Abstract
A study has been made of the solution-rate of dissolution of solid nickel in liquid bismuth under static and isothermal condition, at the temperature in the range 300∼400°. A continuous measurement of the solution-rate has been carried out by the electric resistivity method which is based on the measurement of resistivity of bismuth-solution varying with change in nickel-concentration. By this method, the solution-rate was obtained within the accuracy of 0.08 at%. On the other hand,the ordinary method by chemical analysis was done on the same system, showing the results in good agreement with those by the electric resistivity method. The solution-rate obtained has been found to obey an equation of the form n=ns{1−exp(−kSt⁄V)} and the activation energy of the dissolution was estimated to be about 2.2 kcal/mol.
