2）、四方相氧化鋯（t-ZrO2）和t-Zr0.82Ce0.18O2組成。隨鈰濃度的增加，膜層厚度逐漸增加。當鈰濃度為9mol%時，陶瓷膜厚度為135.5 μm，結(jié)合力為52.46 N，膜層具有優(yōu)異的阻氫性能，阻氫滲透因子為19。鈰的加入抑制了t-ZrO2向m-ZrO2的相轉(zhuǎn)變，促進了高溫穩(wěn)定t-ZrO2的生成。"/>

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鈰濃度對ZrH1.8 微弧氧化膜層阻氫性能的影響
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1.內(nèi)蒙古工業(yè)大學(xué) 材料科學(xué)與工程學(xué)院，內(nèi)蒙古 呼和浩特 010051;2.內(nèi)蒙古自治區(qū)薄膜與涂層重點實驗室，內(nèi)蒙古 呼和浩特 010051

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Effect of Cerium Content on Hydrogen Resistance of ZrH1.8 MAO Coatings
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Affiliation:

1.School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2.Inner Mongolia Key Laboratory of Thin Film and Coatings Technology, Hohhot 010051, China

Fund Project:

National Natural Science Foundation of China (51964035); Natural Science Foundation of Inner Mongolia Autonomous Region (2019MS05020, 2020LH05017); Science and Technology Major Project of Inner Mongolia Autonomous Region (2018-810)

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    摘要:

    利用微弧氧化技術(shù)在電解液中加入不同含量的鈰，制備了阻氫性能良好的二氧化鈰穩(wěn)定氧化鋯（ceria-stabilized zirconia， CSZ）陶瓷膜。利用涂層測厚儀、涂層附著力自動劃痕儀、掃描電子顯微鏡、X射線能譜儀、X射線衍射儀、X射線光電子能譜儀和真空脫氫實驗對膜層的厚度、結(jié)合力、形貌、相結(jié)構(gòu)、元素化學(xué)價態(tài)和膜層的阻氫性能進行了測試和表征。結(jié)果表明：CSZ陶瓷膜主要由單斜相氧化鋯（m-ZrO2）、四方相氧化鋯（t-ZrO2）和t-Zr0.82Ce0.18O2組成。隨鈰濃度的增加，膜層厚度逐漸增加。當鈰濃度為9mol%時，陶瓷膜厚度為135.5 μm，結(jié)合力為52.46 N，膜層具有優(yōu)異的阻氫性能，阻氫滲透因子為19。鈰的加入抑制了t-ZrO2向m-ZrO2的相轉(zhuǎn)變，促進了高溫穩(wěn)定t-ZrO2的生成。

    Abstract:

    The ceria-stabilized zirconia (CSZ) coating with an excellent hydrogen resistance performance was prepared by micro-arc oxidation (MAO) with cerium addition. The thickness, bonding strength, morphology, phase structure, chemical valence, and hydrogen resistance of ceramic coatings were investigated by coating thickness gauge, auto-scratch tester, scanning electron microscopy, energy dispersive X-ray spectrometer, X-ray diffraction, and X-ray photoelectron spectroscopy, and vacuum dehydrogenation experiment. Results show that CSZ ceramic coatings are mainly composed of monoclinic zirconia (m-ZrO2), tetragonal zirconia (t-ZrO2), and t-Zr0.82Ce0.18O2. With increasing the cerium content, the thickness of coating is increased. When the cerium content is 9mol%, the thickness of CSZ ceramic coating reaches the maximum of 135.5 μm, the bonding force is 52.46 N, and the hydrogen permeation reduction factor (PRF) is 19, which indicates an excellent hydrogen resistance. The cerium addition inhibits the phase transformation from t-ZrO2 to m-ZrO2, thereby promoting the formation of stable t-ZrO2 at elevated temperatures.

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李世江,閆淑芳,陳偉東,馬文.鈰濃度對ZrH1.8 微弧氧化膜層阻氫性能的影響[J].稀有金屬材料與工程,2022,51(3):793~799.[Li Shijiang, Yan Shufang, Chen Weidong, Ma Wen. Effect of Cerium Content on Hydrogen Resistance of ZrH1.8 MAO Coatings[J]. Rare Metal Materials and Engineering,2022,51(3):793~799.]
DOI：10.12442/j. issn.1002-185X.20201000

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  • 收稿日期:2020-12-25
  • 最后修改日期:2021-01-22
  • 錄用日期:2021-02-04
  • 在線發(fā)布日期: 2022-03-30
  • 出版日期: 2022-03-30