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Journal of Materials Science

, Volume 41, Issue 17, pp 5480–5489 | Cite as

Studies on sintering behaviour of Al2O3–ZrO2 oxide composites processed by extended arc thermal plasma and conventional heating

  • D. R. Sahu
  • B. K. Roul
  • S. K. Singh
  • R. N. P. Choudhury
Article

Abstract

Al2O3–ZrO2 composites were sintered using low cost extended arc thermal plasma reactor and conventional heating. Composites prepared in a wide range of composition were studied in terms of their density, shrinkage, hardness, structure, microstructure and dielectric response. Experimental parameter such as sintering time, sintering temperature and plasma power were optimized to achieve higher sintered end product. Highly dense sintered products were obtained by plasma heating route within short sintering time compared with conventional sintered method. Interesting development pertaining to structure and phase evolution, structure and dielectric response are analyzed. It is found that compositional variation in this composite produces structural phase separation at different sintering conditions, which is more in plasma heating product than conventional heated product. Plasma sintered product always shows less dielectric constant as compared to conventional sintered sample.

Keywords

Tetragonal Phase Sintered Sample Conventional Heating Sinter Time Plasma Power 

Notes

Acknowledgement

Author D. R. Sahu is thankful to Director Institute of Materials Science, Bhubaneswar for giving permission to visit National Cheng Kung University, Tainan, Taiwan for a research assignment.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • D. R. Sahu
    • 1
    • 2
  • B. K. Roul
    • 2
  • S. K. Singh
    • 3
  • R. N. P. Choudhury
    • 4
  1. 1.Department of Materials Science and EngineeringNational Cheng Kung UniversityTainanTaiwan
  2. 2.Institute of Materials ScienceBhubaneswarIndia
  3. 3.Regional Research LaboratoryBhubaneswarIndia
  4. 4.Department of Physics and MeteorologyIndian Institute of TechnologyKharagpurIndia

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