| Summary: | Surface treatment by ion implantation method has been able to improve
the mechanical properties and chemical properties of various material. Compared
with the conventional method, ion implantation technique has several advantages.
Some of the advantages are the high controllability of the process parameters
influencing the doping distributions and the process can be done at room
temperature so the possibility of thermal stress can be avoided. The aims of this
research are to study the effect of titanium ion implantation on the hardness and
corrosion resistance of Stainless Steel 304 and to find out the optimum dose
required in the titanium ion implantation process.
Titanium ion implantation has been done on Stainless Steel 304 with
dimensions of 14 mm in diameter and a thickness of 2mm in various of doses (by
varying duration of process of 1, 2, 3, 4, 5, and 6 hours) at certain current and
energy (10 μA and 100 keV). The corrosion device was the three-electrode
potential equipment Potensiostat/Galvanostat PGS 201 T and the corrosion media
was 0,6 % NaCl. Hardness testing was conducted by using Vickers method with
indentation load 10 gram.
The results showed that titanium ion implantation proved to increase the
hardness and corrosion resistance of Stainless Steel 304. The optimum condition
for increasing the hardness was achieved at 0.5367 x 1017 ions/cm2 (duration = 3
hours). In this condition, the Vickers Hardness Number was (268,33 20,27)
VHN, an increase of 93,50 % compared with that of the unimplanted condition.
While ± the optimum condition for increasing the corrosion resistance was achieved
at 0,5367 x 1017 ions/cm2 (duration = 3 hours). At this condition, the corrosion
rate was 1,2846 mmpy, a decrease of 30,57 % compared with that of the
unimplanted condition.
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