成型压力对盐助燃烧合成超细CeB_6粉体粒度和纯度的影响及其作用机制
|
摘要
在B_2O_3-CeO_2-Mg体系中引入发热剂KClO_3,利用盐助燃烧法制备超细高纯度CeB_6粉体,研究成型压力对盐助燃烧合成超细CeB_6粉体粒度和纯度的影响。借用SEM、EDS、TEM和XRD探讨了盐助燃烧合成法制备CeB_6粉体的形成机理。结果表明,燃烧合成的主要产物为CeB_6,且随着成型压力的增大,浸出后产物的平均颗粒尺寸略微有增加,平均尺寸为0.830～0.930μm,整体粒度分布较为均匀;浸出产物的纯度随着成型压力的增加呈现出先增加后减小的趋势,当压力为20 MPa时,纯度达到最大值99.0%,但不同压力下各试样纯度均在98.0%以上。
The exothermal agent KClO_3 was added to the B_2O_3-Ce O_2-Mg system to prepare the ultra-fine CeB_6 powders via salt-assisted combustion synthesis. The products were analyzed by XRD, SEM, EDS and TEM. The formation mechanisms of the CeB_6 as well as the effect of compaction pressure on the phase composition, average particle size and purity of the products after leaching were studied. Results show that the main product of combustion synthesis is CeB_6. With increasing the compaction pressure, the average particle size of the synthesis products increases slightly after leaching, which is 0.830～0.930 μm and the particle size distribution of powders is uniform. However, the purity of CeB_6 reaches a maximum of 99.0 wt% when the pressure is 20 MPa. The purity of all products under different pressures exceeds 98.0%.
The exothermal agent KClO_3 was added to the B_2O_3-Ce O_2-Mg system to prepare the ultra-fine CeB_6 powders via salt-assisted combustion synthesis. The products were analyzed by XRD, SEM, EDS and TEM. The formation mechanisms of the CeB_6 as well as the effect of compaction pressure on the phase composition, average particle size and purity of the products after leaching were studied. Results show that the main product of combustion synthesis is CeB_6. With increasing the compaction pressure, the average particle size of the synthesis products increases slightly after leaching, which is 0.830～0.930 μm and the particle size distribution of powders is uniform. However, the purity of CeB_6 reaches a maximum of 99.0 wt% when the pressure is 20 MPa. The purity of all products under different pressures exceeds 98.0%.
引文
[1]Dou Z,Zhang T,Guo Y et al.Journal of Rare Earths[J],2012,30(11):1129
[2]Takeda M,Fukuda T,Domingo F et al.Journal of Solid State Chemistry[J],2004,177(2):471
[3]Liang Chaolong(梁超龙),Zhang Xin(张忻),Liu Hongliang(刘洪亮).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2016,45(12):3267
[4]Togawa K,Baba H,Onoe K.Nuclear Instruments&Methods in Physics Research[J],2004,528(1):312
[5]Zou C Y,Zhao Y M,Xu J Q.Journal of Crystal Growth[J],2006,291(1):112
[6]Bao Lihong,Zhang Jiuxing,Zhou Shenlin.Journal of Rare Earths[J],2011,29(6):580
[7]Guo Yongnan(郭永楠).Thesis for Doctorate(博士论文)[D].Shenyang:Northeastern University,2013
[8]Dou Z H,Zhang T A,He J C.Advanced Materials Research[J],2011,236-238:1670
[9]Bao Lihong,Ming Ming,Tegus O.Journal of Inorganic Materials(无机材料学报)[J],2015,30(10):1110
[10]Bakr M,Kawai M,Kii T et al.IEEE Transactions on Electron Devices[J],2016,63(3):1326
[11]Bakr M,Kawai M,Kii T et al.Journal of Applied Physics[J],2015,117(6):443
[12]Peng Chao(彭超),Zhang Ting’an(张廷安),Dou Zhihe(豆志河)et al.Proceedings of the Seventeenth National Conference on Metallurgical Reaction Engineering(第17届全国冶金反应工程学学术会议论文集)[C].Beijing:China Metal Society,2013
[13]Zhang Tingan(张廷安),Dou Zhihe(豆志河),Liu Yan(刘燕)et al.Chinese Scientific and Technological Achievements(中国科技成果)[J],2015,21:79
[14]Jiang Lixia(姜利霞).Thesis for Doctorate(博士论文)[D].Tianjin:Tianjin University,2007
[15]Torgasin K,Morita K,Zen H et al.Phys Rev Accel Beams[J],2017,20(7):73 401
[16]Martin M J,Bonde J,Gekelman W et al.Review of Scientific Instruments[J],2015,86(5):53 507
[17]Akgün B,Sevin?N,?amurlu H E et al.International Journal of Materials Research[J],2013,104(4):403
[18]Amara M,Galéra R M.Physical Review Letters[J],2012,108(2):26 402
[19]Peng Kewu(彭可武),Ma Heli(马贺利),Chen Ren(陈韧)et al.Chinese Journal of Rare Metal(稀有金属)[J],2009,33(6):850
[20]Ou Yujing,La Peiqing,Zhu Dandan et al.Advancesin Materials Science and Engineering[J],2015(8):1
[21]Zhou Shenlin(周身林),Zhang Jiuxing(张久兴),Liu Danmin(刘丹敏)et al.Journal of Inorganic Materials(无机材料学报)[J],2009,24(4):793
[22]Dou Zhihe,Zhang Ting’an,Liu Yan el al.Journal of Rare Earths[J],2011,29(10):986
[23]Huang Xia(黄霞).Thesis for Doctorate(博士论文)[D].Dalian:Dalian University of Technology,2009
[2]Takeda M,Fukuda T,Domingo F et al.Journal of Solid State Chemistry[J],2004,177(2):471
[3]Liang Chaolong(梁超龙),Zhang Xin(张忻),Liu Hongliang(刘洪亮).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2016,45(12):3267
[4]Togawa K,Baba H,Onoe K.Nuclear Instruments&Methods in Physics Research[J],2004,528(1):312
[5]Zou C Y,Zhao Y M,Xu J Q.Journal of Crystal Growth[J],2006,291(1):112
[6]Bao Lihong,Zhang Jiuxing,Zhou Shenlin.Journal of Rare Earths[J],2011,29(6):580
[7]Guo Yongnan(郭永楠).Thesis for Doctorate(博士论文)[D].Shenyang:Northeastern University,2013
[8]Dou Z H,Zhang T A,He J C.Advanced Materials Research[J],2011,236-238:1670
[9]Bao Lihong,Ming Ming,Tegus O.Journal of Inorganic Materials(无机材料学报)[J],2015,30(10):1110
[10]Bakr M,Kawai M,Kii T et al.IEEE Transactions on Electron Devices[J],2016,63(3):1326
[11]Bakr M,Kawai M,Kii T et al.Journal of Applied Physics[J],2015,117(6):443
[12]Peng Chao(彭超),Zhang Ting’an(张廷安),Dou Zhihe(豆志河)et al.Proceedings of the Seventeenth National Conference on Metallurgical Reaction Engineering(第17届全国冶金反应工程学学术会议论文集)[C].Beijing:China Metal Society,2013
[13]Zhang Tingan(张廷安),Dou Zhihe(豆志河),Liu Yan(刘燕)et al.Chinese Scientific and Technological Achievements(中国科技成果)[J],2015,21:79
[14]Jiang Lixia(姜利霞).Thesis for Doctorate(博士论文)[D].Tianjin:Tianjin University,2007
[15]Torgasin K,Morita K,Zen H et al.Phys Rev Accel Beams[J],2017,20(7):73 401
[16]Martin M J,Bonde J,Gekelman W et al.Review of Scientific Instruments[J],2015,86(5):53 507
[17]Akgün B,Sevin?N,?amurlu H E et al.International Journal of Materials Research[J],2013,104(4):403
[18]Amara M,Galéra R M.Physical Review Letters[J],2012,108(2):26 402
[19]Peng Kewu(彭可武),Ma Heli(马贺利),Chen Ren(陈韧)et al.Chinese Journal of Rare Metal(稀有金属)[J],2009,33(6):850
[20]Ou Yujing,La Peiqing,Zhu Dandan et al.Advancesin Materials Science and Engineering[J],2015(8):1
[21]Zhou Shenlin(周身林),Zhang Jiuxing(张久兴),Liu Danmin(刘丹敏)et al.Journal of Inorganic Materials(无机材料学报)[J],2009,24(4):793
[22]Dou Zhihe,Zhang Ting’an,Liu Yan el al.Journal of Rare Earths[J],2011,29(10):986
[23]Huang Xia(黄霞).Thesis for Doctorate(博士论文)[D].Dalian:Dalian University of Technology,2009