The temperature and oxygen pressure influence on the iron secondary ion emission

Investigations of secondary ion composition, ejected from the iron surface by an Ar+ beam with E=2keV and current density 5 x 10-7A/cm2, were carried out. The influence of the target temperature and oxygen partial pressure value near its surface on the composition and quantitative ratio of flow values of secondary ions ejected from the target is shown. A strong effect of bulk admixtures (C.S.P) on the temperature dependences of mass line intensities of secondary ions of oxides, carbides, sulphides and phosphides of iron in the high temperature ranges is discovered. The influence of two mechanisms of carbon diffusion on coverage size of the target surface by iron carbides is observed. (Auth.)