...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Central South University of Technology >Preparation of ultrafine α-Al_2O_3 powders by catalytic sintering of ammonium aluminum carbonate hydroxide at low temperature
【24h】

Preparation of ultrafine α-Al_2O_3 powders by catalytic sintering of ammonium aluminum carbonate hydroxide at low temperature

机译：氢氧化铝碳酸铝的低温催化烧结制备超细α-Al_2O_3粉体

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The precursor of ammonium aluminum carbonate hydroxide was synthesized by using aluminum sulfate (Al_2(SO_4)_3) and ammonium carbonate ((NH_4 )_2CO_3). The effects of α-Al_2O_3 seeds and mixture composed of α-Al_2O_3 and ammonium nitrate, as well as multiplex catalysts (AT) on phase transformation of alumina in sintering process were investigated respectively. The results show that the α-Al_2O_3 seeds and the mixture of α-Al_2O_3 and ammonium nitrate can lower the phase transformation temperature of α-Al_2O_3 to different extents while the particles obtained agglomerate heavily. AT has great potential synergistic effects on the phase transformation of alumina and reduces the phase transformation temperature of α-Al_2O_3 and the trends of necking-formation between particles. Therefore the dispersion of powder particles is improved significantly.
机译：利用硫酸铝（Al_2（SO_4）_3）和碳酸铵（（NH_4）_2CO_3）合成了碳酸氢铝铵。分别研究了α-Al_2O_3晶种以及由α-Al_2O_3与硝酸铵组成的混合物以及多元催化剂（AT）对烧结过程中氧化铝的相变的影响。结果表明，α-Al_2O_3晶种以及α-Al_2O_3和硝酸铵的混合物可以在不同程度上降低α-Al_2O_3的相变温度，而获得的颗粒大量团聚。 AT对氧化铝的相变具有巨大的潜在协同作用，降低了α-Al_2O_3的相变温度，降低了颗粒间颈缩的趋势。因此，粉末颗粒的分散性显着改善。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号