Investigation of Isothermal and Cyclic Oxidation Behavior of Codeposited 430 Ferritic Stainless Steel with Aluminum and Titanium

Authors

1 1. Department of Materials Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman

2 2. Department of Materials Engineering, Faculty of Mechanical and Materials Engineering, Graduate University of Advanced Technology.

Abstract

In order to improve the oxidation and hot corrosion resistance of steels, various elements including aluminum, chromium, silicon, titanium or combination of these elements can be diffused on to the surface of steel. In this study, aluminum and titanium were simultaneously co-deposited onto the AISI 430 ferritic stainless steel substrate by the pack cementation process. Coating was examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The coating consised of two layers with the thickness of approximately 14 microns. The results obtained by XRD showed the existence of FeTi, TiO2, AlTi, Al3Ti and Al5Ti phases in the coating. Isothermal oxidation and cyclic oxidation were carried out at 1000○C. It was showed that the diffusional coating of aluminum-titanium led to the improvement of cycle and isothermal oxidation resistance.

Keywords

References

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Journal of Advanced Materials in Engineering (Esteghlal)
Volume 37, Issue 3
December 2018
Pages 13-23

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