Drotning W D
Sandia Laboratories, Albuquerque, New Mexico 87185.
Rev Sci Instrum. 1979 Dec;50(12):1567. doi: 10.1063/1.1135760.
A new technique is described for the measurement of the thermal expansion of isotropic solid materials at high temperatures. The method utilizes gamma attenuation to measure thermal expansion with a noncontacting probe. The experimental apparatus and analytical method are described, and results are presented for aluminum to 900 K and type 303 stainless steel to 1660 K to illustrate the use and precision of the technique. These results agree with published values measured by other techniques, and in the case of the stainless steel alloy, some new results are presented in the temperature range 1400-1660 K.
本文描述了一种用于测量各向同性固体材料在高温下热膨胀的新技术。该方法利用伽马射线衰减，通过非接触式探头测量热膨胀。文中介绍了实验装置和分析方法，并给出了铝在900K以及303型不锈钢在1660K时的测量结果，以说明该技术的应用和精度。这些结果与其他技术测得的已发表值相符，对于不锈钢合金，还给出了1400 - 1660K温度范围内的一些新结果。
