Abstract
In order to study the effect of carbon ion implantation on the aqueous corrosion behavior of ZIRLO alloy, specimens were implanted with carbon ions with fluence ranging from 1 x 10 16 to 1 × 10 17 ions/cm 2 , using a metal vapor vacuum arc source (MEVVA) at an extraction voltage of 40 kV. The valence states and depth distributions of elements in the surface layer of the samples were analyzed by X-ray photoelectron spectroscopy (XPS) and auger electron spectroscopy (AES), respectively. Transmission electron microscopy (TEM) was used to examine the microstructure of the carbon-implanted samples. Glancing angle X-ray diffraction (GAXRD) was employed to examine the phase transformation due to the carbon ion implantation. The potentiodynamic polarization technique was employed to evaluate the aqueous corrosion resistance of implanted ZIRLO alloy in a 1 M H 2 SO 4 solution. It was found that a significant improvement was achieved in the aqueous corrosion resistance of ZIRLO alloy implanted with carbon ions. The higher the fluence, the worse is the corrosion resistance. Finally, the mechanism of the corrosion behavior of carbon-implanted ZIRLO alloy was discussed.
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