| Synthesis of ZrO2 -SiC Composite by Carbothermal Reduction of Zircon |
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| 作者姓名： | MA Beiyue YU JingkunSchool of Materials and Metallurgy Northeastern University Shenyang China |
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| 作者单位： | MA Beiyue，YU JingkunSchool of Materials and Metallurgy，Northeastern University，Shenyang 110004，China |
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| 摘 要： | Zircon （mesh size ≤ 44μm ） and carbon black （mesh size ≤30μm ） were used as the starting materials, weighed with re（zircon） ： re（carbon black） of 100 ： 20 and mixed fully. The specimens with the diameter of 20ram and length of 5ram were prepared by pressing at 100 MPa, then dried at 120℃ for 12h, put into a furnace with 1. 5L ·min^-1 argon gas and fired at 1450℃, 1500℃, 1550℃, 1600℃ and 1650℃ for 4h, respectively. The chemical composition, phase composition and microstructure of the specimens were studied by chemical analysis, X-ray diffraction and scanning electronic microscope, and the carbothermal reduction reaction process was discussed by thermodynamic analysis. The results showed that the ZrO2-SiC composite could be synthesized by carbothermal reduction reaction using zircon and carbon black as the starting materials in argon atmosphere. The composite with different composition was obtained by controlling the firing temperature and partial pressure of CO gas. The proper temperature to synthesize ZrO2-SiC composite was 1600℃ in this experiment.
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| 关 键 词： | 碳高温还原 锆石 合成材料 复合材料 |
| 收稿时间： | 2007-08 |
Synthesis of ZrO2 -SiC Composite by Carbothermal Reduction of Zircon |
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| MA Beiyue,YU JingkunSchool of Materials and Metallurgy,Northeastern University,Shenyang ,China.Synthesis of ZrO2 -SiC Composite by Carbothermal Reduction of Zircon[J].China’s Refractories,2007,16(4):17-20. |
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| Authors: | MA Beiyue YU Jingkun |
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| Affiliation: | [1]School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China |
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| Abstract: | Carbothermal reduction, Zircon, ZrO2-SiC composite |
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| Keywords: | Carbothermal reduction Zircon ZrO2-SiC composite |
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