XPS examination of the native oxide layer on Kovar using aluminium, magnesium and silver x-ray sources

Kovar, a common glass-to-metal sealing alloy, has been analysed by XPS. Monochromatic aluminium and silver sources as well as an achromatic magnesiumx-ray source have been utilised to demonstrate the increased clarity of spectra that can be obtained through the use of each x-ray source in the analysis of a transition metal rich alloy.