Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction
Abstract
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.
- Authors:
-
- Kutahya Dumlupinar Univ., Kutahya (Turkey)
- Rutgers Univ., New Brunswick, NJ (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Publication Date:
- Research Org.:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- Argonne National Laboratory, Advanced Photon Source; USDOE
- OSTI Identifier:
- 1525985
- Alternate Identifier(s):
- OSTI ID: 1547887
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Ceramics International
- Additional Journal Information:
- Journal Volume: 45; Journal Issue: 6; Journal ID: ISSN 0272-8842
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Flash; Sintering; ZnO; in situ diffraction
Citation Formats
Bicer, Hulya, Beyoglu, Berra, Ozdemir, T. Ertugrul, Okasinski, John, and Tsakalakos, Thomas. Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction. United States: N. p., 2019.
Web. doi:10.1016/j.ceramint.2019.01.057.
Bicer, Hulya, Beyoglu, Berra, Ozdemir, T. Ertugrul, Okasinski, John, & Tsakalakos, Thomas. Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction. United States. https://doi.org/10.1016/j.ceramint.2019.01.057
Bicer, Hulya, Beyoglu, Berra, Ozdemir, T. Ertugrul, Okasinski, John, and Tsakalakos, Thomas. Wed .
"Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction". United States. https://doi.org/10.1016/j.ceramint.2019.01.057. https://www.osti.gov/servlets/purl/1525985.
@article{osti_1525985,
title = {Direct in situ observation of electric field assisted densification of ZnO by energy dispersive X-ray diffraction},
author = {Bicer, Hulya and Beyoglu, Berra and Ozdemir, T. Ertugrul and Okasinski, John and Tsakalakos, Thomas},
abstractNote = {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.},
doi = {10.1016/j.ceramint.2019.01.057},
journal = {Ceramics International},
number = 6,
volume = 45,
place = {United States},
year = {Wed Jan 09 00:00:00 EST 2019},
month = {Wed Jan 09 00:00:00 EST 2019}
}
Web of Science