Microstructural Characterization and Thermal Properties of Aluminium Titanate/Spinel Ceramic Matrix Composites

• Authors: U. Önen , T. Boyraz
• Languages of publication: EN

Abstracts

EN

Spinel (MgAl_2O_4) ceramics possesses a high melting point, high hardness, a relatively low density, excellent transmittance, a high strength, a relatively low thermal expansion coefficient, high thermal shock resistance and high chemical inertness. Aluminium titanate (Al_2TiO_5) exhibits extremely good thermal shock resistance and low thermal conductivity coupled with good chemical resistance in molten metals. In the present work, aluminium titanate/spinel ceramics composites with different percentages of Al_2TiO_5 were prepared using powder metallurgy techniques. The microstructural, mechanical and thermal properties were characterized using X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, dilatometer and hardness. Thermal shock resistance behaviour under water quenching of the as-prepared ceramics was also evaluated. Results revealed that the addition of aluminium titanate to spinel matrix improves the properties of the aluminium titanate/spinel ceramics.

Keywords

EN

81.05.Mh

Discipline

• 81.05.Mh: Cermets, ceramic and refractory composites

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 2
• Pages: 488-490

Dates

published

2014-02

Contributors

author

U. Önen

• Cumhuriyet University, Metallurgy and Materials Engineering, Sivas, Turkey

author

T. Boyraz

• Cumhuriyet University, Metallurgy and Materials Engineering, Sivas, Turkey

References

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Identifiers

DOI

10.12693/APhysPolA.125.488