Metallurgical characterization of experimental Ag-based soldering alloys
Aim: To characterize microstructure, hardness and thermal properties of experimental Ag-based soldering alloys for dental applications. Materials and methods: Ag12Ga (AgGa) and Ag10Ga5Sn (AgGaSn) were fabricated by induction melting. Six samples were prepared for each alloy and microstructure, hardn...
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| Format: | Article |
| Language: | English |
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Springer
2014-10-01
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| Series: | Saudi Dental Journal |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905214000431 |
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| author | Argyro Ntasi Youssef S. Al Jabbari Nick Silikas Sara M. Al Taweel Spiros Zinelis |
| author_facet | Argyro Ntasi Youssef S. Al Jabbari Nick Silikas Sara M. Al Taweel Spiros Zinelis |
| author_sort | Argyro Ntasi |
| collection | DOAJ |
| description | Aim: To characterize microstructure, hardness and thermal properties of experimental Ag-based soldering alloys for dental applications. Materials and methods: Ag12Ga (AgGa) and Ag10Ga5Sn (AgGaSn) were fabricated by induction melting. Six samples were prepared for each alloy and microstructure, hardness and their melting range were determined by, scanning electron microscopy, energy dispersive X-ray (EDX) microanalysis, X-ray diffraction (XRD), Vickers hardness testing and differential scanning calorimetry (DSC). Results: Both alloys demonstrated a gross dendritic microstructure while according to XRD results both materials consisted predominately of a Ag-rich face centered cubic phase The hardness of AgGa (61 ± 2) was statistically lower than that of AgGaSn (84 ± 2) while the alloys tested showed similar melting range of 627–762 °C for AgGa and 631–756 °C for AgGaSn. Conclusion: The experimental alloys tested demonstrated similar microstructures and melting ranges. Ga and Sn might be used as alternative to Cu and Zn to modify the selected properties of Ag based soldering alloys. Keywords: Soldering, Ag-based alloys, Microstructure, DSC, SEM, EDX, XRD |
| format | Article |
| id | doaj-art-8e2bf130292b4d7ca64e582674fa2a7b |
| institution | DOAJ |
| issn | 1013-9052 |
| language | English |
| publishDate | 2014-10-01 |
| publisher | Springer |
| record_format | Article |
| series | Saudi Dental Journal |
| spelling | doaj-art-8e2bf130292b4d7ca64e582674fa2a7b2025-08-20T03:06:51ZengSpringerSaudi Dental Journal1013-90522014-10-0126413914410.1016/j.sdentj.2014.05.001Metallurgical characterization of experimental Ag-based soldering alloysArgyro Ntasi0Youssef S. Al Jabbari1Nick Silikas2Sara M. Al Taweel3Spiros Zinelis4Department of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, GreeceDental Biomaterials Research and Development Chair, Saudi Arabia; Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi Arabia; Corresponding author. Address: Dental Biomaterials Research and Development Research Chair, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia. Tel.: +966 1 4698312; fax: +966 1 4698313.Biomaterials Unit, School of Dentistry, University of Manchester, Manchester, UKDental Biomaterials Research and Development Chair, Saudi Arabia; Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Saudi ArabiaDepartment of Biomaterials, School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece; Dental Biomaterials Research and Development Chair, Saudi ArabiaAim: To characterize microstructure, hardness and thermal properties of experimental Ag-based soldering alloys for dental applications. Materials and methods: Ag12Ga (AgGa) and Ag10Ga5Sn (AgGaSn) were fabricated by induction melting. Six samples were prepared for each alloy and microstructure, hardness and their melting range were determined by, scanning electron microscopy, energy dispersive X-ray (EDX) microanalysis, X-ray diffraction (XRD), Vickers hardness testing and differential scanning calorimetry (DSC). Results: Both alloys demonstrated a gross dendritic microstructure while according to XRD results both materials consisted predominately of a Ag-rich face centered cubic phase The hardness of AgGa (61 ± 2) was statistically lower than that of AgGaSn (84 ± 2) while the alloys tested showed similar melting range of 627–762 °C for AgGa and 631–756 °C for AgGaSn. Conclusion: The experimental alloys tested demonstrated similar microstructures and melting ranges. Ga and Sn might be used as alternative to Cu and Zn to modify the selected properties of Ag based soldering alloys. Keywords: Soldering, Ag-based alloys, Microstructure, DSC, SEM, EDX, XRDhttp://www.sciencedirect.com/science/article/pii/S1013905214000431 |
| spellingShingle | Argyro Ntasi Youssef S. Al Jabbari Nick Silikas Sara M. Al Taweel Spiros Zinelis Metallurgical characterization of experimental Ag-based soldering alloys Saudi Dental Journal |
| title | Metallurgical characterization of experimental Ag-based soldering alloys |
| title_full | Metallurgical characterization of experimental Ag-based soldering alloys |
| title_fullStr | Metallurgical characterization of experimental Ag-based soldering alloys |
| title_full_unstemmed | Metallurgical characterization of experimental Ag-based soldering alloys |
| title_short | Metallurgical characterization of experimental Ag-based soldering alloys |
| title_sort | metallurgical characterization of experimental ag based soldering alloys |
| url | http://www.sciencedirect.com/science/article/pii/S1013905214000431 |
| work_keys_str_mv | AT argyrontasi metallurgicalcharacterizationofexperimentalagbasedsolderingalloys AT youssefsaljabbari metallurgicalcharacterizationofexperimentalagbasedsolderingalloys AT nicksilikas metallurgicalcharacterizationofexperimentalagbasedsolderingalloys AT saramaltaweel metallurgicalcharacterizationofexperimentalagbasedsolderingalloys AT spiroszinelis metallurgicalcharacterizationofexperimentalagbasedsolderingalloys |