Improvement of Hot Corrosion Resistance of Austenitic Stainless Steel by Chromizing-Siliconizing | ||
| Journal of University of Babylon | ||
| Article 1, Volume 22, Issue 4, June 2014, Pages 788-796 | ||
| Authors | ||
| Ali Hobi Halem; Haydar Hassan Jaber; Roaa Hatim Hatif | ||
| Abstract | ||
| Simultaneous deposition of chromium and silicon by pack cementation is very effective in protecting substrates from hot corrosion and oxidation environments at high temperature. In this study, chromium and silicon were simultaneously deposited by diffusion into austenitic stainless steel 316L alloy by the pack cementation process using a pack mixtures containing (67 wt. % Cr, 8wt. %Si, 2wt. %NH4Cl and 23wt. %Al2O3) when required. It was found that diffusion coating time of six hours at 950oC produces coating thickness of 80-100μm and consist mainly of CrSi2 and Cr3Si phases. | ||
| Keywords | ||
| Diffusion Coating; pack mixture; cementation; hot corrosion; stainless steel | ||
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