Abstract
Structural properties of Kr ion beam mixed layers of tungsten deposited on high-speed steel have been studied by using Grazing incidence X-ray diffraction, conversion electron Mössbauer spectroscopy and Auger electron spectroscopy techniques. The results show that ion beam mixing at room temperature leads to the formation of an amorphous layer composed of the mixture of amorphous tungsten and amorphous Fe–W phase. The amorphous structure is stable upon annealing up to at least 450 °C. The ion beam mixing at the temperatures above 350 °C results in the formation of crystalline W 2C phase in addition to the amorphous Fe–W one persisting up to at least 450 °C.
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