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The dynamic viscosity of pure In, In-1%Sb (mass fraction, so as the follows) alloy, In-55%Sb hypoeutectic alloy and In-69.5%Sb eutectic alloy was measured by using a torsional oscillation viscometer at different temperatures above liq-uidus. The experimental results show that the viscosity of these melts decreases with increasing temperature. The anomalous change of viscosity occurs at about 430 and 470℃in pure In melt. The variation of viscosity with temperature well meets exponential correlation and no anomalous change occurs in measured temperature range in the In-1%Sb alloy melt. A transition occurs at about 800℃ in both of In-55%Sb and In-69.5%Sb alloy melts. The sudden change of viscosity suggests the structure change of melts. DSC (differential scanning calorimetry) curves of In-1%Sb alloy during heating and cooling were measured, and the results show that no structural variation in In-1%Sb alloy melt was testified further. In addition, the viscosity of In melt decreases with the addition of1%S
In-55% Sb hypoeutectic alloy and In-69.5% Sb eutectic alloy was measured by using a torsional oscillation viscometer at different temperatures The experimental results show that the viscosity of these melts decreases with increasing temperature. The anomalous change of viscosity occurs at about 430 and 470 ° C in pure In melt. The variation of viscosity with temperature well meets exponential correlation and no anomalous change A transition occurs at about 800 ° C in both of In-55% Sb and In-69.5% Sb alloy melts. The sudden change of viscosity suggests the structure change of melts DSC (differential scanning calorimetry) curves of In-1% Sb alloy during heating and cooling were measured, and the results show that no structural variation was in-1% Sb alloy melt was testified further. decreases wit h the addition of1% S