Synthesis of ceramic eutectics using microwave processing

Anton V. Polotai, Jiping Cheng, Dinesh Kumar Agrawal, Elizabeth C. Dickey, Sheldon Cytron

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This communication presents preliminary results of using microwave energy in order to melt and re-solidify oxide and non-oxide refractory ceramic eutectic compositions in an appropriate crucible. The Al2O3 -Y3Al5O12 (YAG) (Tm, = 1827°C) and B4C-TiB2 (Tm = 2310°C) eutectic compositions were melted in a multimode 2.45GHz microwave furnace using a specially designed insulating package based on boron nitride. Our experiments demonstrate the stability of eutectic melt temperature (the absence of temperature runaway) and the uniformity of subsequent eutectic microstructure across the sample diameter during the re-solidification of big ∼7cm 3 samples. The ability to reach ultra-high temperatures (T ∼ 2400°C) and prevent the formation of significant thermal gradient across the sample confirms the potential of using microwave energy for processing of directionally solidified refractory ceramic eutectic compositions.

Original languageEnglish (US)
Title of host publicationAdvances in Ceramic Armor III - A Collection of Papers Presented at the 31st International Conference on Advanced Ceramics and Composites
Pages127-133
Number of pages7
Volume28
Edition5
StatePublished - 2008
Event31st International Conference on Advanced Ceramics and Composites - Daytona Beach, FL, United States
Duration: Jan 21 2007Jan 26 2007

Other

Other31st International Conference on Advanced Ceramics and Composites
CountryUnited States
CityDaytona Beach, FL
Period1/21/071/26/07

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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  • Cite this

    Polotai, A. V., Cheng, J., Agrawal, D. K., Dickey, E. C., & Cytron, S. (2008). Synthesis of ceramic eutectics using microwave processing. In Advances in Ceramic Armor III - A Collection of Papers Presented at the 31st International Conference on Advanced Ceramics and Composites (5 ed., Vol. 28, pp. 127-133)