Auger-spectrum simulation techniques for surface analysis of alloys with overlapping peaks: sputtered and annealed W—Mo alloys

The surface composition of a 50% W—Mo alloy has been investigated using Auger electron spectroscopy. Problems arising from carbon contamination and the strong overlap of the intense, surface-sensitive low-energy Auger peaks have been solved. Spectra for the alloy were collected digitally and could be simulated satisfactorily using pure-element spectra. The steady-state surface composition under 500 V Ar+ ion bombardment shows an enrichment of …