journal

Refractories and Industrial CeramicsSpringer Journals

Published: May 6, 2016

References

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