Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)最新文献

A new design of multi-contact reed relay for improving switching load capacity 为提高开关负载能力，设计了一种新的多触点簧片继电器

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722448

Liang-jun Xu, Ji-gao Zhang, B. Miedzinski

引用次数: 1

Magnetic flux density as a probe of the state of electrical contacts 磁通密度作为电触点状态的探测

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722427

A. Nordstrom, R. Gustafsson

引用次数: 2

STM study of topographical changes on gold contact surfaces caused by loading STM研究加载引起的金接触面形貌变化

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722435

W. E. Pendleton, A. Tackett, L. Korzeniowski, G. Cvijanovich, R.T. Williams, W. C. Jones

{"title":"STM study of topographical changes on gold contact surfaces caused by loading","authors":"W. E. Pendleton, A. Tackett, L. Korzeniowski, G. Cvijanovich, R.T. Williams, W. C. Jones","doi":"10.1109/HOLM.1998.722435","DOIUrl":"https://doi.org/10.1109/HOLM.1998.722435","url":null,"abstract":"The topographical changes to the asperities of a flat cobalt-hardened gold electroplated surface that occur as a result of being contacted with a ruby sphere are studied by means of scanning tunneling microscopy and software developed to allow computer image registration and subtraction. A range of normal, force loads and sphere sizes are utilized. Quantitative information is obtained for each plastically deformed asperity in the contact region concerning the volume of material displaced during the contact process and the area of the contact spot resulting from the flattened asperity. Three-dimensional images are presented that show the location and size of the portions the asperities that were displaced in the contact process. Two-dimensional maps are generated to show the location and size of the asperity contacting spots in the contact region, Data from contact conditions of 10 to 100 grams normal force and from 1/16 inch to 1/4 inch contacting sphere diameter are used to show trends concerning the number of deformed asperities, total contacting area, total deformed volume, maximum area of the largest deformed asperity, force/total contacting area, and total deformed volume/total contacting area as a function of normal force and sphere diameter.","PeriodicalId":371014,"journal":{"name":"Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123440635","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

Erosion and resistance characteristics of AgW and AgC contacts at high current arcing in air 空气大电流电弧作用下AgW和AgC触点的冲蚀和电阻特性

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722457

J. Shea

引用次数: 24

Optimization of silver tin oxide chemistry to enhance electrical performance in a.c. application 优化氧化银锡的化学性质以提高交流应用中的电性能

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722445

H.A. Francisco, M. Myers

{"title":"Optimization of silver tin oxide chemistry to enhance electrical performance in a.c. application","authors":"H.A. Francisco, M. Myers","doi":"10.1109/HOLM.1998.722445","DOIUrl":"https://doi.org/10.1109/HOLM.1998.722445","url":null,"abstract":"The addition of copper oxide (0.37-0.53%) to silver tin oxide based material substantially improved the electrical performance in a.c. application. The erosion behavior of the material was directly related to the level of copper oxide in the silver tin oxide based materials. The investigation was undertaken to correlate the changes in contact performance as the copper oxide additive varied. Performance changes and physical characteristics of each material, such as formability (tensile properties), contact resistance and contact material erosion (arc erosion) were evaluated. The resistance to arc erosion of silver tin oxide based material containing 0.37-0.53% copper oxide by weight was superior in comparison to other silver tin oxide based materials containing 0.025%, 0.065% and 0.96% of copper oxide. In addition changes in electrical resistance were not dependent on the chemistry of each material. The results suggested copper oxide addition of 0.37-0.53% by weight was the chief reason silver tin oxide based materials out-performed other doped silver tin oxide based material under the same test conditions.","PeriodicalId":371014,"journal":{"name":"Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121600367","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: 3

Influence of AC interruption points on AC arc erosion of silver based contact materials 交流中断点对银基触点材料交流电弧侵蚀的影响

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722447

Hassan NOURI, T. Davies, J. Head

引用次数: 4

Electrode processes and arc form in miniature circuit breakers 微型断路器的电极工艺和电弧形式

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722433

J. McBride, P. Jeffery, P. Weaver

引用次数: 5

Electric contact behavior of Cu-Sn intermetallic compound formed in tin platings 镀锡中Cu-Sn金属间化合物的电接触行为

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722424

C.B. Shao, J.G. Zhang

引用次数: 12

Performance of the gold-tin connector interface in a flight environment 金-锡连接器接口在飞行环境中的性能

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722439

W. Abbott

{"title":"Performance of the gold-tin connector interface in a flight environment","authors":"W. Abbott","doi":"10.1109/HOLM.1998.722439","DOIUrl":"https://doi.org/10.1109/HOLM.1998.722439","url":null,"abstract":"Field and laboratory studies were conducted over a 2-year period to confirm a suspected failure mechanism in a flight critical electrical connector. The connector involved the combination of gold-plated sockets mated to solder-plated pins in a 6 pin, circular military connector. The suspected failure mechanism was fretting corrosion. A second objective was to evaluate the effects of a MIL-L-87177A lubricant on this combination. This lubricant was being considered as a potential field \"fix\" on systems already deployed (and potentially in a degraded state) in the field. Flight tests confirmed the rapid degradation of an unlubricated population of samples. This occurred in all environments studied including two that were considered noncorrosive. The mechanism was confirmed to be fretting corrosion. Parallel flight tests on lubricated hardware demonstrated the ability of a lubricant to delay the onset of fretting corrosion for at least 1 but less than 2 years. Laboratory tests confirmed that vibration was the major stress, which was responsible for the degradation of this system. Lubrication effectiveness was confirmed to delay but not totally prevent fretting corrosion. Finally, it was demonstrated that lubrication was effective in restoring a degraded system.","PeriodicalId":371014,"journal":{"name":"Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)","volume":"172 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124186254","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: 2

Computer simulation of topographical changes on gold contact surfaces caused by loading 载荷作用下金接触面形貌变化的计算机模拟

Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238) Pub Date : 1998-10-26 DOI: 10.1109/HOLM.1998.722436

W. E. Pendleton, A. Tackett, L. Korzeniowski, G. Cvijanovich, R.T. Williams, W. C. Jones

{"title":"Computer simulation of topographical changes on gold contact surfaces caused by loading","authors":"W. E. Pendleton, A. Tackett, L. Korzeniowski, G. Cvijanovich, R.T. Williams, W. C. Jones","doi":"10.1109/HOLM.1998.722436","DOIUrl":"https://doi.org/10.1109/HOLM.1998.722436","url":null,"abstract":"The topographical changes in the asperities of a flat cobalt-hardened gold electroplated surface that occur as a result of being contacted by a sphere are simulated by computer superposition of a mathematically generated spherical surface and a Scanning Tunneling Microscope topograph of an actual flat sample surface. Both ideally smooth and rough spherical surfaces are considered. Two-dimensional maps of the location and size of contact areas and quantitative information on contact areas resulting from asperities that would have been deformed in actual contact events are presented. In addition, 3-dimensional plots and quantitative values of the location and volume of asperity material that would have been deformed in actual contact events are presented. Good agreement is found when the simulation results are compared with experimentally obtained contact results for the same sample surface region at the same indention depth. The simulation technique should prove useful in predicting changes in contact performance associated with changes in contact surface topography or contactor geometry. Computer simulation is much faster and easier than obtaining similar information by experimental techniques which are time consuming and require sophisticated sample contact and positioning hardware.","PeriodicalId":371014,"journal":{"name":"Electrical Contacts - 1998. Proceedings of the Forty-Fourth IEEE Holm Conference on Electrical Contacts (Cat. No.98CB36238)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1998-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127746377","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: 1