Intermetallic phases formed during tin implantation into iron and steels

Abstract

The surface layers of pure iron, high-carbon steel and stainless steel, ion implanted with 1 X 10 17 Sn+ cm-2 , have been characterized by means of 119Sn conversion electrons Mossbauer scattering. The intermetallic phases existent in the as-implanted samples are determined, and then the thermal decomposition of these phases are established. The phase transformations observed in the treated surfaces agree reasonably well with the phase diagrams reported in the literature for stoichiometric intermetallic phases formed in bulk.

Influence of Pre-Tinning Process on Coating Morphology and Interface Structure of Low Carbon Steel Dipped in Molten 6061 Al Alloy

“…It should be clarified that the aim is to strengthen the mechanical bond between steel and coatings through formation of an isolated layer that can prevent any possible oxidation reactions during the hot-dipping process. It was found that the presence of Sn facilitates to great extent the formation of better interlayer bonds that enhance the transfer of Al coating via steel substrate [18][19][20][21][22][23]. However, the following possible chemical reactions might be expected during tinning-dipping (Al coating) of steel substrate:…”

Formation of Intermetallic Phases in Ion Implantation

“…Improved surface properties due to the formation of intermetallic phases, including intermetallic nanostructures, were possibly due to the implantation of metal ions in the surface layers of other metals. Reports of studies in this area have appeared for a long time [4]. ese authors reported the formation of different phases in surface layer of steels and alloy layers depending on the conditions of implantation and subsequent annealing temperature.…”