|本期目录/Table of Contents|

[1]胡威峰,喻俊,曹江雄,等.磷灰石型La9.33(SiO4)6O2电解质的烧结及性能[J].武汉工程大学学报,2011,(01):48-53.[doi:10.3969/j.issn.16742869.2011.01.013]
　HU Wei feng,YU Jun,CAO Jiang xiong,et al.Research of sintering and property of lanthanum silicate oxyapatite electrolyte materials[J].Journal of Wuhan Institute of Technology,2011,(01):48-53.[doi:10.3969/j.issn.16742869.2011.01.013]
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磷灰石型La9.33(SiO4)6O2电解质的烧结及性能(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年01期
页码:
48-53
栏目:
材料科学与工程
出版日期:
2011-01-30

文章信息/Info

Title:
Research of sintering and property of lanthanum silicate
oxyapatite electrolyte materials
文章编号:
16742869(2011)01004806
作者:
胡威峰; 喻俊; 曹江雄; 黄志良*; 池汝安; 李伟; 宋吉巍
武汉工程大学材料科学与工程学院,湖北 武汉 430074
Author(s):
HU Weifeng;  YU Jun;  CAO Jiangxiong;  HUANG Zhiliang;  LI Wei;  SONG Jiwei
School of Material Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
燃烧合成; 硅酸镧; 固体电解质; 烧结; 离子电导率
Keywords:
combustion; lanthanum silicate; solid electrolyte;  sintering;  ionic conductivity
分类号:
Q611.4;Q653
DOI:
10.3969/j.issn.16742869.2011.01.013
文献标志码:
A
摘要:
在燃烧法制得的磷灰石型LSO电解质纳米粉体基础上,研究了预处理、成型压力、烧结温度和保温时间对LSO烧结体致密度的影响.烧结实验结果表明:球磨预处理和合适的成型压力,可以有效消除颗粒间的团聚、降低烧结温度和提高致密度;最佳成型压力为225 MPa;最佳烧结温度为1 400 ℃下保温3 h,烧结体的致密度高达96%.运用交流阻抗谱法研究了LSO烧结体的电性能,结果表明:烧结体随温度的升高,晶界电阻逐渐减小,晶粒电阻逐渐占据主导;烧结体电导率与温度的关系符合Arrhenius经验公式,700 ℃时离子电导率达到4.38×10-3 s/cm.
Abstract:
On the basic of use combustion to prepare the LSO,batch experiment revealed the density of LSO sintered body was influenced by the pretreatment, forming pressure, sintering temperature and holding temperature. The results showed that attrition pretreatment and fitting forming pressure could eliminate interagglomerate, lower sinter point and improve density of the sample efficiently.The fitting forming pressure is 225 MPa.The best sintering temperature is 1 400 ℃ for 3 hours. Electrochemical impedance spectroscopy (EIS) was utilized to study the electrical property of the sinter body. The results demonstrated that along with the test temperature rose, grain boundary resistance decreased and grain resistance increased. The relationship between sample’s conductivity and temperature was in accord with empirical formula of Arrhenius. The sintered body shows high ionic conductivity (4.38×10-3 s·cm-1 at 700 ℃).

参考文献/References:

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［5］Shaula A L, Kharton V V, Waerenborgh J C, et al. Oxygen ionic and electronic transport in apatite ceramics［J］.J Eur Ceram Soc,2005,25:25832586.
［6］Irvine J T S, Sinclair D C, West A R.Electroceramics:characterization by impedance spectroscopy［J］.Adv Mater,1990,2(3):132138.
［7］Nakayama S, Aono H, Sadaoka Y.Ionic conductivity of Ln10(SiO4)6O3(Ln=La,Nd,Sm,Gd and Dy)［J］.Chem Lett,1995,24:431.
［8］Nakayama S,Higuchi Y, Kondo Y, et al. Effects of cationor oxide iondefect on conductivities of apatitetype LaGeO system ceramics［J］.Solid State Ionics,2004,170:219223.

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备注/Memo

备注/Memo:
收稿日期：20100917基金项目：湖北省教育厅重大项目（z20091501）;国家自然科学基金项目（50874081）作者简介：胡威峰（1986），男，湖北黄冈人，在读硕士研究生.研究方向：固体电解质.指导老师：黄志良，男，教授，博士.研究方向：无机非金属材料的功能与应用.
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