采用廉价的工业废料硼酸钙(其主要成分为CaO和B2O3,其质量分数共计约75%,下文均简称为硼酸钙)为原料,原料中不足的硼源由B4C或硼酐取代,通过碳热还原法低成本合成CaB6粉体.实验结果表明以B4C为反应物所制备得到的CaB6粉体的转化率高于以硼酐为反应物的试样.以硼酸钙,B4C和碳为原料的CaB6粉体合成的最佳烧结工艺为1 923 K保温30 min.
参考文献
| [1] | Xu JQ;Zhao YM;Zou CY;Ding QW .Self-catalyst growth of single-crystalline CaB6 nanostructures[J].International Journal of Quantum Chemistry,2007(9):2577-2580. |
| [2] | 梁丽梅,张琳,闵光辉.六硼化钙纳米粉末的吸收光谱研究[J].山东大学学报（工学版）,2009(01):118-121. |
| [3] | O. Yildiz;R. Telle;C. Schmalzried .Phase transformation of transient B_4C to CaB_6 during production of CaB_6 from colemanite[J].Journal of the European Ceramic Society,2005(14):3375-3381. |
| [4] | Shuqi Zheng;Guanghui Min;Zengda Zou .Synthesis of Calcium Hexaboride Powder via the Reaction of Calcium Carbonate with Boron Carbide and Carbon[J].Journal of the American Ceramic Society,2001(11):2725-2727. |
| [5] | Young D;Fisk Z;Thompson J et al.Parasitic ferromagnetism in a hexaboride[J].NATURE,2002,420:143-144. |
| [6] | J. X. Cao;Y. Zhu;Z. Q. Yang;R. Q. Wu .Origin of the magnetism in CaB6: A first-principles study[J].Physical review, B. Condensed matter and materials physics,2009(13):132404:1-132404:4. |
| [7] | 郑树起,韩建德,闵光辉,邹增大,杨丽霞,王维倜.CaB6的反应合成[J].粉末冶金技术,2001(05):259-261. |
| [8] | 王旭,翟玉春,谢宏伟.熔盐电解法制备CaB6及其表征[J].金属学报,2008(10):1243-1246. |
| [9] | 杨丽霞,闵光辉,于化顺,韩建德,王维倜.CaB6陶瓷研究的进展[J].硅酸盐学报,2003(07):687-691,697. |
| [10] | 豆志河,张廷安,牛仁通,潘蓉.燃烧合成法制备CaB6的研究[J].无机材料学报,2008(01):150-154. |
| [11] | Liang Shi;Yunle Gu;Luyang Chen;Zeheng Yang;Jianhua Ma;Yitai Qian .Low temperature synthesis and characterization of cubic CaB_6 ultrafine powders[J].Chemistry Letters,2003(10):958-959. |
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