Abstract
The results of experiments on low-energy nitrogen ions implantation in stainless steel AISI 321 are presented. The treatment was carried out with a pulsed beam of nitrogen ions obtained using a ballistic system of ion focusing. The source of ions was nitrogen plasma of a non-independent gas arc discharge with a heated cathode. It was shown that the specimen surface is subjected to ion etching, which leads to the formation of a well, whose profile depends on the ionic exposure parameters. In addition, when treating specimen in such a system, the surface hardness increases up to 4 times. The increase in hardness occurs due to the formation of a modified layer in the surface, with a thickness of up to 50 microns, containing iron and chromium nitrides.
Highlights
The formation of a pickling hole on the sample surface as a result of ion etching is shown. The profile of this hole is depends on the parameters of ion beam action
An increasing of surface hardness up to 4 times when processing stainless steel in such system is shown
The hardness increasing is due to the formation of a modified layer in the surface occurs
Summary
A.I. RYABCHIKOV1, YU.H. AKHMADEEV2, I.V. LOPATIN2, O.V. KRYSINA2, D.O. SIVIN1, O.S. KORNEVA1, P.S. ANANIN1, S.V. DEKTYAREV1 The results of experiments on the low-energy implantation of nitrogen ions in stainless steel 12X18H10T (analogue of AISI 321) are presented.
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