The laser flash method was employed to explore the heat transfer behaviors of Ag-x at.% Si (where x = 0, 5, 11, 25, 50, 75 and 100) alloys over a wide temperature range from 293 to 823 K. The temperature dependency of specific heat and thermal diffusivity were determined by a differential scanning calorimeter and laser flash equipment. Accordingly, the thermal conductivity of Ag–Si alloys was derived. It is found that the thermal conductivity decreases with increasing temperature. At a certain temperature, there is a sharp decline of thermal conductivity with the rising Si content before it reaches the eutectic composition. The decreasing rate of conductivity with rising Si content reduces when Si content is larger than 11%. The microstructures of Ag–Si alloys reveal that the abnormal thermal conductivity at eutectic composition may be caused by the large amount of phase boundaries.

激光闪光法被用来研究Ag- x at。％Si（其中x = 0、5、11、25、50、75和100）合金在293至823 K的较宽温度范围内。比热和热扩散率的温度依赖性由差示扫描量热仪和激光闪光设备确定。因此，得出了Ag-Si合金的热导率。发现随着温度的升高，热导率降低。在一定温度下，随着硅含量的增加，在达到共晶成分之前，热导率会急剧下降。当Si含量大于11％时，随着Si含量的增加，电导率的降低率降低。Ag-Si合金的微观结构表明，共晶成分的异常热导率可能是由于大量的相界引起的。