DEPTH RESOLVING PHASE-ANALYSIS OF ION-IMPLANTED STAINLESS-STEEL

For a better understanding of the complex process of ion implantation the information on the composition in phases as a function of depth wi thin the implanted area is needed. In the present work a high austenit ic stainless steel of composition Fe62Ni20Cr18 was implanted with 400 keV Eu-151 ions with different doses up to 1.2 x 10(17) ions/cm(2). Th e depth profile of phases was determined by depth selective conversion electron Mossbauer spectroscopy (DCEMS). We observed a martensitic ph ase within a region of depth, that coincides with the elemental depth profile of the implanted Eu measured by Rutherford backscattering spec troscopy. Furthermore in connection with the DCEMS results the strong influence of adsorbate layers on the formation of the depth profile an d phases will be discussed.