两层单晶金膜间裂纹焊接的直接透射电镜观察

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts Pub Date : 1900-01-01 DOI:10.1109/33.19010

Chan Siu-Wai

{"title":"两层单晶金膜间裂纹焊接的直接透射电镜观察","authors":"Chan Siu-Wai","doi":"10.1109/33.19010","DOIUrl":null,"url":null,"abstract":"The information of grain boundaries between two gold films in contact was directly observed on a hot stage in a transmission electron microscope at a temperature that was less than 0.4 of the gold melting point. This is believed to be the first direct evidence of metal-to-metal welding by the formation of grain boundaries at touching asperities. These welds can contribute to the frictional force of a sliding contact because grain boundaries of pure metals have the same mechanical strength as the bulk of the material. In addition, shear deformation of these joined asperities can contribute to the adhesive wear in sliding. This would be relevant to the gold alloys used in electrical sliding contacts. The experimental results are reported in detail.<<ETX>>","PeriodicalId":191800,"journal":{"name":"Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts","volume":"55 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":"{\"title\":\"Direct TEM observation of the welding of asperities between two single crystal gold films\",\"authors\":\"Chan Siu-Wai\",\"doi\":\"10.1109/33.19010\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The information of grain boundaries between two gold films in contact was directly observed on a hot stage in a transmission electron microscope at a temperature that was less than 0.4 of the gold melting point. This is believed to be the first direct evidence of metal-to-metal welding by the formation of grain boundaries at touching asperities. These welds can contribute to the frictional force of a sliding contact because grain boundaries of pure metals have the same mechanical strength as the bulk of the material. In addition, shear deformation of these joined asperities can contribute to the adhesive wear in sliding. This would be relevant to the gold alloys used in electrical sliding contacts. The experimental results are reported in detail.<<ETX>>\",\"PeriodicalId\":191800,\"journal\":{\"name\":\"Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts\",\"volume\":\"55 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1900-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/33.19010\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/33.19010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 7

摘要

在低于金熔点0.4的温度下，在透射电子显微镜的热阶上直接观察到接触的两层金膜之间的晶界信息。这被认为是金属与金属焊接的第一个直接证据，在接触凸起处形成晶界。由于纯金属的晶界与材料的主体具有相同的机械强度，因此这些焊缝可以产生滑动接触的摩擦力。此外，这些连接体的剪切变形也会导致滑动过程中的粘着磨损。这可能与用于电滑动触点的金合金有关。详细报道了实验结果

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Direct TEM observation of the welding of asperities between two single crystal gold films

The information of grain boundaries between two gold films in contact was directly observed on a hot stage in a transmission electron microscope at a temperature that was less than 0.4 of the gold melting point. This is believed to be the first direct evidence of metal-to-metal welding by the formation of grain boundaries at touching asperities. These welds can contribute to the frictional force of a sliding contact because grain boundaries of pure metals have the same mechanical strength as the bulk of the material. In addition, shear deformation of these joined asperities can contribute to the adhesive wear in sliding. This would be relevant to the gold alloys used in electrical sliding contacts. The experimental results are reported in detail.<>

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Electrical Contacts, 1988., Proceedings of the Thirty Fourth Meeting of the IEEE Holm Conference on Electrical Contacts

自引率

0.00%

发文量