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| 1 | Density Measurement of Liquid Ni-Ta Alloys by a Modified Sessile Drop Method显示文摘The density of liquid Ni-Ta alloys was measured by using a modified sessile drop method. It is found that the density of the liquid Ni-Ta alloys decreases with the increasing temperature, but increases with the increase of tantalum concentration in the alloys. The molar volume of liquid Ni-Ta binary alloys increases with the increase of temperature and tantalum concentration. | 方亮 | 2005 | Journal of Wuhan University of Technology(Materials Science)2005，20，2： | 1 |
| 2 | Surface tension of molten Ni-(Cr,Co,W) alloys and segregation of elements显示文摘Surface tension of molten Ni-(Cr,Co,W) alloys was measured at the temperature of 1 773-1 873 K in an Ar+3%H2 atmosphere using an improved sessile drop method.The segregation of Cr,Co and W in alloy was calculated and analyzed using Butler's equation.The results show a good agreement between measured and calculated data.The surface tension of molten Ni-(Cr,Co,W) alloys decreases with increasing temperature.In Ni-(Cr,Co,W) alloys,the element with lower surface tension tends to segregate on the surface of molten alloy while that with higher surface tension tends to segregate inside of the molten alloy.The larger the differences in surface tension,atom radius and electron configuration between solvent and solute are,the more significant the segregation is.As a result,Ni segregates onto the surface and Co and W segregate inside the alloys. | 肖锋 刘兰霄 杨仁辉 赵红凯 方亮 张弛 | 2008 | 中国有色金属学会会刊:英文版2008，18，5： | 1 |
| 3 | Density of liquid NiCoAlCr quartemary alloys measured by modified sessile drop method显示文摘The densities of liquid NiCoAlCr quaternary alloys with a fixed molar ratio of Ni to Co to Al (x(Ni):x(Co):x(Al)≈73:12.15) which is close to the average value of the commercial Ni-based superalloys TMS75, INCO713, CM247LC and CMSX-4, and the mass fraction of chromium changes from 0 to 9% were measured by a modified sessile drop method. It is found that with increasing temperature and chromium concentration in the alloys, the densities of the liquid NiCoAlCr quaternary alloys decrease, whereas the molar volume of the liquid NiCoAlCr quaternary alloys increases. And the liquid densities of NiCoAlCr quaternary alloys calculated from the partial molar volumes of nickel, cobalt, aluminum and chromium in the corresponding Ni-bases binary alloys are in good agreement with the experimental ones, i.e. within the error tolerance range the densities of the liquid Ni-based multi-component alloys can be predicted from the partial volumes of elements in Ni-based binary alloys in liquid state. The molar volume of liquid NiCoAlCr binary alloy shows a negative deviation from the ideal linear mixing and the deviation changes small with the increase of chromium concentration at the same temperature. | 方亮 张淑芳 肖锋 杨凌川 董建新 曹春兰 陶再南 K.MUKAI | 2006 | 中国有色金属学会会刊:英文版2006，16，A03： | 0 |
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