Electrochemical synthesis and characterization of BaB6 from molten melt
Barium hexaboride (BaB6) crystals were electrochemically synthesized using molten salt technique. Barium carbonate (BaCO3) and boron trioxide (B2O3) was used as reactants. Lithium fluoride (LiF) was used as the supporting electrolyte. The molten electrolyte consisted of 50 wt % BaCO3 and B2O3 with d...
| 主要な著者: | , , , , |
|---|---|
| フォーマット: | 論文 |
| 言語: | English |
| 出版事項: |
University of Belgrade, Technical Faculty, Bor
2009-01-01
|
| シリーズ: | Journal of Mining and Metallurgy. Section B: Metallurgy |
| 主題: | |
| オンライン･アクセス: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901101J.pdf |
| _version_ | 1826840740362190848 |
|---|---|
| author | Jose T.P. Sundar L. Berchmans L.J. Visuvasam A. Angappan S. |
| author_facet | Jose T.P. Sundar L. Berchmans L.J. Visuvasam A. Angappan S. |
| author_sort | Jose T.P. |
| collection | DOAJ |
| description | Barium hexaboride (BaB6) crystals were electrochemically synthesized using molten salt technique. Barium carbonate (BaCO3) and boron trioxide (B2O3) was used as reactants. Lithium fluoride (LiF) was used as the supporting electrolyte. The molten electrolyte consisted of 50 wt % BaCO3 and B2O3 with different stiochiometric ratios of Ba and B and 50 wt % lithium fluoride. DTA/TGA studies were made to determine the eutectic point of the melt and it was found to be around 821oC. The electrolytic cell had a high purity graphite crucible, which served as the electrolyte holding vessel and also as the anode for the electrolysis. An electro-polished molybdenum rod was employed as the cathode. The electrolysis was performed at 870ºC under argon atmosphere, at current densities ranging from 0.2-0.5 A/cm2. The electrodeposited crystals were examined for the phase identification using X-ray diffraction technique. The AAS and the chemical analysis were made for the determination of chemical composition of the synthesized crystals. The purity of the crystals was also assessed using ICP-MS, XRF and EDX, which reveal that the crystals were associated with trace amount of impurities like oxygen, carbon and iron. The compound is found to be more than 99 % pure. The morphology of the crystals was examined using Scanning Electron Microscopy (SEM). From the above studies, it is concluded that the molten salt process is a simple preparative procedure for the synthesis of sub-micron size barium hexaboride crystals. |
| first_indexed | 2024-12-12T10:13:44Z |
| format | Article |
| id | doaj.art-68348a4161df43b38b6b0d5519df0d78 |
| institution | Directory Open Access Journal |
| issn | 1450-5339 |
| language | English |
| last_indexed | 2025-02-16T12:47:15Z |
| publishDate | 2009-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj.art-68348a4161df43b38b6b0d5519df0d782025-02-02T21:23:11ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392009-01-0145110110910.2298/JMMB0901101JElectrochemical synthesis and characterization of BaB6 from molten meltJose T.P.Sundar L.Berchmans L.J.Visuvasam A.Angappan S.Barium hexaboride (BaB6) crystals were electrochemically synthesized using molten salt technique. Barium carbonate (BaCO3) and boron trioxide (B2O3) was used as reactants. Lithium fluoride (LiF) was used as the supporting electrolyte. The molten electrolyte consisted of 50 wt % BaCO3 and B2O3 with different stiochiometric ratios of Ba and B and 50 wt % lithium fluoride. DTA/TGA studies were made to determine the eutectic point of the melt and it was found to be around 821oC. The electrolytic cell had a high purity graphite crucible, which served as the electrolyte holding vessel and also as the anode for the electrolysis. An electro-polished molybdenum rod was employed as the cathode. The electrolysis was performed at 870ºC under argon atmosphere, at current densities ranging from 0.2-0.5 A/cm2. The electrodeposited crystals were examined for the phase identification using X-ray diffraction technique. The AAS and the chemical analysis were made for the determination of chemical composition of the synthesized crystals. The purity of the crystals was also assessed using ICP-MS, XRF and EDX, which reveal that the crystals were associated with trace amount of impurities like oxygen, carbon and iron. The compound is found to be more than 99 % pure. The morphology of the crystals was examined using Scanning Electron Microscopy (SEM). From the above studies, it is concluded that the molten salt process is a simple preparative procedure for the synthesis of sub-micron size barium hexaboride crystals.http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901101J.pdfbarium hexaborideelectrochemical synthesisDTA/TGAXRDAASSEM |
| spellingShingle | Jose T.P. Sundar L. Berchmans L.J. Visuvasam A. Angappan S. Electrochemical synthesis and characterization of BaB6 from molten melt Journal of Mining and Metallurgy. Section B: Metallurgy barium hexaboride electrochemical synthesis DTA/TGA XRD AAS SEM |
| title | Electrochemical synthesis and characterization of BaB6 from molten melt |
| title_full | Electrochemical synthesis and characterization of BaB6 from molten melt |
| title_fullStr | Electrochemical synthesis and characterization of BaB6 from molten melt |
| title_full_unstemmed | Electrochemical synthesis and characterization of BaB6 from molten melt |
| title_short | Electrochemical synthesis and characterization of BaB6 from molten melt |
| title_sort | electrochemical synthesis and characterization of bab6 from molten melt |
| topic | barium hexaboride electrochemical synthesis DTA/TGA XRD AAS SEM |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2009/1450-53390901101J.pdf |
| work_keys_str_mv | AT josetp electrochemicalsynthesisandcharacterizationofbab6frommoltenmelt AT sundarl electrochemicalsynthesisandcharacterizationofbab6frommoltenmelt AT berchmanslj electrochemicalsynthesisandcharacterizationofbab6frommoltenmelt AT visuvasama electrochemicalsynthesisandcharacterizationofbab6frommoltenmelt AT angappans electrochemicalsynthesisandcharacterizationofbab6frommoltenmelt |