The influence of the processing parameters on the reactive flash sintering of ZrO2-CeO2
Abstract
Reactive flash sintering (RFS) is a method that was recently developed to produce dense single-phase bulk ceramic parts through solid-state reactions in a single-step that only takes a few minutes. The influence of the RFS parameters on the phase purity of a simple mixed oxide, (Zr0.8,Ce0.2)O2, was investigated. Parameters such as furnace temperature, furnace atmosphere, electric current density, and alternating current (AC) or direct current (DC) were examined. It was found that (Zr0.8,Ce0.2)O2 pellets with high densities, above 90% of its theoretical density, can be produced by RFS in a few minutes when RFS occurs under oxidizing atmospheres, AC fields with current densities of 100 mA·mm–2, and at a furnace temperature of 1200°C. Reducing conditions such as Ar-H2 atmosphere and DC fields, low furnace temperatures, and low current densities resulted in phase impurities and poor reactions between the ZrO2 and the CeO2 powders. These results show that RFS is a useful method to produce mixed oxides, but it is very sensitive to the processing parameters. This is the first time that the influence of most of the RFS processing parameters has been studied systematically. Thus, the present work aims to provide guidelines on selecting the right processing parameters when exploringmore »
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1868300
- Report Number(s):
- LA-UR-21-30248
Journal ID: ISSN 0002-7820
- Grant/Contract Number:
- 89233218CNA000001
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the American Ceramic Society
- Additional Journal Information:
- Journal Volume: 105; Journal Issue: 6; Journal ID: ISSN 0002-7820
- Publisher:
- American Ceramic Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; Reactive flash sintering; flash sintering; mixed oxides; solid-state reactions; ZrO2-CeO2
Citation Formats
Ingraci Neto, Rubens Roberto, Kardoulaki, Erofili, and Valdez, James Anthony. The influence of the processing parameters on the reactive flash sintering of ZrO2-CeO2. United States: N. p., 2022.
Web. doi:10.1111/jace.18426.
Ingraci Neto, Rubens Roberto, Kardoulaki, Erofili, & Valdez, James Anthony. The influence of the processing parameters on the reactive flash sintering of ZrO2-CeO2. United States. https://doi.org/10.1111/jace.18426
Ingraci Neto, Rubens Roberto, Kardoulaki, Erofili, and Valdez, James Anthony. Sat .
"The influence of the processing parameters on the reactive flash sintering of ZrO2-CeO2". United States. https://doi.org/10.1111/jace.18426. https://www.osti.gov/servlets/purl/1868300.
@article{osti_1868300,
title = {The influence of the processing parameters on the reactive flash sintering of ZrO2-CeO2},
author = {Ingraci Neto, Rubens Roberto and Kardoulaki, Erofili and Valdez, James Anthony},
abstractNote = {Reactive flash sintering (RFS) is a method that was recently developed to produce dense single-phase bulk ceramic parts through solid-state reactions in a single-step that only takes a few minutes. The influence of the RFS parameters on the phase purity of a simple mixed oxide, (Zr0.8,Ce0.2)O2, was investigated. Parameters such as furnace temperature, furnace atmosphere, electric current density, and alternating current (AC) or direct current (DC) were examined. It was found that (Zr0.8,Ce0.2)O2 pellets with high densities, above 90% of its theoretical density, can be produced by RFS in a few minutes when RFS occurs under oxidizing atmospheres, AC fields with current densities of 100 mA·mm–2, and at a furnace temperature of 1200°C. Reducing conditions such as Ar-H2 atmosphere and DC fields, low furnace temperatures, and low current densities resulted in phase impurities and poor reactions between the ZrO2 and the CeO2 powders. These results show that RFS is a useful method to produce mixed oxides, but it is very sensitive to the processing parameters. This is the first time that the influence of most of the RFS processing parameters has been studied systematically. Thus, the present work aims to provide guidelines on selecting the right processing parameters when exploring RFS.},
doi = {10.1111/jace.18426},
journal = {Journal of the American Ceramic Society},
number = 6,
volume = 105,
place = {United States},
year = {Sat Feb 19 00:00:00 EST 2022},
month = {Sat Feb 19 00:00:00 EST 2022}
}
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