Microstructure Refinement and Physical Properties of Ag-SnO2 Based Contact Materials Prepared by High-Energy Ball Milling

被引：12

作者：

Cosovic, V. ^{[1
]}

Pavlovic, M. ^{[1
]}

Cosovic, A. ^{[2
]}

Vulic, P. ^{[3
]}

Premovic, M. ^{[4
]}

Zivkovic, D. ^{[5
]}

Talijan, N. ^{[1
]}

机构：

[1] Univ Belgrade, Inst Chem Technol & Met, Belgrade, Serbia

[2] Inst Technol Nucl & Other Mineral Raw Mat, Belgrade, Serbia

[3] Univ Belgrade, Fac Min & Geol, Crystallog Lab, Belgrade, Serbia

[4] Univ Pristina, Fac Tech Sci, Kosovska Mitrovica, Serbia

[5] Univ Belgrade, Tech Fac Bor, Belgrade 11001, Serbia

来源：

SCIENCE OF SINTERING | 2013年 / 45卷 / 02期

关键词：

Silver-metal oxide electrical contacts; High-energy ball milling; powder metallurgy; Microstructure; Physical properties;

D O I：

10.2298/SOS1302173C

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：

High energy ball milling was used in order to improve dispersion of metal oxide in Ag-SnO2 electrical contact materials. The processed Ag-SnO2 (92: 8) and Ag-SnO2In2O3 (87.8:9.30:2.9) powder mixtures were subsequently consolidated to bulk solid pieces by conventional powder metallurgy method. The characterization of the prepared samples included microstructural analysis by XRD and SEM, as well as measurements of physical properties such as density, hardness and electrical conductivity. The results of X-Ray analysis point to reduction of crystallite size after milling of about ten times. Microstructures of sintered Ag-SnO2 and Ag-SnO2 In2O3 materials display very fine dispersion of the oxide components in silver matrix. Somewhat higher uniformity was obtained for Ag-SnO2 In2O3 material which was illustrated by results of SEM analysis and more consistent microhardness values. The obtained values of studied physical properties were found to be in accordance with observed higher dispersion of metal oxide particles and comparable to properties of commercial electrical contact materials of this type.

引用

页码：173 / 180

页数：8

共 12 条

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