Thermal expansivity and density of indium

Abstract

The linear thermal expansion of cast innium of high purity was investigated between -190° and + lOO°C and the cubical t.hermal expansion between 0° and The linear thermal expansion of cast innium of high purity was investigated between -190° and + lOO°C and the cubical t.hermal expansion between 0° and .':iO°C. The following equation was derived for the linear expansion of indium: between -190° and + lOO°C and the cubical t.hermal expansion between 0° and .':iO°C. The following equation was derived for the linear expansion of indium: where Lo repre~ents the length of the metal at DoC, and L, the length at any temperature, t, within the range of the observations. The average coefficients where Lo repre~ents the length of the metal at DoC, and L, the length at any temperature, t, within the range of the observations. The average coefficients of cubical expansion of indium were found to he 77X 10-6 and 101 X 10-6 per temperature, t, within the range of the observations. The average coefficients of cubical expansion of indium were found to he 77X 10-6 and 101 X 10-6 per degree centigrade for the ranges 0° to 25°C and 25° to 50°C, respect.ively. These of cubical expansion of indium were found to he 77X 10-6 and 101 X 10-6 per degree centigrade for the ranges 0° to 25°C and 25° to 50°C, respect.ively. These coefficients of cubical expansion are not equal LO three times the coefficients of degree centigrade for the ranges 0° to 25°C and 25° to 50°C, respect.ively. These coefficients of cubical expansion are not equal LO three times the coefficients of linear expansion for the corresponding temperature ranges on account of the coefficients of cubical expansion are not equal LO three times the coefficients of linear expansion for the corresponding temperature ranges on account of the anisotropy of indium. linear expansion for the corresponding temperature ranges on account of the anisotropy of indium. The density of cast anisotropy of indium. The density of cast indium was found to be 7.281 g/cm3 at 22.6°C. The density of indium calculated from the best available data on atomic weights and The density of cast indium was found to be 7.281 g/cm3 at 22.6°C. The density of indium calculated from the best available data on atomic weights and lattice constant.s is r.te g/cm3• Observed densities at 0°, 25°, and 50°C are also from the best available data on atomic weights and lattice constant.s is r.te g/cm3• Observed densities at 0°, 25°, and 50°C are also density of indium calculated from the best available data on atomic weights and lattice constant.s is r.te g/cm3• Observed densities at 0°, 25°, and 50°C are also given in this paper. ~ lattice constant.s is r.te g/cm3• Observed densities at 0°, 25°, and 50°C are also given in this paper. I-I