Abstract
Accumulation of nitrogen in nanosized surface layers of 03Kh17N12M2 stainless steel has been detected upon N+ ion implantation up to 14 at % together with metal nitrides, mainly of chromium nitride CrN and interstitial solid solution. It has been demonstrated that N+ ion implantation accompanied by preliminary irradiation by Ar+ and O+ ions decreases maximum nitrogen concentration by at least two times. It is assumed that this is stipulated by segregation to surface layers of iron atoms upon irradiation by Ar+ ions as well as formation of chromium oxide Cr2O3 and chromium hydroxide CrOOH upon irradiation by O+ ions.
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