Volume change in Zr50Cu40Al10 glassy alloys
Volume change in Zr50Cu40Al10 glassy alloys
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DOI：
10.1016/j.jallcom.2006.08.320
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发表时间：
2007-05
影响因子：
6.2
通讯作者：
Y. Yokoyama;T. Yamasaki;P. Liaw;R. Buchanan;A. Inoue
中科院分区：
文献类型：
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作者：
Y. Yokoyama;T. Yamasaki;P. Liaw;R. Buchanan;A. Inoue
研究了四元系Zr47Cu40Al10M3(M：IVA∼Via)、Zr50Cu37Al10M3(M：VIIa∼IB)和Zr50Cu40Al7M3(M：IIB∼)大块玻璃合金(BGA)的玻璃结构。通过玻璃化转变温度(Tg)处结构松弛引起的体积变化来评价玻璃结构的差异；用密度测量来估计体积收缩。结果表明，以填充d壳层电子结构为特征的Pd、Ag、Pt和Au对提高玻璃结构的体积膨胀是有效的。此外，四元系Zr-Cu-Al-M BGAS的体积变化可分为两组。这意味着，在玻璃结构方面，Zr50Cu37Al10M3(M=Pd，Ag，Pt，Au)BGA与本研究中所研究的其他材料有所不同。
Quaternary Zr47Cu40Al10M3(M: IVA∼VIA), Zr50Cu37Al10M3(M: VIIA∼IB), and Zr50Cu40Al7M3(M: IIB∼) bulk glass alloys (BGAs) were examined to clarify the glassy structure of Zr50Cu40Al10BGA. The glass structural difference was evaluated by the volume change due to structural relaxation at the glass-transition temperature (Tg); the volume shrinkage was estimated using density measurement. The results indicated that Pd, Ag, Pt, and Au, which are characterized by a filled d-shell electron structure, are effective for enhancing volume expansion in a glass structure. Furthermore, the volume changes in quaternary Zr–Cu–Al–M BGAs could be classified into two groups. This implies a difference in glass structure between the Zr50Cu37Al10M3(M=Pd, Ag, Pt, and Au) BGA and others examined in this study.