3O8/UO2+x/UO2/U,而黃色區(qū)域的物質(zhì)組成結(jié)構(gòu)為UO2 x/UO2/U。"/>

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標(biāo)準(zhǔn)鹽霧環(huán)境下鈾鈦合金的腐蝕行為研究
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中國工程物理研究院,中國工程物理研究院,表面物理與化學(xué)重點實驗室,表面物理與化學(xué)重點實驗室,表面物理與化學(xué)重點實驗室,表面物理與化學(xué)重點實驗室

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中國工程物理研究院科學(xué)技術(shù)發(fā)展基金資助(項目號2010A0301014)


Corrosion Behavior of U-Ti Alloy in Standard Salt Spray Environment
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China Academy of Engineering Physics,China Academy of Engineering Physics,Science and Technology on Surface Physics and Chemistry Laboratory,Science and Technology on Surface Physics and Chemistry Laboratory,,Science and Technology on Surface Physics and Chemistry Laboratory

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    摘要:

    采用激光共聚焦顯微鏡(LSCM)、掃描電子顯微鏡(SEM)和X射線光電子能譜(XPS)技術(shù)研究了標(biāo)準(zhǔn)鹽霧環(huán)境下鈾鈦合金的表面腐蝕行為。結(jié)果表明,在標(biāo)準(zhǔn)鹽霧條件下,鈾鈦合金表面發(fā)生不均勻腐蝕,腐蝕程度主要受附著的液膜厚度和暴露時間影響。鈾鈦合金早期以點蝕為主,液膜越厚腐蝕越嚴(yán)重。隨著暴露時間的延長,腐蝕加劇,形成局域性的腐蝕,并出現(xiàn)腐蝕產(chǎn)物的開裂。對鈾鈦合金兩種典型腐蝕區(qū)域U4f譜的深度剖析表明,黑色區(qū)域的物質(zhì)組成結(jié)構(gòu)為U3O8/UO2+x/UO2/U,而黃色區(qū)域的物質(zhì)組成結(jié)構(gòu)為UO2 x/UO2/U。

    Abstract:

    Corrosion behavior of U-Ti alloys in standard salt spray environment was investigated by laser scanning confocal microscope (LSCM), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS), respectively. The results show that U-Ti alloys presented heterogeneous corrosion in the environment and corrosion extend of the alloys was mainly affected by thickness of liquid film and exposure time. Pitting corrosion was the main corrosion type for initial corrosion behavior of U-Ti alloys and corrosion extend was more grievous with the increasing thickness of liquid film and longer exposure time. Localized corrosion and the cracks of corrosion products occurred in the surface of U-Ti alloy. The U4f spectras of U-Ti alloys in two typical regions as a function of etching time show that the composition is U3O8/UO2+x/UO2/U in black region while the composition is UO2 x/UO2/U in yellow region.

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蔡定洲,飛躍,張煥林,羅麗珠,蔣春麗,桑革.標(biāo)準(zhǔn)鹽霧環(huán)境下鈾鈦合金的腐蝕行為研究[J].稀有金屬材料與工程,2017,46(8):2169~2174.[caidingzhou, feiyue, zhanghuanlin, luolizhu, jiangchunli, sangge. Corrosion Behavior of U-Ti Alloy in Standard Salt Spray Environment[J]. Rare Metal Materials and Engineering,2017,46(8):2169~2174.]
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  • 收稿日期:2015-04-20
  • 最后修改日期:2015-05-31
  • 錄用日期:2015-08-11
  • 在線發(fā)布日期: 2017-11-16
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