Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior
We firstly performed the reactive air wetting and brazing of Al2O3 ceramics using Ag–(0.5‒12)Nb2O5 fillers, where Nb2O5 can react with liquid Ag and O2 from air to generate AgNbO3. The contact angle of the Ag–Nb2O5/Al2O3 system almost linearly decreases from ~71.6° to 32.5° with the Nb2O5 content in...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Tsinghua University Press
2024-02-01
|
| Series: | Journal of Advanced Ceramics |
| Subjects: | |
| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2024.9220857 |
| _version_ | 1827313333032714240 |
|---|---|
| author | Yudi Qiu Shunjian Xu Xiangzhao Zhang Mingfen Zhang Qinhan Guo Beiji Wang Guanjun Qiao Guiwu Liu |
| author_facet | Yudi Qiu Shunjian Xu Xiangzhao Zhang Mingfen Zhang Qinhan Guo Beiji Wang Guanjun Qiao Guiwu Liu |
| author_sort | Yudi Qiu |
| collection | DOAJ |
| description | We firstly performed the reactive air wetting and brazing of Al2O3 ceramics using Ag–(0.5‒12)Nb2O5 fillers, where Nb2O5 can react with liquid Ag and O2 from air to generate AgNbO3. The contact angle of the Ag–Nb2O5/Al2O3 system almost linearly decreases from ~71.6° to 32.5° with the Nb2O5 content increasing, and the joint shear strength reaches the maximum of ~65.1 MPa while employing the Ag–4Nb2O5 filler, which are mainly related to the formation and distribution of the AgNbO3 phase at the interface. Moreover, the interfacial bonding and electronic properties of related interfaces were investigated by first-principles calculations. The calculated works of adhesion (Wa) of Ag(111)/Ag–O–AgNbO3(001) and AgNbO3(001)/Al2O3(100) interfaces are higher than that of the Ag(111)/Al2O3(110) interface, indicating good reliability of the Ag/AgNbO3/Al2O3 structure. The relatively large interfacial charge transfer indicates the formation of Ag–Ag, Al–O, and Ag–O bonds in the Ag/AgNbO3/Al2O3 structure, which can contribute to the interfacial bonding. |
| first_indexed | 2024-04-24T22:06:43Z |
| format | Article |
| id | doaj.art-4651889d99654ecc995951b4f687a657 |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-04-24T22:06:43Z |
| publishDate | 2024-02-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-4651889d99654ecc995951b4f687a6572024-03-20T11:12:30ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082024-02-0113213514210.26599/JAC.2024.9220857Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behaviorYudi Qiu0Shunjian Xu1Xiangzhao Zhang2Mingfen Zhang3Qinhan Guo4Beiji Wang5Guanjun Qiao6Guiwu Liu7School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Intelligent Manufacturing, Huzhou College, Huzhou 313000, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, ChinaWe firstly performed the reactive air wetting and brazing of Al2O3 ceramics using Ag–(0.5‒12)Nb2O5 fillers, where Nb2O5 can react with liquid Ag and O2 from air to generate AgNbO3. The contact angle of the Ag–Nb2O5/Al2O3 system almost linearly decreases from ~71.6° to 32.5° with the Nb2O5 content increasing, and the joint shear strength reaches the maximum of ~65.1 MPa while employing the Ag–4Nb2O5 filler, which are mainly related to the formation and distribution of the AgNbO3 phase at the interface. Moreover, the interfacial bonding and electronic properties of related interfaces were investigated by first-principles calculations. The calculated works of adhesion (Wa) of Ag(111)/Ag–O–AgNbO3(001) and AgNbO3(001)/Al2O3(100) interfaces are higher than that of the Ag(111)/Al2O3(110) interface, indicating good reliability of the Ag/AgNbO3/Al2O3 structure. The relatively large interfacial charge transfer indicates the formation of Ag–Ag, Al–O, and Ag–O bonds in the Ag/AgNbO3/Al2O3 structure, which can contribute to the interfacial bonding.https://www.sciopen.com/article/10.26599/JAC.2024.9220857reactive air brazing (rab)wettabilitymicrostructureshear strengthfirst-principles calculations |
| spellingShingle | Yudi Qiu Shunjian Xu Xiangzhao Zhang Mingfen Zhang Qinhan Guo Beiji Wang Guanjun Qiao Guiwu Liu Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior Journal of Advanced Ceramics reactive air brazing (rab) wettability microstructure shear strength first-principles calculations |
| title | Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior |
| title_full | Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior |
| title_fullStr | Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior |
| title_full_unstemmed | Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior |
| title_short | Reactive air wetting and brazing of Al2O3 ceramics using Ag–Nb2O5 filler: Performance and interfacial behavior |
| title_sort | reactive air wetting and brazing of al2o3 ceramics using ag nb2o5 filler performance and interfacial behavior |
| topic | reactive air brazing (rab) wettability microstructure shear strength first-principles calculations |
| url | https://www.sciopen.com/article/10.26599/JAC.2024.9220857 |
| work_keys_str_mv | AT yudiqiu reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT shunjianxu reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT xiangzhaozhang reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT mingfenzhang reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT qinhanguo reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT beijiwang reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT guanjunqiao reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior AT guiwuliu reactiveairwettingandbrazingofal2o3ceramicsusingagnb2o5fillerperformanceandinterfacialbehavior |