抄録
This report describes the some problems mainly on the experimental apparatus and procedures encountered in the measurements of the heats of formation of metal fluorides, especially of lanthanide trifluorides by the fluorine bomb calorimetry, which were carried out by us in the past nine years.
There involved are the handling of fluorine gas, the effects of the impurities contained in the metal samples and their states of combination, the handling of the metal samples in ambient and fluorine gas atmospheres, the method of burning of the metal samples, and the handling of the combustion products.
The comparison of our experimental results with those by the other methods of measurement is discussed. The application of the fluorine bomb calorimetry is refered to, and it is concluded that the fluorine bomb calorimetry is a very promising and useful method only if careful safty considerations are given to the handling of fluorine gas.
