40Ti26Cr26Fe8合金的貯氫能力隨著氮、氧雜質(zhì)含量的增加而明顯降低,主要作用機(jī)理如下:氧在V基合金中的溶解抑制了二氫化物相的形成,導(dǎo)致氫容量的降低(主要效應(yīng)),而氮與鈦結(jié)合形成了新的富氮鈦相,導(dǎo)致了主相成分的變化和晶格參數(shù)的減?。ǘ涡?yīng))。"/>

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氮、氧雜質(zhì)對V40Ti26Cr26Fe8 合金化學(xué)成分、微觀組織和貯氫性能的影響
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作者單位:

1.四川大學(xué) 材料科學(xué)與工程學(xué)院,四川 成都 610064;2.四川大學(xué) 新能源與低碳技術(shù)研究院,四川 成都 610065;3.后續(xù)能源材料與器件教育部工程研究中心,四川 成都 610064

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基金項目:

四川省國際科技創(chuàng)新合作/港澳臺科技創(chuàng)新合作項目


Effect of Nitrogen and Oxygen Impurities on Chemical Composition, Microstructure, and Hydrogen Storage Performance of V40Ti26Cr26Fe8 Alloy
Author:
Affiliation:

1.College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China;2.Institute of New-Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China;3.Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu 610064, China

Fund Project:

International/Hongkong, Macao & Taiwan Scientific and Technological Innovation Cooperation Project (2019YFH0148)

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    摘要:

    采用X射線衍射、掃描電子顯微鏡、光學(xué)顯微鏡和壓力-成分-溫度(PCT)等手段研究了氮、氧雜質(zhì)對V-Ti-Cr-Fe合金微區(qū)化學(xué)成分、微觀結(jié)構(gòu)和貯氫能力的協(xié)同影響。V40Ti26Cr26Fe8合金的貯氫能力隨著氮、氧雜質(zhì)含量的增加而明顯降低,主要作用機(jī)理如下:氧在V基合金中的溶解抑制了二氫化物相的形成,導(dǎo)致氫容量的降低(主要效應(yīng)),而氮與鈦結(jié)合形成了新的富氮鈦相,導(dǎo)致了主相成分的變化和晶格參數(shù)的減?。ǘ涡?yīng))。

    Abstract:

    The synergetic effects of nitrogen and oxygen impurities on the micro-area chemical composition, microstructure, and hydrogen storage performance of V-Ti-Cr-Fe alloys were investigated through X-ray diffraction, scanning electron microscopy, optical microscopy, and pressure-composition-temperature (PCT) analyses. Results show that the hydrogen storage capacity of V40Ti26Cr26Fe8 alloy is obviously decreased with increasing the nitrogen and oxygen impurities. The mechanism for the decrease is as follows: the oxygen dissolved in V-based alloys suppresses the formation of the dihydride phase, resulting in the decrease in hydrogen capacity (primary effect); while the nitrogen is bound with titanium forming a new nitrogen-titanium-enriched phase, which results in composition change of the main phase and decreases the lattice parameter (secondary effect).

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朱鵬飛,王倩,吳朝玲.氮、氧雜質(zhì)對V40Ti26Cr26Fe8 合金化學(xué)成分、微觀組織和貯氫性能的影響[J].稀有金屬材料與工程,2022,51(5):1582~1588.[PengFei Zhu, Qian Wang, ChaoLing Wu. Effect of Nitrogen and Oxygen Impurities on Chemical Composition, Microstructure, and Hydrogen Storage Performance of V40Ti26Cr26Fe8 Alloy[J]. Rare Metal Materials and Engineering,2022,51(5):1582~1588.]
DOI:10.12442/j. issn.1002-185X.20210215

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  • 收稿日期:2021-03-15
  • 最后修改日期:2021-05-11
  • 錄用日期:2021-05-25
  • 在線發(fā)布日期: 2022-05-31
  • 出版日期: 2022-05-30