Abstract
Diffusion technique of metallization is applied for receiving of zinc coatings on low-carbon steel with transitional zone. Structure of diffusion zinc layers after saturation of 09Mn2Si steel in ammonia at different temperatures is examined. Effects on saturation temperature on thickness of diffusion layers are discovered. Process at 600⁰C forms diffusion layers with high strengthening level and with smooth microhardness profiles. Elements (Fe, Zn, N) spectrums are analyzed, and phase composition of zinc coating and of transitional zone is determined.
Highlights
Zinc coatings are widely used for corrosion protection of steel components and constructions working in hard climatic conditions
Depth from coating, μm Saturation of low-carbon steel samples covered by zinc-containing suspension in ammonia allows forming a multiphase diffusion layer that composed of zinc coating and of transitional zone
After saturation at 6000C, parallel nitriding occurs, and strengthened transitional zone is formed with smoothly decreased microhardness by the depth
Summary
Zinc coatings are widely used for corrosion protection of steel components and constructions working in hard climatic conditions. Сorrosion damage is the main factor of reduced service life of bridge constructions elements made of low-carbon steels. For increase of such parts reliability, protective coatings are applied. Diffusion metallization methods are most in demand as they allow receiving gradient structure of the layer providing good adhesion of a coating with steel substrate [4,5]. As it was examined before, nitriding of zinc coatings improves their adhesion and enforces strengthening and increases wear resistance [6]. Zinc diffusion metallization in nitrogen-containing atmosphere may be the way to enhance the properties of steel surface providing protective layers resistant against ware and corrosion
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
