This paper presents an experimental investigation on the
tribological properties of coated duplex stainless steel
(DSS) containing SiC ceramic particles. The preplaced SiC
powder with 20 µm particle size and TIG torch surfacing
was conducted with energy inputs of 480, 768 and 1440
J/mm. The comparisons of the room temperature wear
behavior of substrate DSS and coated SiC duplex stainless
steel was carried out against alumina ceramic ball. The
effects of the process parameters on the hardness and wear
behavior were analyzed in this study. The coated surface of
DSS produced hardness about 2~4 times higher than
uncoated DSS. It was revealed that coated surface was
improved significantly with lower wear weight loss and
coefficient of friction (about 2 times lower) than the
substrate material. The embedded SiC into the surface of
steel has improved the wear behaviour of DSS. This is due
to SiC dendrites structure that strongly bonded to the steel
resulting the reduction of the friction between coated
surface and the alumina ball. The wear worn surface was
observed under SEM with a very mild abrasive wear for
coated surface compared to severe abrasive wear for
substrate DSS surface. The coated surface has showed
lower surface roughness and wear depth penetration
indicated that the presence of the SiC reduced the wear of the material
