采用传统陶瓷工艺制备了Sb2O3掺杂的Pr6O11压敏电阻,并利用现代分析测试技术对其微结构和电学性能进行了研究.样品的相结构比较简单,除了Pr6O11主相外,未发现明显的第二相.样品的相对密度及晶粒尺寸随着Sb2O3掺杂量的提高而降低.非线性系数、压敏电压和晶界电阻都呈现出先降低后增加的趋势,非线性系数最高可达134.分析表明,Sb掺杂不与Pr6O11发生固相反应,其高温分解所产生的蒸汽压会降低Pr6O11压敏电阻的相对密度、晶粒尺寸及势垒高度,电学性能的变化要归结于相对密度、晶粒尺寸及势垒高度的共同作用.
参考文献
| [1] | David R. Clarke .Varistor ceramics[J].Journal of the American Ceramic Society,1999(3):485-502. |
| [2] | S. A. Pianaro;P. R. Bueno;E. Longo;J. A. Varela .A new SnO_2-based varistor system[J].Journal of Materials Science Letters,1995(10):692-694. |
| [3] | Yang SL.;Wu JM. .EFFECTS OF NB2O5 IN (BA,BI,NB)-ADDED TIO2 CERAMIC VARISTORS[J].Journal of Materials Research,1995(2):345-352. |
| [4] | Lei Meng;Guorong Li;Liaoying Zheng .The Effect of Bi_2O_3/SiO_2 Molar Ratio and Annealing on the dc Degradation of ZnO Varistors[J].Journal of the American Ceramic Society,2011(8):2300-2303. |
| [5] | Hirose S;Nishita K;Niimi H .Influence of distribution of additives on electrical potential barrier at grain boundaries in ZnO-based multilayered chip varistor[J].Journal of Applied Physics,2006(8):83706-1-83706-7-0. |
| [6] | Chen WP.;Lu SG.;Chan HLW. .Influence of electroless nickel plating on I-V characteristics and its implications for reliability in ZnO-based ceramic varistors[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2003(1/3):70-73. |
| [7] | Glot, AB;Gaponov, AV;Sandoval-Garcia, AP .Electrical conduction in SnO2 varistors[J].Physica, B. Condensed Matter,2010(2):705-711. |
| [8] | Naoki Ohashi;Ken Kataoka;Takeshi Ohgaki .Synthesis and Characterization of ZnO/Glass/ZnO Structures Showing Highly Nonlinear Current-Voltage Characteristics[J].Materials transactions,2009(5):1060-1066. |
| [9] | C. Tsonos;A. Kanapitsas;D. Triantis .Interface states and MWS polarization contributions to the dielectric response of low voltage ZnO varistor[J].CERAMICS INTERNATIONAL,2011(1):207-214. |
| [10] | Peiteado M;De la Rubia MA;Fernandez JF;Caballero AC .Thermal evolution of ZnO-Bi2O3-Sb2O3 system in the region of interest for varistors[J].Journal of Materials Science,2006(8):2319-2325. |
| [11] | Kirianov A.;Ohsato H.;Kohzu N.;Kishi H.;Ozaki N. .Studies on the solid solution of Mn in BaTiO3[J].Japanese journal of applied physics,2001(9B):5619-5623. |
| [12] | Carlsson JM.;Domingos HS.;Bristowe PD.;Hellsing B. .Electronic properties of a grain boundary in Sb-doped ZnO[J].Journal of Physics. Condensed Matter,2001(44):9937-9943. |
| [13] | Kang ZC.;Eyring L. .Lattice oxygen transfer in fluorite-type oxides containing Ce, Pr, and/or Tb[J].International Journal of Quantum Chemistry,2000(1):129-137. |
| [14] | Jianying Li;Shaohua Luo;Weihua Yao;Zhongtai Zhang .Role of second phase in (Nb,Ce,Si,Ca)-doped TiO_2 varistor ceramics[J].Materials Letters,2003(24/25):3748-3754. |
| [15] | Sakyo Hirose;Yoji Yamamoto;Hideaki Niimi .Effect of local electrical properties on the electrostatic discharge withstand capability of multilayered chip ZnO varistors[J].Journal of Applied Physics,2008(1):013701-1-013701-12-0. |
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%