Abstract

This study was to analyse the relationship between process parameters of the sintered composite and plasma nitriding properties with pulsed DC plasma. Fe-40at%SiC_p composites of full density were fabricated by hot pressing at 1100~1150°C. Sintered Fe-40at%Al and Fe-40at%Al/SiC_p alloys were nitrided under pulsed DC plasma. Excellent surface hardness in the FeAl alloys could be obtained by plasma nitriding. (H_v :100gf, diffusion layer : 1100~1450kg/mm2, matrix : 330~360kg/mm2) The wear resistance of FeAl/SiC_p composites were improved about by 4~6times than FeAl and nitrided FeAl/SiC_p were improved about 2 times than FeAl/SiC_p matrix.