The Effect of Aluminum on Electrical Properties of ZnO Varistors

被引：55

作者：

Long, Wangcheng ^{[1
]}

Hu, Jun ^{[1
]}

Liu, Jun ^{[1
]}

He, Jinliang ^{[1
]}

Zong, Rong ^{[1
]}

机构：

[1] Tsinghua Univ, State Key Lab Power Syst, Dept Elect Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2010年 / 93卷 / 09期

关键词：

ZINC-OXIDE VARISTORS; NONLINEARITY; IMPROVEMENT; CERAMICS; DONOR; AL2O3; GRAIN;

D O I：

10.1111/j.1551-2916.2010.03787.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper focuses on the effect of aluminum additive on electrical properties of ZnO varistors. From the normalized current density versus electric field (J-E) curves, the influence of Al ionic additive on the leakage current and the residual voltage ratio of the sample is very intuitive. The barrier height of the grain boundary decreases with an increase in the Al dopant, but the donor density increases first and then decreases, which reaches the maximum while Al ionic 0.25% is added. The residual voltage ratio changes with the unevenness of ZnO grain sizes. Furthermore, the influence factors of the residual voltage ratio are analyzed.

引用

页码：2441 / 2444

页数：4

共 16 条

[1] Influence of ohmic grain boundaries in ZnO varistors [J].

Bartkowiak, M ;

Mahan, GD ;

Modine, FA ;

Alim, MA .

JOURNAL OF APPLIED PHYSICS, 1996, 79 (01) :273-281

[2] NONLINEAR CURRENTS IN VORONOI NETWORKS [J].

BARTKOWIAK, M ;

MAHAN, GD .

PHYSICAL REVIEW B, 1995, 51 (16) :10825-10832

[3] Characteristics of ZnO-based varistor ceramics doped with Al2O3 [J].

Bernik, S. ;

Daneu, N. .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 2007, 27 (10) :3161-3170

[4] IMPROVED VARISTOR NONLINEARITY VIA DONOR IMPURITY DOPING [J].

CARLSON, WG ;

GUPTA, TK .

JOURNAL OF APPLIED PHYSICS, 1982, 53 (08) :5746-5753

[5]

Clarke DR, 1999, J AM CERAM SOC, V82, P485

[6]

FAN J, 1993, BRIT CERAM T, V92, P221

[7] Donor and acceptor doping of zinc oxide varistors [J].

Gilbert, I ;

Freer, R .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (04) :945-954

[8] EFFECT OF MINOR DOPING ON THE HIGH-CURRENT APPLICATION OF THE ZNO VARISTOR [J].

GUPTA, TK .

FERROELECTRICS, 1990, 102 :391-396

[9] MICROSTRUCTURAL ENGINEERING THROUGH DONOR AND ACCEPTOR DOPING IN THE GRAIN AND GRAIN-BOUNDARY OF A POLYCRYSTALLINE SEMICONDUCTING CERAMIC [J].

GUPTA, TK .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (12) :3280-3295

[10] APPLICATION OF ZINC-OXIDE VARISTORS [J].

GUPTA, TK .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (07) :1817-1840

← 1 2 →