کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5370341 | 1388483 | 2006 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of the heat treatment on the corrosion behaviour of amorphous Fe-Cr-P-C-Si alloy in 0.5 M H2SO4 Effect of the heat treatment on the corrosion behaviour of amorphous Fe-Cr-P-C-Si alloy in 0.5 M H2SO4](/preview/png/5370341.png)
The effect of the heat treatment on the corrosion behaviour of amorphous Fe85Cr5P6C3Si alloy in 0.5 M H2SO4 has been investigated using electrochemical techniques. Heat treatment was carried out at temperatures varying between 250 and 650 °C at different times 30, 60, 120 and 240 min. The evolution of crystallization processes after annealing was identified by differential thermal analysis (DTA) and by X-ray diffraction (XRD). The diagrams obtained by DTA show that the structure of samples treated at high temperature changes towards a crystalline state. This crystallization phenomenon is confirmed by the analysis with the XRD. The results obtained from the polarization curves reveal that for all the studied temperatures of annealing, Fe-Cr-P-C-Si exhibits a phenomenon of passivation without breakdown of passivity. The best corrosion resistance is obtained at the temperature of annealing 350 °C. For an annealing at higher temperatures, Fe85Cr5P6C3Si becomes less corrosion resistant than same amorphous alloy treated with temperatures lower than 350 °C.
Journal: Applied Surface Science - Volume 252, Issue 22, 15 September 2006, Pages 7921-7925