Electrical resistance behavior of the Na-NaOH system

It was necessary to study the Na-NaOH system used in chemical and metallurgical industries in order to develop methods of preventing it from corroding structural materials. In addition, it is possible for water to enter the sodium loop of sodium-water steam generators to form NaOH, Na2O, and NaH impurities in the sodium. The impurities may markedely affect the corrosion, thermal, and other properties of the coolant. One of the possible methods for monitoring the impurities is by measuring the electrical resistance of the liquid metal. An analysis of such measurements can reveal properties that characterize the sodium-impurity systems, i.e., scattering cross section of electrons on impurity atoms and phase transitions. The effect of oxygen on the resistance of sodium has been studied in detail. It was shown that hydrogen impurity raises the resistance to a greater extent than oxygen