Contactless Ultrasound Generation in a Crucible
Ultrasound treatment is used in light alloys during solidification to refine microstructure, remove gas, or disperse immersed particles. A mechanical sonotrode immersed in the melt is most effective when probe tip vibrations lead to cavitation. Liquid contact with the probe can be problematic for hi...
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| Veröffentlicht in: | Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2015-07, Vol.46 (7), p.2884-2892 |
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| container_title | Metallurgical and materials transactions. A, Physical metallurgy and materials science |
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| creator | Bojarevics, Valdis Djambazov, Georgi S. Pericleous, Koulis A. |
| description | Ultrasound treatment is used in light alloys during solidification to refine microstructure, remove gas, or disperse immersed particles. A mechanical sonotrode immersed in the melt is most effective when probe tip vibrations lead to cavitation. Liquid contact with the probe can be problematic for high temperature or reactive melts leading to contamination. An alternative contactless method of generating ultrasonic waves is proposed, using electromagnetic (EM) induction. As a bonus, the EM force induces vigorous stirring distributing the effect to treat larger volumes of material. In a typical application, the induction coil surrounding the crucible—also used to melt the alloy—may be adopted for this purpose with suitable tuning. Alternatively, a top coil, immersed in the melt (but still contactless due to EM force repulsion) may be used. Numerical simulations of sound, flow, and EM fields suggest that large pressure amplitudes leading to cavitation may be achievable with this method. |
| doi_str_mv | 10.1007/s11661-015-2824-5 |
| format | Article |
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A mechanical sonotrode immersed in the melt is most effective when probe tip vibrations lead to cavitation. Liquid contact with the probe can be problematic for high temperature or reactive melts leading to contamination. An alternative contactless method of generating ultrasonic waves is proposed, using electromagnetic (EM) induction. As a bonus, the EM force induces vigorous stirring distributing the effect to treat larger volumes of material. In a typical application, the induction coil surrounding the crucible—also used to melt the alloy—may be adopted for this purpose with suitable tuning. Alternatively, a top coil, immersed in the melt (but still contactless due to EM force repulsion) may be used. 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Numerical simulations of sound, flow, and EM fields suggest that large pressure amplitudes leading to cavitation may be achievable with this method.</description><subject>Alloys</subject><subject>Characterization and Evaluation of Materials</subject><subject>Chemistry and Materials Science</subject><subject>Materials Science</subject><subject>Metallic Materials</subject><subject>Metals</subject><subject>Nanotechnology</subject><subject>Structural Materials</subject><subject>Surfaces and Interfaces</subject><subject>Symposium: Advances in Solidification of Metallic Alloys under External Fields</subject><subject>Thin Films</subject><subject>Ultrasonic technology</subject><issn>1073-5623</issn><issn>1543-1940</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp1kLFOwzAURS0EEqXwAWyRmE397NiJRxRBi1SJhc7Wi-OgVMEudjLw97gKAwvTu8O590mHkHtgj8BYtUkASgFlICmveUnlBVmBLAUFXbLLnFklqFRcXJOblI6MMdBCrcimCX5CO40upeIwThFTmH1XbJ13Each-GLwBRZNnO3Qju6WXPU4Jnf3e9fk8PL83uzo_m372jztqS25nmipsXNoodZMOkCsO4SSd6xvoWp7rQG7iqnaCagRoNUtyhat7W0G0FZCrMnDsnuK4Wt2aTLHMEefXxpQNQepKqUyBQtlY0gput6c4vCJ8dsAM2cvZvFishdz9mJk7vClkzLrP1z8s_xv6Qc5C2VU</recordid><startdate>20150701</startdate><enddate>20150701</enddate><creator>Bojarevics, Valdis</creator><creator>Djambazov, Georgi S.</creator><creator>Pericleous, Koulis A.</creator><general>Springer US</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>4T-</scope><scope>4U-</scope><scope>7SR</scope><scope>7XB</scope><scope>88I</scope><scope>8AF</scope><scope>8AO</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>KB.</scope><scope>L6V</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>Q9U</scope><scope>S0X</scope></search><sort><creationdate>20150701</creationdate><title>Contactless Ultrasound Generation in a Crucible</title><author>Bojarevics, Valdis ; 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Liquid contact with the probe can be problematic for high temperature or reactive melts leading to contamination. An alternative contactless method of generating ultrasonic waves is proposed, using electromagnetic (EM) induction. As a bonus, the EM force induces vigorous stirring distributing the effect to treat larger volumes of material. In a typical application, the induction coil surrounding the crucible—also used to melt the alloy—may be adopted for this purpose with suitable tuning. Alternatively, a top coil, immersed in the melt (but still contactless due to EM force repulsion) may be used. Numerical simulations of sound, flow, and EM fields suggest that large pressure amplitudes leading to cavitation may be achievable with this method.</abstract><cop>New York</cop><pub>Springer US</pub><doi>10.1007/s11661-015-2824-5</doi><tpages>9</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Alloys Characterization and Evaluation of Materials Chemistry and Materials Science Materials Science Metallic Materials Metals Nanotechnology Structural Materials Surfaces and Interfaces Symposium: Advances in Solidification of Metallic Alloys under External Fields Thin Films Ultrasonic technology |
| title | Contactless Ultrasound Generation in a Crucible |
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