Spark plasma sintering of oxides and carbide dispersed zirconia inert matrix fuels |
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Authors: | Yin Liu Michael AlbergaYiquan Wu |
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Affiliation: | Kazuo Inamori School of Engineering, New York State College of Ceramics, Alfred University, Alfred 14802, USA |
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Abstract: | Zirconia-based inert matrix fuels reinforced by ZrC were synthesized via spark plasma sintering (SPS). Composites with full density were obtained. In order to prevent the oxidation introduced by dispersed ZrC in the bulk composite, SiC and ZrB2 were later added into the composite and their capability to improve oxidation resistance was examined. SiC was found to form an oxidation layer which could enhance the oxidation resistance. In addition, micro hardness was improved attributing to effective sintering facilitated by silica flow and distribution of ZrC. With an optimum sintering condition and the addition of SiC, thermal conductivity was improved at higher temperature with the help of unoxidized ZrC reinforcement in the bulk composite. |
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Keywords: | C Thermal properties ZrO2 based IMF ZrC dispersion Oxidation resistance Spark plasma sintering |
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