| 硅微粉结合SiC窑具氧化动力学 |
| KINETICS OF OXIDATION OF SiC SAGGER BONDED WITH SILICA FUME |
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| 摘要: |
| 关键词: 硅微粉 碳化硅窑具 氧化动力学 矿化剂 |
| 基金项目: |
| Abstract: The SiC sagger bonded with silica fume can react with oxygen at high temperatue which results in a descent of SiC content and shortens the life of the sagger. The oxidization rats is greater at higher temperature. The addition of MnO2 mineralizer makes the binding layer more stable, denser and more homogeneous, which obstructs the diffusion of O2 and lowers the rate of oxidization. The kinetic equations for oxidation of SiC sagger with mineralizer are G(1100℃)=1.67×10-4τ0.72, G(1300℃)=4.22×10-4τ0.98 and those without mineralizer are G(1100℃)=9.88×10-4 τ0.48, G(1300℃)=1.72×10-3 τ0.70 and those without mineralizer are G(1100℃)=1.67×10-4 τ0.72, G(1300℃)=4.22×10-4 τ0.98. |
| Keywords: silica fume carborundum sagger kinetics of oxidation mineralizer |
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| 阮玉忠,于岩,吴万国,杜育红,林春莺.硅微粉结合SiC窑具氧化动力学[J].无机化学学报,1999,15(1):110-113. |
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