Effect of Siliconizing (Thermochemical Treatment) on the Corrosion and Wear Bahaviour of Heat-Treated Low Carbon Steel

Abstract

The effect of siliconizing on the corrosion behavior of heat-treated
low carbon steel was analyzed. The steel was siliconized from 800oC
to 1000oC with siliconizing time of 1 to 5hours. Hardness test was
carried out to determine the optimized condition. The corrosion
behavior was studied by varying HCl from 0.5 to 2.5M with time of
15 to 90days. The results obtained showed that optimized hardness
values were obtained by siliconizing at 1000oC for 3hours. Corrosion
rate increased with increase in concentration of HCl from 0.5 to
2.0M. The siliconized sample showed lower corrosion rate when
compared with the unsiliconized sample. The surface treatment
(siliconizing) offer some corrosion protection to the mild steel. The
wear rate was raised with increase in applied load and sliding speed.