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| SEMICONDUCTOR CHARACTER OF PASSIVE FILMS FORMED ON 304L STAINLESS STEEL IN ZINC CONTAINED HIGH TEMPERATURE WATER |
| ZHANG Shenghan, LIAN Jia, TAN Yu |
| Environment Science and Engineering School,North China Electric Power University, Baoding 071003 |
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Abstract Semiconductor properties of the passive film formed on 304L stainless steel (SS) in high-temperature and high-pressure water with (or no) zinc addition were investigated using anodic polarization curves, Mott-Schottky plots and photocurrent method in buffer solution. And the donor density, flat band and band gap were analyzed to investigate the effect of zinc addition on the passive film particularly. The results indicated that the passive film formed on 304L with zinc addition was composed of many layers; the passive film with zinc addition behaved as a n-type semiconductor, a p-type with no zinc addition; the flat band shifted negatively; the carrier concentration reduced; It was concluded that zinc addition had great influence in the structures and semiconductor properties of 304L stainless steel (SS).
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Received: 29 November 2010
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