PRINCIPLE AND METHOD OF REFRACTORY THERMAL CONDUCTIVITY MEASUREMENT BY LASER FLASH METHOD

According to the theory and physical model of thermal conductivity measuring instrument by laser flash method,thermal diffusivity and heat specific capacity calculation formula were deduced,and in the way the principle of the method was interpreted in the text. Take FLASHLINE-5000 thermal diffusivity as example,the main ingredients of the instrument were introduced and also the operation procedure and calculating method were illustrated.