【摘要】 采用新的阳极溶解的计时电位法,测定了稀土金属镧在铝液中的扩散系数。在973K时,测得（Al）=（1.21±0.02）×15⁵cm²·s^-1。在953～1053K温度范围内,扩散系数与温度的关系为lgD_La（Al）=1.04×10^-4—4770/T,计算出扩散激活能Q=91.34KJ/mol。更多还原

【Abstract】 The diffusion coefficient of La in liquid A1 has been measured by anodic chronopotentiometry. At temperature 973K, （?）=（1.21±0.02）×10^-5cm.s^-1. The relationship between diffusion coefficient and temperature is expressed by the equation lgD=1.04×10^-4-4770/T in the range of temperature 953～1053K. Activation energy is 91.34kJ/mol.更多还原