Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction
- Kutahya Dumlupinar Univ., Kutahya (Turkey)
- Rutgers Univ., New Brunswick, NJ (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
Electric field assisted sintering techniques are used to enhance the densification process, reducing sintering time and temperature. Here, we report the in situ characterization of non-isothermal densification behavior of zinc oxide under simultaneous application of thermal and electric field by energy dispersive X-ray diffraction. 99% density was achieved under the electric field of 50 V/mm in the 588–843 °C range in a short time without grain growth. The in-situ energy dispersive X-ray diffraction study revealed the abnormal volumetric unit cell expansion of 0.9% at 843 °C associated with the observed sudden rise of the power absorption by the specimen during densification. Furthermore, the variation in peak broadening as a function of time exhibited singularity in the 588–843 °C range implying the formation and rearrangement of defects correlated with densification during electric field assisted sintering.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- Argonne National Laboratory, Advanced Photon Source; USDOE
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1525985
- Alternate ID(s):
- OSTI ID: 1547887
- Journal Information:
- Ceramics International, Journal Name: Ceramics International Journal Issue: 6 Vol. 45; ISSN 0272-8842
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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