Corrosion Behavior of Pure Ti under a Solid NaCl Deposit in a Wet Oxygen Flow at 600 °CReportar como inadecuado




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Institute of Metal Research, Chinese Academy of Sciences, Wencui Road 62, Shenyang 110016, China

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Key Laboratory for Anisotropy and Texture of Materials MoE, School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China





*

Authors to whom correspondence should be addressed.



Academic Editor: Hugo F. Lopez

Abstract The corrosion behavior of pure Ti under a solid NaCl deposit in a wet O2 flow at 600 °C has been studied. The results showed that the corrosion rate was greatly accelerated by solid NaCl, which destroyed the compact and protective TiO2 scale to yield non-protective N4Ti5O12 and other products. Detailed scanning electron microscopy SEM equipped with an energy dispersive spectrometer EDX, and X-ray diffraction XRD analysis showed that, during the corrosion process, the metal Ti diffused outward rapidly and reacted with the wet O2 to form a thick and porous corrosion products scale. The electrochemical reaction was also observed during the whole corrosion process at 600 °C, which further accelerated the corrosion rate. A possible mechanism has been proposed for pure Ti covered with a solid NaCl deposit in wet O2 at 600 °C, based on the experimental results. View Full-Text

Keywords: titanium; corrosion; solid NaCl deposit; intermediate temperature; potentiodynamic polarization titanium; corrosion; solid NaCl deposit; intermediate temperature; potentiodynamic polarization





Autor: Lei Fan 1, Li Liu 1,* , Min Cao 1, Zhongfen Yu 2, Ying Li 1,* , Minghui Chen 2 and Fuhui Wang 1,2

Fuente: http://mdpi.com/



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