Investigation of chemical phase formation in the ternary system beryllium, carbon and tungsten with depth-resolved photoelectron spectroscopy

Synchrotron radiation XPS with different photon energies is used to gain depth-resolved chemical information. The temperature-dependent evolution of a ternary system sample with beryllium, carbon and tungsten is investigated. Five temperature steps are performed in order to analyze the kinetic processes and chemical states, namely 300, 530, 850, 1020 and 1200 K. After each temperature treatment, the sample composition is analyzed using four different information depths.