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Surface tension measurement of undercooled liquid Ni-based multicomponent alloys

机译：过冷液态镍基多组分合金的表面张力测量

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摘要

The surface tensions of liquid ternary Ni-5%Cu-5%Fe, quaternary Ni-5%Cu-5%Fe-5%Sn and quinary Ni-5%Cu-5%Fe-5%Sn-5%Ge alloys were determined as a function of temperature by the electromagnetic levitation oscillating drop method. The maximum undercoolings obtained in the experiments are 272 (0.15T L), 349 (0.21T L) and 363 K (0.22T L), respectively. For all the three alloys, the surface tension decreases linearly with the rise of temperature. The surface tension values are 1.799, 1.546 and 1.357 N/m at their liquidus temperatures of 1719, 1644 and 1641 K. Their temperature coefficients are −4.972 × 10-4, −5.057 × 10−4 and −5.385 × 10−4 N/m/K. It is revealed that Sn and Ge are much more efficient than Cu and Fe in reducing the surface tension of Ni-based alloys. The addition of Sn can significantly enlarge the maximum undercooling at the same experimental condition. The viscosity of the three undercooled liquid alloys was also derived from the surface tension data.View full textDownload full textKeywordssurface tension, undercooling, multicomponent alloysRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500839.2012.685768
机译：液态三元Ni-5％Cu-5％Fe，四元Ni-5％Cu-5％Fe-5％Sn和五元Ni-5％Cu-5％Fe-5％Sn-5％Ge合金的表面张力通过电磁悬浮振荡降落法确定温度的函数。在实验中获得的最大过冷度为272（0.15T L ），349（0.21T L ）和363 K（0.22T L L >）。对于所有三种合金，表面张力都随着温度的升高而线性降低。在其液相线温度分别为1719、1644和1641K时，表面张力值为1.799、1.546和1.357N / m。它们的温度系数分别为4.94.972â10 -4 ，5.05.057â10和[5.385] – 10 ˆ4 N / m / K。结果表明，Sn和Ge在降低Ni基合金的表面张力方面比Cu和Fe有效得多。在相同的实验条件下，添加Sn可以显着增大最大过冷度。三种过冷液态合金的粘度也可以从表面张力数据得出。查看全文下载全文关键词表面张力，过冷，多组分合金technorati，delicious，linkedin，facebook，stumbleupon，digg，google，more“，发布：” ra-4dff56cd6bb1830b“};添加到候选列表链接永久链接http://dx.doi.org/10.1080/09500839.2012.685768

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