| 尹月,马北越,张博文,李世明,于景坤,张战,李光强.添加La2O3对粉煤灰合成Al2O3-SiC复合粉体的影响[J].材料导报,2017,31(4):111-114, 120 |
| 添加La2O3对粉煤灰合成Al2O3-SiC复合粉体的影响 |
| Effect of La2O3 Addition on Synthesis of Al2O3-SiC Composite Powders from Fly Ash |
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| DOI：10.11896/j.issn.1005-023X.2017.04.024 |
| 中文关键词: 粉煤灰 碳热还原反应 Al2O3-SiC La2O3 |
| 英文关键词: fly ash, carbothermal reduction reaction, Al2O3-SiC, La2O3 |
| 基金项目:钢铁冶金及资源利用省部共建教育部重点实验室开放基金(武汉科技大学)(FMRU201401);中央高校基本科研业务费专项资金(N150204021) |
| 作者 | 单位 | E-mail | | 尹月 | 东北大学冶金学院, 沈阳 110819 | | | 马北越 | 东北大学冶金学院, 沈阳 110819 | 15702414720@163.com | | 张博文 | 东北大学冶金学院, 沈阳 110819 | | | 李世明 | 东北大学冶金学院, 沈阳 110819 | | | 于景坤 | 东北大学冶金学院, 沈阳 110819 | | | 张战 | 武汉科技大学,省部共建耐火材料与冶金国家重点实验室,钢铁冶金及资源利用省部共建教育部重点实验室, 武汉 430081 | | | 李光强 | 武汉科技大学,省部共建耐火材料与冶金国家重点实验室,钢铁冶金及资源利用省部共建教育部重点实验室, 武汉 430081 | |
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| 中文摘要: |
| 以粉煤灰和活性炭为原料,通过碳热还原反应在Ar气氛下合成Al2O3-SiC粉体,探究了一条低成本合成Al2O3-SiC粉体的可行途径。研究了添加La2O3对合成过程的影响。采用XRD和SEM表征了材料的物相组成和显微形貌。结果表明:当粉煤灰与活性炭质量比为100∶44,在1 550 ℃下保温5 h,添加6%(质量分数)的La2O3时,可合成性能良好的Al2O3-SiC粉体,颗粒分布均匀,平均粒径为0.5~1 μm,较不添加La2O3合成温度降低约50 ℃。 |
| 英文摘要: |
| Al2O3-SiC powders were synthesized by carbothermal reduction reaction in an argon atmosphere, with fly ash and activated carbon as raw materials. It provides a feasibility route with low-cost to the synthesis of Al2O3-SiC powders. The influence of La2O3 addition on the synthesis process was studied. The phase composition and microstructure of the powders were characterized by XRD and SEM. Results showed that the Al2O3-SiC powders could be synthesized at 1 550 ℃ for 5 h, when the mass ratio of fly ash to activated carbon was 100∶44 with addition of 6% La2O3 (mass fraction). The powders had good performance, uniform particle distribution, and the average particle size was about 0.5-1 μm. The synthesis temperature of composite powder with La2O3 was 50 ℃ lower than that of the mixture without La2O3. |
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