Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux
CsF-AlF<sub>3</sub> based composite fluxes with different Ge contents which are in the form of GeO<sub>2</sub> were developed by the method of solution synthesis, and their melting characteristics, phase structures and microstructures were observed and analyzed subsequently....
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| Format: | Article |
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Journal of Materials Engineering
2018-04-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jam.biam.ac.cn/CN/Y2018/V46/I4/99 |
| _version_ | 1797964817100701696 |
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| author | HE Pei-long CHENG Fang-jie XIAO Bing ZHAO Huan |
| author_facet | HE Pei-long CHENG Fang-jie XIAO Bing ZHAO Huan |
| author_sort | HE Pei-long |
| collection | DOAJ |
| description | CsF-AlF<sub>3</sub> based composite fluxes with different Ge contents which are in the form of GeO<sub>2</sub> were developed by the method of solution synthesis, and their melting characteristics, phase structures and microstructures were observed and analyzed subsequently. Meanwhile, 2024 aluminum alloy was brazed successfully at 480℃ under the active effect of CsF-AlF<sub>3</sub> flux with 4% (mass fraction, the same below) Ge doped. The results show that the liquidus temperature decreases from 477℃ to around 440℃and has the main phase composition of CsAlF<sub>4</sub> and Cs<sub>2</sub>GeF<sub>6</sub> when content of Ge exceeds 4%. And the new Cs<sub>2</sub>GeF<sub>6</sub> changes the morphology of CsF-AlF<sub>3</sub> flux to more regular polyhedron structure with fewer flocculent agglomerates. On the other hand, the flux with 4% Ge immensely promotes the spreading of Zn-15Al filler metal on the 2024 aluminum alloy at 480℃ and the shear strength of brazing lapping joints reaches 110MPa,with homogeneous structure of the joints,and with no obvious defects observed. |
| first_indexed | 2024-04-11T01:50:51Z |
| format | Article |
| id | doaj.art-53dfeee592444ccfad3e476393823360 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T01:50:51Z |
| publishDate | 2018-04-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-53dfeee592444ccfad3e4763938233602023-01-03T06:26:52ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812018-04-014649910310.11868/j.issn.1001-4381.2016.000911201804000911Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> FluxHE Pei-long0CHENG Fang-jie1XIAO Bing2ZHAO Huan3School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China;CsF-AlF<sub>3</sub> based composite fluxes with different Ge contents which are in the form of GeO<sub>2</sub> were developed by the method of solution synthesis, and their melting characteristics, phase structures and microstructures were observed and analyzed subsequently. Meanwhile, 2024 aluminum alloy was brazed successfully at 480℃ under the active effect of CsF-AlF<sub>3</sub> flux with 4% (mass fraction, the same below) Ge doped. The results show that the liquidus temperature decreases from 477℃ to around 440℃and has the main phase composition of CsAlF<sub>4</sub> and Cs<sub>2</sub>GeF<sub>6</sub> when content of Ge exceeds 4%. And the new Cs<sub>2</sub>GeF<sub>6</sub> changes the morphology of CsF-AlF<sub>3</sub> flux to more regular polyhedron structure with fewer flocculent agglomerates. On the other hand, the flux with 4% Ge immensely promotes the spreading of Zn-15Al filler metal on the 2024 aluminum alloy at 480℃ and the shear strength of brazing lapping joints reaches 110MPa,with homogeneous structure of the joints,and with no obvious defects observed.http://jam.biam.ac.cn/CN/Y2018/V46/I4/99middle-temperature aluminium brazing fluxlow melting point2024 aluminium alloybrazing |
| spellingShingle | HE Pei-long CHENG Fang-jie XIAO Bing ZHAO Huan Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux Cailiao gongcheng middle-temperature aluminium brazing flux low melting point 2024 aluminium alloy brazing |
| title | Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux |
| title_full | Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux |
| title_fullStr | Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux |
| title_full_unstemmed | Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux |
| title_short | Effect of Ge-doping on the Melting Property, Phase Structures and Spreadability of CsF-AlF<sub>3</sub> Flux |
| title_sort | effect of ge doping on the melting property phase structures and spreadability of csf alf sub 3 sub flux |
| topic | middle-temperature aluminium brazing flux low melting point 2024 aluminium alloy brazing |
| url | http://jam.biam.ac.cn/CN/Y2018/V46/I4/99 |
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