Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts最新文献_第9页

The life and times of an A-spot-a tutorial on sliding contacts a点的寿命和时间——滑动触点教程

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489674

E.W. Glossbrenner

引用次数: 8

Effect of electrical current on the morphology and kinetics of formation of intermetallic phases in bimetallic aluminum-copper joints 电流对双金属铝铜接头中金属间相形态及形成动力学的影响

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489685

M. Braunovic, N. Aleksandrov

引用次数: 27

Evaluation of contact surface configuration with a scanning laser microscope 用扫描激光显微镜评价接触面结构

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489683

K. Niizuma, M. Hasegawa

{"title":"Evaluation of contact surface configuration with a scanning laser microscope","authors":"K. Niizuma, M. Hasegawa","doi":"10.1109/HOLM.1993.489683","DOIUrl":"https://doi.org/10.1109/HOLM.1993.489683","url":null,"abstract":"Arc discharge between contact electrodes brings material transfer and erosion, which sometimes cause serious contact failure. To achieve better reliability and longer life of electromechanical components, characteristics of material transfer and arc erosion of each contact material under different load conditions have to be studied. However, no effective methods for gathering numerical 3D information on contact surfaces have been available. In this paper, the theory and system of a scanning laser microscope is explained, which is confirmed to be useful equipment for this purpose. A confocal optical system and a focus scan memory of the equipment enable us to measure depth of craters and height of pips on contact surfaces in a short time without damaging specimens. By processing the measured data with an image-data processing software, 3D images of contact surfaces are displayed and volume of craters and pips is easily calculated. Relay contact surfaces operated in a capacitive load circuit are numerically evaluated with the scanning laser microscope. The 3D data such as height, depth and volume of craters and pips are measured and material transfer rate per unit arc energy is calculated. The results are shown to confirm how useful the equipment is for investigation of electrical contacts.","PeriodicalId":11624,"journal":{"name":"Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79414989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

An advanced silver/tin oxide contact material 一种高级氧化银/锡接触材料

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489655

V. Behrens, T. Honig, A. Kraus, Roland Michal, K. E. Saeger, Rainer Schmidberger, T. Staneff

引用次数: 28

The influence of bounce parameters on the make erosion of silver/metal-oxide contact materials 弹跳参数对银/金属氧化物接触材料冲蚀的影响

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489654

E. Hetzmannseder, W. Rieder

引用次数: 26

Model predictions of arc cathode erosion rate dependence on plasma gas and on cathode material 电弧阴极腐蚀速率随等离子体气体和阴极材料的模型预测

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489681

X. Zhou, J. Heberlein, E. Pfender

{"title":"Model predictions of arc cathode erosion rate dependence on plasma gas and on cathode material","authors":"X. Zhou, J. Heberlein, E. Pfender","doi":"10.1109/HOLM.1993.489681","DOIUrl":"https://doi.org/10.1109/HOLM.1993.489681","url":null,"abstract":"We have previously reported results of a theoretical study which predict that high current arc cathode erosion is predominantly dependent on the work function and the vapor pressure of the cathode material, and that the thermal design plays a secondary role. These results have been obtained with a newly developed self-consistent model of the cathode region including a realistic one-dimensional sheath model. The results have been obtained for an argon arc and a tungsten cathode. The model has now been extended and results have been obtained for different arc gases and different electrode materials. The arc gas has a strong effect because it affects not only the temperature at the boundary between the arc and the cathode region, but also the electron density in the cathode region and at the cathode. The results of the calculations show that the cathode material plays a dominant role in terms of the cathode spot temperature and the associated mass loss rate by evaporation of cathode material. Since the addition of thorium oxide to tungsten reduces the work function of the cathode material, the cathode spot temperature as well as the mass loss rate by evaporation are reduced. For the same cathode material, hydrogen leads to the highest cathode spot temperature and mass loss rate, followed by nitrogen and argon. The current density at the cathode spot, the cathode spot size, and the percentages of the energy fluxes removed from the cathode spot are mainly determined by the plasma gas rather than by the cathode material.","PeriodicalId":11624,"journal":{"name":"Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1993-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81825967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Screening contact materials for low speed slip ring assemblies 筛选低速滑环组件的接触材料

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-09-27 DOI: 10.1109/HOLM.1993.489673

E. Smith, R. Lysonski, A. Klein, J.W. Agopovich, B. Reed, R. Denton

引用次数: 7

The Holm Conference Prize Paper Award 霍尔姆会议论文奖

Electrical Contacts - 2007 Proceedings of the 53rd IEEE Holm Conference on Electrical Contacts Pub Date : 1993-01-01 DOI: 10.1109/holm.1993.489650

B. Malucci, X. Zhou, J. Heberlein, E. Pfender, R. Kothari, R. Vook, R. Timsit, M. Runde, E. Hodne, B. Tatdal

引用次数: 0