Diffusion couple studies of the Ni-Bi-Sn system
Investigations of Ni-Bi-Sn system were performed in order to inquire the phase diagram and to assess some diffusion kinetic parameters. For this purpose diffusion couples consisting of solid nickel (preliminary electroplated with tin) and liquid Bi-Sn phase were annealed at 370 °C. Three composi...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, Technical Faculty, Bor
2012-01-01
|
| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200044V.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832570485584429056 |
|---|---|
| author | Vassilev G. Milcheva N. Record M.C. Mancheva R. |
| author_facet | Vassilev G. Milcheva N. Record M.C. Mancheva R. |
| author_sort | Vassilev G. |
| collection | DOAJ |
| description | Investigations of Ni-Bi-Sn system were performed in order to inquire the phase diagram and to assess some diffusion kinetic parameters. For this purpose diffusion couples consisting of solid nickel (preliminary electroplated with tin) and liquid Bi-Sn phase were annealed at 370 °C. Three compositions (0.8, 0.6 and 0.4 mole fractions Sn) of the Bi-Sn melts were chosen. Annealing times from 24 to 216 h were applied. The phase and chemical compositions of the contact zone were determined by means of electron scanning microscope. It was confirmed that the diffusion layers consist mainly of Ni3Sn4 but other intermetallic phases grow as well. For the first time metastable Ni-Sn phases as NiSn and NiSn8 (NiSn9) were observed in metallurgical alloys (i.e. not in electroplated samples). The existence of a ternary compound previously reported in the literature was confirmed. More than one ternary Ni-Bi-Sn compounds might possibly be admitted. A growth coefficient of (2.29 ± 0.02) x 10-15 m2 s-1 was obtained. It was found that the apparent activation energy for diffusion layers growth (18 ± 8 kJ mol-1) is inferior to that one assessed at growth from solid state Bi-Sn mixtures (88 ± 12 kJ mol-1). |
| format | Article |
| id | doaj-art-32e8c9f3599849039420e079d646caec |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2012-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-32e8c9f3599849039420e079d646caec2025-02-02T15:21:30ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392012-01-0148334735710.2298/JMMB120827044VDiffusion couple studies of the Ni-Bi-Sn systemVassilev G.Milcheva N.Record M.C.Mancheva R.Investigations of Ni-Bi-Sn system were performed in order to inquire the phase diagram and to assess some diffusion kinetic parameters. For this purpose diffusion couples consisting of solid nickel (preliminary electroplated with tin) and liquid Bi-Sn phase were annealed at 370 °C. Three compositions (0.8, 0.6 and 0.4 mole fractions Sn) of the Bi-Sn melts were chosen. Annealing times from 24 to 216 h were applied. The phase and chemical compositions of the contact zone were determined by means of electron scanning microscope. It was confirmed that the diffusion layers consist mainly of Ni3Sn4 but other intermetallic phases grow as well. For the first time metastable Ni-Sn phases as NiSn and NiSn8 (NiSn9) were observed in metallurgical alloys (i.e. not in electroplated samples). The existence of a ternary compound previously reported in the literature was confirmed. More than one ternary Ni-Bi-Sn compounds might possibly be admitted. A growth coefficient of (2.29 ± 0.02) x 10-15 m2 s-1 was obtained. It was found that the apparent activation energy for diffusion layers growth (18 ± 8 kJ mol-1) is inferior to that one assessed at growth from solid state Bi-Sn mixtures (88 ± 12 kJ mol-1).http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200044V.pdfmetals and alloysdiffusion couplesphase diagrams |
| spellingShingle | Vassilev G. Milcheva N. Record M.C. Mancheva R. Diffusion couple studies of the Ni-Bi-Sn system Journal of Mining and Metallurgy. Section B: Metallurgy metals and alloys diffusion couples phase diagrams |
| title | Diffusion couple studies of the Ni-Bi-Sn system |
| title_full | Diffusion couple studies of the Ni-Bi-Sn system |
| title_fullStr | Diffusion couple studies of the Ni-Bi-Sn system |
| title_full_unstemmed | Diffusion couple studies of the Ni-Bi-Sn system |
| title_short | Diffusion couple studies of the Ni-Bi-Sn system |
| title_sort | diffusion couple studies of the ni bi sn system |
| topic | metals and alloys diffusion couples phase diagrams |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2012/1450-53391200044V.pdf |
| work_keys_str_mv | AT vassilevg diffusioncouplestudiesofthenibisnsystem AT milchevan diffusioncouplestudiesofthenibisnsystem AT recordmc diffusioncouplestudiesofthenibisnsystem AT manchevar diffusioncouplestudiesofthenibisnsystem |