IMPLANTATION OF BORON IONS INTO HARD METALS

I. Mrochek1, R. Guenzel1, W. Matz1, W. Moeller1, V. Anishchik2

1 Forschungszentrum Rossendorf, Institute of Ion Beam Physics and Materials Research, P.O. Box 510119, D-01314 Dresden, Germany,
2 Belorussian State University, Pr. F. Skoriny, 220050 Minsk, Belorussia


The present study has shown that hardness and wear behaviour of (15%Co)-cemented WC alloys can be improved by boron ion implantation. The B+ implantation was carried out at different temperatures. Three ion fluences have been chosen: 5x1016 cm-2, 1x1017 cm-2 and 5x1017 cm-2, each at an energy of 40 keV. The XRD analysis has shown that after implantation one observes a broadening of the XRD tungsten carbide peaks towards smaller angels. An optimisation between the boron fluences and temperature has still to be performed.