Исследование водородостойкости, механических и трибологических свойств циркониевого сплава Э110 с покрытием нитрида титана, осажденного методом магнетронного распыления

Abstract

In this paper, the increase in hydrogen resistance, mechanical and tribological properties of E110 alloy samples by TiN protective coating deposition under high-temperature gas-phase hydrogenation at 350° C, 450° C and 900° C was shown. The crystalline structure, surface morphology and depth distribution of elements were analyzed by X-ray diffraction, optical microscopy and glow-discharge optical emission spectroscopy, respectively. The intensity of hydrogen absorption by TiN-coated E110 alloy increases with hydrogenation temperature. Hardness and Young's modulus of the TiN coatings slightly changed under hydrogenation up to 450°C and dropped at 900°C. No cracks or delaminations were observed on the surface of TiN-coated samples after hydrogenation up to 450°C, however, the film was cracked after hydrogenation at 900° C. Evolution of friction coefficient of hydrogenated samples was shown.