Abstract
Studies of the frictional interaction between samples of standard elements simulating contact conditions in a friction couple consisting of a fuel cell shell and a spacing grid cell were conducted. The studies were carried out with a special test bench. The effects of the load parameters, the contact geometry of the specimens, and the state of the working surfaces on friction processes were studied. The values of the friction factors for elements made of zirconium alloys were obtained, which are needed for calculation and experimental testing of the strength of a fuel assembly. The presence of protective oxide films on the friction surfaces of specimens is shown to significantly reduce the friction factor and diminish the probability of seizure.
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