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MAX相Ti3SiC2管材在高溫高壓水和過熱蒸汽中的腐蝕行為
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作者單位:

1.上海大學材料研究所;2.中廣核研究院有限公司

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中圖分類號:

TL341

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事故容錯燃料關鍵技術研究,能源局重大專項,2015ZX06004-001


Corrosion Behavior of Max Phase Ti3SiC2 Tube in High-Temperature High-Pressure Water and Superheated Steam
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    摘要:

    MAX相材料有作為事故容錯燃料(Accident Tolerant Fuel,ATF)包殼材料的潛力,為了全面了解MAX相材料在模擬正常工況下的腐蝕行為,本工作使用基體為Ti3SiC2的MAX相陶瓷管材于400 ℃/10.3 MPa過熱蒸汽,360 ℃/18.6 MPa去離子水、3.5 ppm Li+1000 ppm B溶液和70 ppm Li溶液4種不同的水化學條件中進行腐蝕試驗,采用XRD、SEM和FIB/TEM觀察分析腐蝕前后樣品的顯微組織、晶體結構和成分。結果表明,Ti3SiC2管材在4種條件下的腐蝕速率均遠高于參比Zr-4合金,腐蝕后主要檢測到腐蝕產(chǎn)物TiO2,且其表面疏松多孔,未形成保護性的氧化膜。

    Abstract:

    MAX phases have the potential to be used as accident tolerant fuel (ATF) cladding materials. In order to fully understand the corrosion behavior of MAX phases under the simulated normal service conditions,the MAX phase ceramic tube with Ti3SiC2 matrix was exposed to 400 ℃/10.3 MPa superheated steam, 360 ℃/18.6 MPa deionized water, 3.5 ppm Li + 1000 ppm B solution and 70 ppm Li solution for corrosion tests. The microstructure, crystal structure and composition of the samples before and after corrosion were observed by XRD, SEM and FIB/TEM. The results show that the corrosion rates of Ti3SiC2 under the four corrosion conditions are all much higher than that of reference Zr-4 alloy, TiO2 was characterized as the main corrosion product; loose and no protective oxide film was formed on the surface of Ti3SiC2 tube.

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崔越,馬海濱,李思功,胡麗娟,張文懷,孫蓉蓉,任啟森,裴文,林雨晨,姚美意. MAX相Ti3SiC2管材在高溫高壓水和過熱蒸汽中的腐蝕行為[J].稀有金屬材料與工程,2023,52(3):982~988.[cui yue, ma haibin, li sigong, hu lijuan, zhang wenhuai, sun rongrong, ren qisen, pei wen, lin yuchen, yao meiyi. Corrosion Behavior of Max Phase Ti3SiC2 Tube in High-Temperature High-Pressure Water and Superheated Steam[J]. Rare Metal Materials and Engineering,2023,52(3):982~988.]
DOI：10.12442/j. issn.1002-185X.20220143

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  • 收稿日期:2022-02-25
  • 最后修改日期:2022-04-30
  • 錄用日期:2022-06-16
  • 在線發(fā)布日期: 2023-04-07
  • 出版日期: 2023-03-24