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Received: 2006-12-19

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.3 P.449~452

http://doi.org/10.1631/jzus.2007.A0449


Study on the failure mechanism of Ag-Ce contacts in DC level


Author(s):  MENG Fan-bin, LU Jian-guo, LU Ning-yi, CHEN Zhi-chao, CHEN Qi

Affiliation(s):  School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China; more

Corresponding email(s):   fanbinmeng@126.com

Key Words:  Relays, Electric contact, Failure analysis


MENG Fan-bin, LU Jian-guo, LU Ning-yi, CHEN Zhi-chao, CHEN Qi. Study on the failure mechanism of Ag-Ce contacts in DC level[J]. Journal of Zhejiang University Science A, 2007, 8(3): 449~452.

@article{title="Study on the failure mechanism of Ag-Ce contacts in DC level",
author="MENG Fan-bin, LU Jian-guo, LU Ning-yi, CHEN Zhi-chao, CHEN Qi",
journal="Journal of Zhejiang University Science A",
volume="8",
number="3",
pages="449~452",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A0449"
}

%0 Journal Article
%T Study on the failure mechanism of Ag-Ce contacts in DC level
%A MENG Fan-bin
%A LU Jian-guo
%A LU Ning-yi
%A CHEN Zhi-chao
%A CHEN Qi
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 3
%P 449~452
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A0449

TY - JOUR
T1 - Study on the failure mechanism of Ag-Ce contacts in DC level
A1 - MENG Fan-bin
A1 - LU Jian-guo
A1 - LU Ning-yi
A1 - CHEN Zhi-chao
A1 - CHEN Qi
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 3
SP - 449
EP - 452
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A0449


Abstract: 
Nominal contact resistance, minimum erosion and material transfer are required with low cost materials working in a wide currents range for DC relays. Ag-Ni contact materials have low contact resistance, but the erosion and material transfer are large at high current level. Ag-SnO2 contact materials have good anti-welding properties and resistance to arc erosion, but they have large contact resistance during working and are easily block SnO2 from flocking together on the surface at low current level. In this paper, the failure mechanisms of Ag-Ce contact material were studied. The surface morphologies of the contacts after electrical endurance test for Ag-Ce contact material were compared with that of Ag-Ni and Ag-SnO2 contact materials. The effect of Ce on the surface morphologies of the contacts after electrical endurance test was analyzed.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Cristian, V., 1993. Influence of Contact Material on the Performance of Power Print Relays in Various Load Ranges. Proceedings of 41st Relay Conference, California, p.21-27.

[2] Erbay, A., 1988. Powder Metallurgy Application in Industry. M.Sc. Thesis, Sakarya University, Turkey.

[3] Huck, M., Kraus, A., Michal, R., Saeger, K.E., 1990. Guidelines for the Use of Ag/SnO2 Contact Materials in Switching Devices for Low Voltage Power Engineering. Proceedings of 15th ICEC, Montreal, p.133-318.

[4] Jemaa, N.B., 2002. Contacts Conduction and Switching in DC Levels. Proceedings of 48th IEEE Holm Conference on Electric Contacts, Orlando, p.1-15.

[5] Lu, J.G., Wang, J.Q., Zhao, J.Y., Wen, M., Wang, B.Z., Wang, X.H., 2002. A new contact material Ag/SnO2-La2O3-Bi2O3. Rare Met., 21(4):289-293.

[6] Michal, R., Saeger, K.E., 1989. Metallurgical aspect of silver-based contact materials for air-break switching devices for power engineering. IEEE Trans. Comp. Hybrids Manuf. Technol., 12(1):71-81.

[7] Myers, M., 1993. Mechanical Properties and Heading Characteristics of Some Ag/CdO and Ag/SnO2 Compositions. Proceedings of 39th IEEE Holm Conference on Electric Contacts, Pittsburgh, p.45-50.

[8] Rieder, W., 1988. Federal Electric Company. Organize Sanayi Sakarya Turkey (Private Communication).

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