Corrosion behaviour of sintered ferrous alloys and ferro-TiC in H2SO4 and NaCl

The room temperature corrosion behaviour of plain carbon steel Fe-0.5C, low alloy steel Fe-5Cu-0.5C, tool steels ASP 23 and ASP 30, and ferro-TiC cerm et was investigated in H2SO4 (0.1-5 N) and 0.6 N NaCl solutions by potentio dynamic polarization technique. The study also includes X-ray diffraction, optical microscopy and scanning election microscopy of the as-received as w ell as corroded surfaces. Porosities present in Fe-0.5C and Fe-5Cu-0.5C ste els were found to be responsible for their poor corrosion resistance. ASP 3 0 steels were found to exhibit good corrosion resistance as compared to ASP 23 in both the media.