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Dependence of viscosity of Cu_9In_4 intermetallics melt on thermal history 被引量:1
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作者 CHENG Sujuan WANG Zhonghua +1 位作者 BIAN Xiufang SUI Xuepu 《Rare Metals》 SCIE EI CAS CSCD 2006年第1期27-31,共5页
The temperature dependence of the dynamic viscosity of Cu9In4 intermetallics melt has been investigated in five kinds of different heating and cooling processes with a torsional oscillation viscometer, It has been fou... The temperature dependence of the dynamic viscosity of Cu9In4 intermetallics melt has been investigated in five kinds of different heating and cooling processes with a torsional oscillation viscometer, It has been found that the viscosity of all Cu9In4 intermetallics decreases with increasing temperature in five kinds of different thermal processes. Thermal history has considerable effect on the viscosity. The viscosity in the cooling process with high superheating is greater than that in the cooling process with low superheating. The viscosity in the heating process is greater than that in the cooling process. No anomalous change in viscosity is measured in three kinds of cooling processes with low superheating. The anomalous change occurs at about 1050℃ in cooling with high superheating and at 800℃ in heating. Furthermore, the structural variation in different thermal processes has also been discussed on the basis of the change in viscosity and DSC analysis. 展开更多
关键词 liquid structure VISCOSITY torsional oscillation viscometer Cu9In4 intermetallics thermal history
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