{"title":"银铜共晶合金Ag72Cu28垂直接头RFQ截面钎焊阶段的钎焊特性","authors":"Kyung Hyun Kim, Jung Goo Hong","doi":"10.1007/s40042-025-01333-6","DOIUrl":null,"url":null,"abstract":"<div><p>A radio-frequency quadrupole (RFQ) is a critical component in particle accelerator technology, and section brazing is a crucial fabrication process in this context. This study investigates the brazing characteristics of vertical joints created using Ag72Cu28 metal filler in a high-vacuum environment. Experimental specimens were prepared with copper plates and brazed at temperatures ranging from 778 to 805° C to analyze the melting behavior of the filler. X-ray computerized tomography (CT) scans revealed that the filler begins to melt at 782° C and that complete melting occurs at 784° C. It was found that maintaining temperatures of above 780° C for at least 17 min ensures optimal bonding, while temperatures below this can result in incomplete melting and potential vacuum leaks. Conversely, excessively high temperatures can cause filler overflow and require additional machining. This study provides critical insights regarding the precise temperature control required for successful RFQ section brazing, addressing the challenges of vacuum leaks and incomplete filler melting. These findings offer practical guidelines related to the minimum brazing temperature and brazing time for improving RFQ manufacturing reliability, particularly for vertical joint configurations.</p></div>","PeriodicalId":677,"journal":{"name":"Journal of the Korean Physical Society","volume":"87 on","pages":"892 - 901"},"PeriodicalIF":0.9000,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Brazing characteristics of vertical joints with silver copper eutectic alloy Ag72Cu28 for RFQ section brazing stage\",\"authors\":\"Kyung Hyun Kim, Jung Goo Hong\",\"doi\":\"10.1007/s40042-025-01333-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>A radio-frequency quadrupole (RFQ) is a critical component in particle accelerator technology, and section brazing is a crucial fabrication process in this context. This study investigates the brazing characteristics of vertical joints created using Ag72Cu28 metal filler in a high-vacuum environment. Experimental specimens were prepared with copper plates and brazed at temperatures ranging from 778 to 805° C to analyze the melting behavior of the filler. X-ray computerized tomography (CT) scans revealed that the filler begins to melt at 782° C and that complete melting occurs at 784° C. It was found that maintaining temperatures of above 780° C for at least 17 min ensures optimal bonding, while temperatures below this can result in incomplete melting and potential vacuum leaks. Conversely, excessively high temperatures can cause filler overflow and require additional machining. This study provides critical insights regarding the precise temperature control required for successful RFQ section brazing, addressing the challenges of vacuum leaks and incomplete filler melting. These findings offer practical guidelines related to the minimum brazing temperature and brazing time for improving RFQ manufacturing reliability, particularly for vertical joint configurations.</p></div>\",\"PeriodicalId\":677,\"journal\":{\"name\":\"Journal of the Korean Physical Society\",\"volume\":\"87 on\",\"pages\":\"892 - 901\"},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2025-03-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Korean Physical Society\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s40042-025-01333-6\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean Physical Society","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s40042-025-01333-6","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Brazing characteristics of vertical joints with silver copper eutectic alloy Ag72Cu28 for RFQ section brazing stage
A radio-frequency quadrupole (RFQ) is a critical component in particle accelerator technology, and section brazing is a crucial fabrication process in this context. This study investigates the brazing characteristics of vertical joints created using Ag72Cu28 metal filler in a high-vacuum environment. Experimental specimens were prepared with copper plates and brazed at temperatures ranging from 778 to 805° C to analyze the melting behavior of the filler. X-ray computerized tomography (CT) scans revealed that the filler begins to melt at 782° C and that complete melting occurs at 784° C. It was found that maintaining temperatures of above 780° C for at least 17 min ensures optimal bonding, while temperatures below this can result in incomplete melting and potential vacuum leaks. Conversely, excessively high temperatures can cause filler overflow and require additional machining. This study provides critical insights regarding the precise temperature control required for successful RFQ section brazing, addressing the challenges of vacuum leaks and incomplete filler melting. These findings offer practical guidelines related to the minimum brazing temperature and brazing time for improving RFQ manufacturing reliability, particularly for vertical joint configurations.
期刊介绍:
The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.