采用基于Pechini法的低温燃烧工艺制备了SrCe0.95Y0.05O3-x(SCY)前驱物.前驱物在900℃经0.5 h的煅烧处理即可得到纯的粒度在7～25 nm范围内的SrCe0.95Y0.05O3-x固体电解质纳米粉.将煅烧的粉体在18 MPa压力下压成片状的素坯,在900～1 500℃的温度范围内于空气中烧结索坯10 h.用X射线衍射(XRD)表征煅烧粉体的晶体结构,用扫描电镜(SEM)和透射电镜(TEM)表征了煅烧粉体和烧结体的形貌和粒度,采用阿基米德法测量了烧结体的密度.结果表明:温度达到1 000℃时,烧结体的径向收缩率和密度随着温度的升高而显著增加;温度达1 300℃时烧结体的径向收缩率和密度趋于恒定,得到相对密度高于96%、平均粒径约为3.68 μm的SrCe095Y0.05O3-x固体电解质陶瓷体.
参考文献
| [1] | Iwahara H. .TECHNOLOGICAL CHALLENGES IN THE APPLICATION OF PROTON CONDUCTING CERAMICS[J].Solid state ionics,1995(0):289-298. |
| [2] | Iwahara H .Oxide-ionic and protonic conductors based on perovskite-type oxides and their possible applications[J].Solid State Ionics,1992,52:99-104. |
| [3] | Reichel U;Arons R R;Schilling W .Investigation of n-type electronic defects in the protonic conductor SrCe1-xYxO3-x[J].Solid State Ionics,1996,86-88:639-654. |
| [4] | T. He;P. Ehrhart .An optical in-situ study of BaCeO_3 at high temperatures[J].Solid state ionics,1996(1):633-638. |
| [5] | Marnellos G.;Rizou A.;Stoukides M.;Sanopoulou O. .THE USE OF PROTON CONDUCTING SOLID ELECTROLYTES FOR IMPROVED PERFORMANCE OF HYDRO- AND DEHYDROGENATION REACTORS[J].Solid state ionics,1997(1/4):375-383. |
| [6] | Schneller T.;Schober T. .Chemical solution deposition prepared dense proton conducting Y-doped BaZrO3 thin films for SOFC and sensor devices[J].Solid state ionics,2003(3/4):131-136. |
| [7] | Song SJ;Wachsman ED;Rhodes J;Dorris SE;Balachandran U .Hydrogen permeability of SrCe(1-X)MxO(3-delta) (x=0.05, M=Eu, Sm)[J].Solid state ionics,2004(1/2):99-105. |
| [8] | Alberti G.;Casciola M. .Solid state protonic conductors, present main applications and future prospects[J].Solid state ionics,2001(1/4):3-16. |
| [9] | Grover Coors W .Protonic ceramic fuel cells for highefficiency operation with methane[J].Journal of Power Sources,2003,118:150-156. |
| [10] | 郑文君;庞文琴 .钙钛矿型复合氧化物氢离子导体研究现状[J].功能材料,1997,28(03):242-246. |
| [11] | U. Reichel;R.R. Arons;W. Schilling .Investigation of n-type electronic defects in the protonic conductor SrCe_(1-x)Y_xO_(3-δ)[J].Solid state ionics,1996(1):639-645. |
| [12] | QIU Li-gan;MA Gui-lin;WEN Di-jiang .Ionic conduction in BaxCe0.8 Er0.2O3-α[J].Solid State Ionics,2004,166:69-75. |
| [13] | Takatori K;Tani T;Watanabe N et al.Preparation and characterization of nano-structured ceramic powders synthesized by emulsion combustion method[J].Journal of Nanoparticle Research,1999,1:197-204. |
| [14] | 耿树江;邵忠宝;牛盾 等.溶胶-凝胶法合成La1-xSrxCoO3粉末[J].中国有色金属学报,1998,8(zk):61-63. |
| [15] | 张建敏,王吉德,岳凡,王疆英.致密SrCe0.95Y0.05O3-δ在含氢气氛下的电化学性质研究[J].无机材料学报,2001(03):559-562. |
| [16] | LIU S M;TAN X Y;LI K et al.Synthesis of strontium cerates-based perovskite ceramics via water-soluble complex precursor routes[J].Ceramics International,2002,28:327-335. |
| [17] | Meilin Liu;Dongsheng Wang .Preparation of La_(1-z)Sr_zCo_(1-y)Fe_yO_(3-x) thin films, membranes, and coatings on dense and porous substrates[J].Journal of Materials Research,1995(12):3210-3221. |
| [18] | Purohit RD.;Mathews MD.;Saha S.;Tyagi AK. .Combustion synthesis and bulk thermal expansion studies of Ba and Sr thorates[J].Journal of Nuclear Materials: Materials Aspects of Fission and Fusion,2000(1):51-55. |
| [19] | 李汶霞,殷声.低温燃烧合成陶瓷微粉[J].硅酸盐学报,1999(01):70-78. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%