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Mo含量對(duì)(VFe)48Ti26Cr26-xMox(0≤x≤5)合金吸放氫性能的影響
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國(guó)家“863”項(xiàng)目（2007AA05Z114）；四川省科技支撐計(jì)劃（07GG002-002）；攀枝花市重點(diǎn)科技項(xiàng)目（2007CY-G-10）


Effect of Mo Content on Hydrogen Absorption and Desorption Properties of (VFe)48Ti26Cr26-xMox (0≤x≤5) Alloys
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    摘要:

    系統(tǒng)研究了(VFe)48Ti26Cr26-xMox(0≤x≤5)合金吸放氫性能及微觀組織結(jié)構(gòu)。XRD及PCT測(cè)試結(jié)果表明，隨著Mo含量增加，合金的晶格常數(shù)增大，放氫平臺(tái)壓升高，吸放氫量在Mo含量0≤x≤2范圍內(nèi)不出現(xiàn)顯著變化，且有效放氫量（質(zhì)量分?jǐn)?shù)）均能保持在2%以上。當(dāng)Mo含量為1 at%時(shí)，合金吸放氫量均達(dá)到最大值，吸氫量為3.59%，放氫量為2.08%，室溫下的放氫平臺(tái)壓為0.337 MPa。SEM與EDS分析表明，不同Mo含量的合金均由bcc主相、Laves相及稀土氧化物相組成，且Mo主要存在于合金的bcc主相中，而在Laves相中分布相對(duì)較少。

    Abstract:

    The microstructure and hydrogen absorption and desorption properties of (VFe)48Ti26Cr26-xMox (0≤x≤5) alloys were investigated. XRD and PCT testing results show that both the lattice constants and plateau pressure increase with the rising of Mo content, and the hydrogen absorption/desorption capacities have no significant change when 0≤x≤2. While the effective desorption capacities maintain more than 2%. When x=1, the alloy shows the maximum hydrogen absorption capacity of 3.59% and the maximum desorption capacity of 2.08%, with a plateau pressure of 0.337 MPa at room temperature. SEM and EDS analyses show that all of the alloys consist of bcc main phase, Laves phase and rare earth oxide phase. Mo mainly distribute in the bcc main phase, and a small amount of Mo exist in the Laves phase.

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楊 菲,吳朝玲,陳云貴,周晶晶,吳海文. Mo含量對(duì)(VFe)48Ti26Cr26-xMox(0≤x≤5)合金吸放氫性能的影響[J].稀有金屬材料與工程,2013,42(2):307~310.[Yang Fei, Wu Chaoling, Chen Yungui, Zhou Jingjing, Wu Haiwen. Effect of Mo Content on Hydrogen Absorption and Desorption Properties of (VFe)48Ti26Cr26-xMox (0≤x≤5) Alloys[J]. Rare Metal Materials and Engineering,2013,42(2):307~310.]
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  • 收稿日期:2012-02-19
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