3)La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF)透氧膜。利用氧程序升溫脫附(O2-TPD)、XPS等手段,比較了兩種膜在200-900℃間氧物種在表面及體相中的傳遞變化情況。O2-TPD結(jié)果顯示：SAPS膜的物理吸附氧脫附量、化學(xué)吸附氧脫附量和晶格氧脫附量分別超過PS-PVD膜的2倍、3倍和6倍；而XPS結(jié)果顯示：SAPS膜表面吸附氧與晶格氧O1s峰面積比也高于PS-PVD膜。以上結(jié)果表明SAPS膜對(duì)氧具有更好的吸附及解離能力、更多的本征氧空位及更高的空位生成能力。"/>

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等離子噴涂致密La0.6Sr0.4Co0.2Fe0.8O3-δ透氧膜氧傳輸行為的研究
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1.華南理工大學(xué)材料科學(xué)與工程學(xué)院;2.廣東省新材料研究所

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廣州市基金資助（201707010455）


Study on the oxygen transportation behavior of dense La0.6Sr0.4Co0.2Fe0.8O3-δ oxygen transport membrane prepared by plasma spraying technology
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1.School of Materials Science and Engineering,South China University of Technology,Guangzhou ,China;2.Guangdong Institute of New Materials,National Engineering Laboratory for Modern Materials Surface Engineering Technology,The Key Lab of Guangdong for Modern Surface Engineering Technology,Guangzhou ,China

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    摘要:

    本文采用超音速等離子噴涂(SAPS)和等離子物理氣相沉積方法(PS-PVD)制備了結(jié)構(gòu)致密的鈣鈦礦型(ABO3)La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF)透氧膜。利用氧程序升溫脫附(O2-TPD)、XPS等手段,比較了兩種膜在200-900℃間氧物種在表面及體相中的傳遞變化情況。O2-TPD結(jié)果顯示：SAPS膜的物理吸附氧脫附量、化學(xué)吸附氧脫附量和晶格氧脫附量分別超過PS-PVD膜的2倍、3倍和6倍；而XPS結(jié)果顯示：SAPS膜表面吸附氧與晶格氧O1s峰面積比也高于PS-PVD膜。以上結(jié)果表明SAPS膜對(duì)氧具有更好的吸附及解離能力、更多的本征氧空位及更高的空位生成能力。

    Abstract:

    Gas-tight perovskite La0.6Sr0.4Co0.2Fe0.8O3-δ(LSCF)oxygen transport membranes were prepared by supersonic air-gas plasma spraying (SAPS) and low pressure plasma spraying-physical vapor deposition (PS-PVD). Surface exchange and bulk diffusion of the oxygen species of the two membranes were compared by the use of O2-TPD and XPS. The O2-TPD result shows the desorptions of the physical, chemical adsorbed oxygen and the lattic oxygen of the SAPS membrane were 2, 3 and 6 times respectively more than those of the PS-PVD membrane. The XPS result also shows a higher proportion of adsorbed oxygen of the SAPS membrane than that of the PS-PVD membrane. All the above results demonstrate that the SAPS membrane should has better adsorption and dissocation abilities on oxygen, and should also possesses more intrinsic oxygen vacancies and higher capacity of vancancy formation.

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牛少鵬,周克崧,徐麗萍,鄧暢光,毛杰,曾威.等離子噴涂致密La0.6Sr0.4Co0.2Fe0.8O3-δ透氧膜氧傳輸行為的研究[J].稀有金屬材料與工程,2018,47(12):3697~3702.[Niu Shaopeng, Zhou Kesong, Xu Liping, Deng Changguang, Mao Jie, Zeng Wei. Study on the oxygen transportation behavior of dense La0.6Sr0.4Co0.2Fe0.8O3-δ oxygen transport membrane prepared by plasma spraying technology[J]. Rare Metal Materials and Engineering,2018,47(12):3697~3702.]
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  • 收稿日期:2017-02-16
  • 最后修改日期:2017-05-07
  • 錄用日期:2017-06-26
  • 在線發(fā)布日期: 2019-01-04
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