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（V30Ti35Cr25Fe10）97．5Si2．5合金的結(jié)構(gòu)與吸放氫性能
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TG146.4

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攀枝花科技局重點(diǎn)攻關(guān)項(xiàng)目（GX2003-1）


Structure and Hydrogen Absorption and Desorption Properties of (V30Ti35Cr25Fe10)97.5Si2.5 Alloy
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    摘要:

    采用XRD，SEM和PCT測(cè)試研究了（V30Ti35Cr25Fe10）97.5Si2.5（at％）合金的組織結(jié)構(gòu)與吸放氫性能。結(jié)果表明：合金由BCC相和C14 Laves相組成，BCC相含量為75％，晶胞參數(shù)為α=0．3021nm，Laves相含量為25％，晶胞參數(shù)為α=0．4920nm和c=0．7996nm。由于含有大量的Laves相，合金具有良好的活化性能，室溫下不需孕育期就可以快速吸氫，5min內(nèi)達(dá)到吸氫飽和狀態(tài)，飽和吸氫量達(dá)到2．98％（質(zhì)量分?jǐn)?shù)，下同）。在一定氫壓下，合金的容量可由合金中BCC相和Laves相的容量按組分的含量進(jìn)行線性組合而成。

    Abstract:

    The microstructure and hydrogen absorption and desorption properties of (V30Ti35Cr25Fe10)97.5Si2.5 alloy consisting of 75% BCC phase and 25% C14 Laves phase were investigated by X-ray, SEM and PCT measurement in this paper. The lattice parameters of BCC phase and Laves phase are 0.3021 nm (a), as well as 0.4920 nm (a) and 0.7996 nm (c), respectively. The alloy shows a good activation performance with a saturated hydrogen absorption amount up to 2.98 wt% within 5 min, and reacts with hydrogen immediately at room temperature duo to the large amount of Laves phase. The capacity of (V30Ti35Cr25Fe10)97.5Si2.5 at a given pressure agrees with the one calculated by the linear combination of its constituent phase.

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嚴(yán)義剛 陳云貴 周瀟瀟 梁浩.（V30Ti35Cr25Fe10）97．5Si2．5合金的結(jié)構(gòu)與吸放氫性能[J].稀有金屬材料與工程,2007,36(5):799~802.[Yan Yigang, Chen Yungui, Zhou Xiaoxiao, Liang Hao. Structure and Hydrogen Absorption and Desorption Properties of (V30Ti35Cr25Fe10)97.5Si2.5 Alloy[J]. Rare Metal Materials and Engineering,2007,36(5):799~802.]
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  • 最后修改日期:2006-03-10
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