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Na5P3O10體系氫化鋯表面微弧氧化陶瓷層組織與阻氫性能的研究
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國(guó)家自然科學(xué)基金（51164023）；新世紀(jì)優(yōu)秀人才支持計(jì)劃資助（NCET-13-0847）；內(nèi)蒙古自治區(qū)高等學(xué)校青年科技英才支持計(jì)劃（NJYT-13-B10）


Microstructure and Hydrogen Permeation Resistance of Zirconium Hydride Coated by Micro Arc Oxidation Process in Na5P3O10 Solution
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    摘要:

    在Na5P3O10+NaOH+Na2EDTA體系下，采用恒壓模式對(duì)氫化鋯進(jìn)行微弧氧化處理獲得連續(xù)、致密且裂紋、孔洞等缺陷較少的ZrO2陶瓷層。通過(guò)掃描電鏡(SEM)、X射線衍射(XRD)及能譜(EDS)儀，分析了陶瓷層的表面形貌、截面形貌、相結(jié)構(gòu)及元素分布。通過(guò)真空脫氫實(shí)驗(yàn)及XRD分析對(duì)陶瓷層的阻氫性能進(jìn)行評(píng)價(jià)。結(jié)果表明：氫化鋯表面ZrO2陶瓷膜厚度約為78 μm，陶瓷層由過(guò)渡層、致密層和疏松層構(gòu)成；ZrH1.8 表面微弧氧化陶瓷層主要由M-ZrO2、T-ZrO2及C-ZrO2構(gòu)成，主要為M-ZrO2，約90%; 微弧氧化陶瓷層氫滲透降低因子(PRF)高達(dá)11.7，具有優(yōu)越的阻氫效果。

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    A dense and continuous coating with less cracks and holes was obtained by micro-arc oxidation (MAO) process in an electrolyte composed of Na5P3O10+NaOH+Na2EDTA under the constant voltage mode. The surface and cross-sectional morphologies, phase structures and chemical composition of the coatings were characterized by scanning election microscopy (SEM), X-ray diffraction (XRD) and energy disperse spectroscopy (EDS), respectively. The hydrogen permeation performance of the oxide films was evaluated by vacuum dehydrogenation experiment and XRD. The results show that the obtained coating with an average thickness of 78 μm contains a transition layer, a dense layer and a loose layer. The coating is mainly composed of M-ZrO2, T-ZrO2 and C-ZrO2, and M-ZrO2 accounts for about 90%. The PRF (permeation reduction factor) value of the oxide film reaches up to 11.7, which indicates that the ZrO2 ceramic coating formed on the surface of ZrH1.8 has a superior hydrogen anti-permeation effect.

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王志剛,陳偉東,閆淑芳,范秀娟,徐志高. Na5P3O10體系氫化鋯表面微弧氧化陶瓷層組織與阻氫性能的研究[J].稀有金屬材料與工程,2015,44(11):2877~2881.[Wang Zhigang, Chen Weidong, Yan Shufang, Fan Xiujuan, Xu Zhigao. Microstructure and Hydrogen Permeation Resistance of Zirconium Hydride Coated by Micro Arc Oxidation Process in Na5P3O10 Solution[J]. Rare Metal Materials and Engineering,2015,44(11):2877~2881.]
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  • 收稿日期:2014-11-20
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  • 在線發(fā)布日期: 2016-07-29
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