Influence of Mechanical Surface Treatments on Sandelin Phenomenon in Silicon Containing Steels

Abstract

In this study, the influence of mechanical surface treatments on the Sandelin Phenomenon in silicon containing steels was investigated. For this purpose, various surface topographies with/without deformed zones were produced on the steel samples with different silicon contents by applying mechanical surface treatments such as grinding, and polishing in addition to conventional pickling. Hot-dip galvanized coatings formed on the conditioned surfaces were examined through cross-sections with optical microscope and scanning electron microscope. The results indicate that surface topography is the main factor controlling the stability of a hot-dip galvanizing coating and a surface topography with intermediate roughness and sharp asperities formed with abrasive particles in the range of 100 - 270 μm can produce suitable coatings on the silicon containing steels