Abstract
The results of an investigation of the modified surface layers of high-speed steel AISI M2 after various kinds of ion implantation (high current ion implantation (HCII), plasma immersion ion implantation (PIII), implantation with separated ion beams (SIB) are presented. The results partially from our previous works (HCII, PIII) and some new data (HCII, PIII, SIB) are summarized here to compare the phase composition of steel after implantation of various kinds. The main research method was Mössbauer spectroscopy, combined with a measurement of mechanical properties of surfaces. A correlation between a phase composition of modified surface layers and their mechanical properties has been analyzed. Due to formation of thicker modified surface layers of steel with advanced mechanical properties the methods of HCII and PIII are the most perspective from a practical point of view comparing with method of SIB.
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