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電極材料在鐵磷酸鹽玻璃熔體內(nèi)腐蝕現(xiàn)象的研究
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TQ171

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Study on the Corrosion of Electrode Materials in Iron Phosphate Glass Melts
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    摘要:

    選用合金Inconel 690和693作為研究對象,著重研究了它們在鐵磷酸鹽玻璃熔體中的腐蝕行為。分別計算了不同電極材料的尺寸損失和質(zhì)量損失,以及相應的損失速率,采用SEM,EDS和XRD等手段對材料表面的腐蝕層進行了分析,確定了腐蝕層的成分,主要相組成及其晶粒形態(tài),討論了材料腐蝕發(fā)生的可能機理。結(jié)果表明,在玻璃熔體內(nèi),合金Inconel 693比Inconel 690更耐腐蝕。隨著腐蝕時間的延長,合金的腐蝕速率都逐漸降低。合金試樣表面的腐蝕層主要由固熔體(Fe,Cr)2O3組成。

    Abstract:

    Inconel alloy 690 and Inconel alloy 693 were chosen as the electrode materials in this study and their corrosion behaviors in iron phosphate glass melt containing low activity(LAW)nuclear waste was explored.The corrosion losses in size and weight of different materials in glass melt were calculated.The corrosion layer formed on the surface of the alloys was analyzed by Scanning Electron Microscope(SEM),Energy Dispersive X-Ray analysis(EDS)and X-ray diffraction(XRD),and the corrosion mechanism was discussed.Results show that the Inconel alloy 693 is more stable than the Inconel alloy 690 in the glass melt.A kind of solid solution,(Fe,Cr)2O3,was believed to be the main crystalline phase in the corrosion layer on the surface of alloy samples.

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朱冬梅 Chcol-Woon Kim Delbert E. Day.電極材料在鐵磷酸鹽玻璃熔體內(nèi)腐蝕現(xiàn)象的研究[J].稀有金屬材料與工程,2006,35(9):1424~1427.[Zhu Dongmei, Cheol-Woon Kim, Delbert E Day. Study on the Corrosion of Electrode Materials in Iron Phosphate Glass Melts[J]. Rare Metal Materials and Engineering,2006,35(9):1424~1427.]
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  • 收稿日期:2005-08-08
  • 最后修改日期:2005-08-08
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