PHYSICAL AND CHEMICAL-PROPERTIES OF METAL-OXIDE ADDITIONS TO AG-SNO2 CONTACT MATERIALS AND PREDICTIONS OF ELECTRICAL PERFORMANCE

被引：82

作者：

JEANNOT, D ^{[1
]}

PINARD, J ^{[1
]}

RAMONI, P ^{[1
]}

JOST, EM ^{[1
]}

机构：

[1] CHEMET CORP,ATTLEBORO,MA 02703

来源：

IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY PART A | 1994年 / 17卷 / 01期

关键词：

Arcing contact application - Chemical properties - Doping agents - Laser surface fusion - Liquid silver - Metal oxides - Wettability - X ray diffraction;

D O I：

10.1109/95.296363

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The new contact material AgSnO2, which is replacing AgCdO in many applications, requires the addition of doping agents to improve electrical contact performance. These additions effect thermodynamic stability, the wettability of the SnO2 surface by liquid silver, as well as the microstructure of the area melted by the electric arc. This work considers the frequently used dopants WO3, MoO3, Bi2O3, CuO and RuO2, as well as others: ZnO, Ta2O5, HgO, RuO2, Sb2O3, TeO2 and TaC. DTA and TGA analyses are performed on mixtures of these metal oxides with SnO2, Ag, and AgSnO2. Reactions products, if present, are characterized by x-ray diffraction. The wetting angles of molten silver on surfaces of these mixtures are established. The results are used to interpret the microstructures found in the molten regions of AgSnO2 materials doped with these substances. These structures are interpreted and related to performance in arcing contact applications.

引用

页码：17 / 23

页数：7

共 16 条

[1] MODIFICATION IN THE MICROSTRUCTURE OF MATERIALS WITH AIR-BREAK SWITCHING AT HIGH CURRENTS [J].

AMBIER, J ;

BOURDA, C ;

JEANNOT, D ;

PINARD, J ;

RAMONI, P .

IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY, 1991, 14 (01) :153-161

[2]

BEHRENS N, 1982, 11TH P INT C EL CONT, P203

[3]

BHM W, 1983, BMFT FBT83196

[4]

BOHM W, 1981, 27TH P HOLM C EL CON, P51

[5]

BOHM W, 1983, BMFT FBT83248

[6]

DOREMIEUX JL, 1980, RGE 89, P587

[7] INVESTIGATION ON THE SWITCHING BEHAVIOR OF AGSNO2 MATERIALS IN COMMERCIAL CONTACTORS [J].

GENGENBACH, B ;

MAYER, U ;

MICHAL, R ;

SAEGER, KE .

IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY, 1985, 8 (01) :58-63

[8] CRACKING MECHANISMS IN AG-SNO2 CONTACT MATERIALS AND THEIR ROLE IN THE EROSION PROCESS [J].

KANG, SH ;

BRECHER, C .

IEEE TRANSACTIONS ON COMPONENTS HYBRIDS AND MANUFACTURING TECHNOLOGY, 1989, 12 (01) :32-38

[9]

KIM JH, 1984, Patent No. 20760

[10]

LAMBERT C, 1989, 34TH P HOLM C EL CON, P69

← 1 2 →