Isothermal and cyclic oxidation behavior of AISI ۴۳۰ ferritic stainless steel coated with titanium

  • سال انتشار: 1397
  • محل انتشار: فصلنامه مواد پیشرفته و فرآوری، دوره: 6، شماره: 2
  • کد COI اختصاصی: JR_JMATPR-6-2_002
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 189
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نویسندگان

Saeed Keshavarz

Department of Metallurgy and Materials Science, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.

Morteza Zandrahimi

Department of Metallurgy and Materials Science, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, Iran.

Hadi Ebrahimifar

Department of Materials Engineering, Faculty of Sciences and Modern Technologies, Graduate University of Advanced Technology, Kerman, Iran

چکیده

In order to improve the oxidation resistance of ferritic stainless steel, it is possible to deposit a protective coating on steel substrate. In this research through the usage of pack cementation method a coating of titanium was applied on the surface of AISI ۴۳۰ stainless steel. Scanning Electron-Microscopy (SEM), Energy- Dispersive X-ray spectrometry (EDAX) and X-ray diffraction (XRD) were used for evaluating of coating structure. Results showed that titanium coating consisted of two layers with the total thickness of ۵۰ micron. The titanized layer consisted of TiFe, TiFe۲ and Fe۲TiO۵ phases. For investigating the oxidation behavior of coated and uncoated specimens, isothermal and cyclic oxidation tests were performed at ۱۰۰۰ C. In isothermal oxidation, the oxidation resistance of the titanium coated specimens was improved by restricting the outward penetration of chromium cation. The results of cyclic oxidation of titanium coated samples indicated that they were resistance to lamination and cracking.

کلیدواژه ها

AISI ۴۳۰ stainless steel, Titanium, pack cementation, oxidation

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