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Density of liquid NiCoAlCr quartemary alloys measured by modified sessile drop method

查看全文 作　　者：[1]方亮;[1]张淑芳;[2]肖锋;[1]杨凌川;[1]董建新;[3]曹春兰;[4]陶再南;[4]K.MUKAI 高影响力作者 机构地区：[1]Department of Applied Physics,Chongqing University,Chongqing 400044,China;[2]Chongqing Institute of Technology,Chongqing 400050,China;[3]Department of Physics,Chongqing Communication Institute,Chongqing 400035,China;[4]Satellite Venture Business Laboratory,Kyushu Institute of Technology,Kitakyushu 804-8550,Japan高影响力机构 出　　处：《中国有色金属学会会刊:英文版》索引2006年第16卷第A03期,共5页高影响力期刊 基　　金：Project(NCET-05-0764) supported by the Program for New Century Excellent Talent in University;project(2004527) supported by SRF for ROCS, SEM 摘　　要：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. 关 键 词：钴合金 有色金属 液相 抗热性
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