{"title":"Ag-Cu共晶钎料对Ti6Al4V/Al2O3真空钎焊接头的腐蚀行为","authors":"A. C. Alves, E. Ariza, A. Guedes","doi":"10.1007/s11665-025-10734-4","DOIUrl":null,"url":null,"abstract":"<div><p>Ti6Al4V/Al<sub>2</sub>O<sub>3</sub> vacuum brazed joints were successfully processed at 830 °C using Ag-Cu eutectic foil as filler alloy. Scanning electron microscopy and energy dispersive spectroscopy were used to characterize the brazed joints microstructure and chemical composition. Studies focusing the electrochemical behavior of the base Ti6Al4V alloy and of the brazed joints were performed in 3.5 wt.% of NaCl using open circuit potential, potentiodynamic polarization tests and electrochemical impedance spectroscopy. Polarization resistance tests were also performed through different immersion periods, up to eight days. Brazing produced a multilayered interface mainly composed of Cu-Ti intermetallics and (Ag). Bonding between the metal and ceramic parts of the joint was ensured by a Ti-Cu-Al-O layer formed adjacently to Al<sub>2</sub>O<sub>3</sub> sample. The corrosion behavior of the brazed joint was dictated by the preferential dissolution of the CuTi<sub>2</sub>, Cu<sub>4</sub>Ti, Cu<sub>4</sub>Ti<sub>3</sub>, Cu<sub>2</sub>TiAl and (Cu) formed at the interface and was found to be inferior to that of Ti6Al4V.</p></div>","PeriodicalId":644,"journal":{"name":"Journal of Materials Engineering and Performance","volume":"34 18","pages":"20376 - 20385"},"PeriodicalIF":2.0000,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Corrosion Behavior of Ti6Al4V/Al2O3 Vacuum Brazed Joints with Ag-Cu Eutectic Filler\",\"authors\":\"A. C. Alves, E. Ariza, A. Guedes\",\"doi\":\"10.1007/s11665-025-10734-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Ti6Al4V/Al<sub>2</sub>O<sub>3</sub> vacuum brazed joints were successfully processed at 830 °C using Ag-Cu eutectic foil as filler alloy. Scanning electron microscopy and energy dispersive spectroscopy were used to characterize the brazed joints microstructure and chemical composition. Studies focusing the electrochemical behavior of the base Ti6Al4V alloy and of the brazed joints were performed in 3.5 wt.% of NaCl using open circuit potential, potentiodynamic polarization tests and electrochemical impedance spectroscopy. Polarization resistance tests were also performed through different immersion periods, up to eight days. Brazing produced a multilayered interface mainly composed of Cu-Ti intermetallics and (Ag). Bonding between the metal and ceramic parts of the joint was ensured by a Ti-Cu-Al-O layer formed adjacently to Al<sub>2</sub>O<sub>3</sub> sample. The corrosion behavior of the brazed joint was dictated by the preferential dissolution of the CuTi<sub>2</sub>, Cu<sub>4</sub>Ti, Cu<sub>4</sub>Ti<sub>3</sub>, Cu<sub>2</sub>TiAl and (Cu) formed at the interface and was found to be inferior to that of Ti6Al4V.</p></div>\",\"PeriodicalId\":644,\"journal\":{\"name\":\"Journal of Materials Engineering and Performance\",\"volume\":\"34 18\",\"pages\":\"20376 - 20385\"},\"PeriodicalIF\":2.0000,\"publicationDate\":\"2025-02-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Engineering and Performance\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11665-025-10734-4\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Engineering and Performance","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11665-025-10734-4","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Corrosion Behavior of Ti6Al4V/Al2O3 Vacuum Brazed Joints with Ag-Cu Eutectic Filler
Ti6Al4V/Al2O3 vacuum brazed joints were successfully processed at 830 °C using Ag-Cu eutectic foil as filler alloy. Scanning electron microscopy and energy dispersive spectroscopy were used to characterize the brazed joints microstructure and chemical composition. Studies focusing the electrochemical behavior of the base Ti6Al4V alloy and of the brazed joints were performed in 3.5 wt.% of NaCl using open circuit potential, potentiodynamic polarization tests and electrochemical impedance spectroscopy. Polarization resistance tests were also performed through different immersion periods, up to eight days. Brazing produced a multilayered interface mainly composed of Cu-Ti intermetallics and (Ag). Bonding between the metal and ceramic parts of the joint was ensured by a Ti-Cu-Al-O layer formed adjacently to Al2O3 sample. The corrosion behavior of the brazed joint was dictated by the preferential dissolution of the CuTi2, Cu4Ti, Cu4Ti3, Cu2TiAl and (Cu) formed at the interface and was found to be inferior to that of Ti6Al4V.
期刊介绍：
ASM International''s Journal of Materials Engineering and Performance focuses on solving day-to-day engineering challenges, particularly those involving components for larger systems. The journal presents a clear understanding of relationships between materials selection, processing, applications and performance.
The Journal of Materials Engineering covers all aspects of materials selection, design, processing, characterization and evaluation, including how to improve materials properties through processes and process control of casting, forming, heat treating, surface modification and coating, and fabrication.
Testing and characterization (including mechanical and physical tests, NDE, metallography, failure analysis, corrosion resistance, chemical analysis, surface characterization, and microanalysis of surfaces, features and fractures), and industrial performance measurement are also covered
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