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Titolo:
Erosion and contact resistance performance of materials for sliding contacts under arcing
Autore:
Ben Jemaa, N; Morin, L; Jeannot, D; Hauner, F;
Indirizzi:
Univ Rennes 1, F-35042 Rennes, France Univ Rennes 1 Rennes France F-35042 niv Rennes 1, F-35042 Rennes, France Metalor Technol, F-28190 Courville sur Eure, France Metalor Technol Courville sur Eure France F-28190 ville sur Eure, France
Titolo Testata:
IEEE TRANSACTIONS ON COMPONENTS AND PACKAGING TECHNOLOGIES
fascicolo: 3, volume: 24, anno: 2001,
pagine: 353 - 357
SICI:
1521-3331(200109)24:3<353:EACRPO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREAK;
Keywords:
arcing; automotive application; contact resistance; erosion and wear; materials; sliding contact;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
--discip_EC--
Citazioni:
9
Recensione:
Indirizzi per estratti:
Indirizzo: Ben Jemaa, N Univ Rennes 1, F-35042 Rennes, France Univ Rennes 1 Rennes France F-35042 F-35042 Rennes, France
Citazione:
N. Ben Jemaa et al., "Erosion and contact resistance performance of materials for sliding contacts under arcing", IEEE T COMP, 24(3), 2001, pp. 353-357

Abstract

In our previous work, we have investigated copper sliding switching contacts for automotive power applications. In order to improve their reliability, we have studied in this present paper, alternative materials to copper such as silver based materials (Ag, AgSnO2, AgC, and AgCNi). Their performance was evaluated by measuring mass variations and contact resistance stability during sliding. The contacts are operated in a test machine during 50 000 sliding operations, under inductive loads which produce long arcs, or under lamp loads which produce a short arc. In most cases, we have seen a significant wear of the anode compared to the cathode. We believe that the wear process for the sliding contact is the abrasion of the track by a rough contact surface. This roughness is produced and renewed by material transfer because of arcing. Regarding this wear, we show the medium performance of Ag and Cu contacts, while the worst performance is obtained with AgC and AgCNi, which make these latter materials unsuitable. Regarding contact resistance, we have measured low values <1 m<Omega> for AgC, AgCNi, and Ag. With AgSnO2 and Cu contacts, the resistance can reach high values, especially with an inductive load, which make these latter materials unsuitable. Concerning the effect of operating parameters, we show that polarity may emphasize the already poor performance of a high wear anode by disturbing the sliding motion. In addition, contact force and shape size are found to act on material performance: Low force and large shape (cylinder) reduce wearand enhance resistance whereas high force and small shape increases wear and lowers contact resistance.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 15/07/20 alle ore 21:30:49