Control of self-powdering phenomenon in ferroelastic β′-Gd2(MoO4)3 crystallization in boro-tellurite glasses
Control of self-powdering phenomenon in ferroelastic β′-Gd2(MoO4)3 crystallization in boro-tellurite glasses
复制标题
硼亚碲酸盐玻璃中铁弹性β-Gd2(MoO4)3结晶自粉化现象的控制
DOI：
10.1016/j.jnoncrysol.2017.12.006
复制
发表时间：
2018
影响因子：
3.5
通讯作者：
Müller, Ralf
中科院分区：
文献类型：
--
作者：
Kotaka, Mikiya;Honma, Tsuyoshi;Komatsu, Takayuki;Shinozaki, Kenji;Affatigato, Mario;Müller, Ralf
采用常规熔融淬火技术制备了组成为 21Gd2O3-63MoO3-(16-x)B2O3-xTeO2(mol%) (x = 0, 2, 4, 8) 的玻璃，并研究了铁弹性 β'-Gd2(MoO4)3 晶体的结晶行为，以阐明自粉化现象的机理并设计块状结晶。 眼镜。研究发现，在结晶峰值温度附近的结晶过程中，自粉化现象明显出现，但在远高于玻璃化转变温度的温度下，该现象受到抑制。研究还发现，用 TeO2 代替 B2O3 可以抑制基体玻璃的自粉化现象，从而在 x = 8 mol% 的玻璃中获得块状结晶玻璃。基体玻璃在室温下的密度为 d= 4.755–4.906 g/cm3，远高于 β'-Gd2(MoO4)3 晶体的 d= 4.555 g/cm3 值。提出在含有TeO2 的弱单键O键和脆性的玻璃中，由玻璃相和晶体之间大的密度差（即大的摩尔体积差）引起的晶体内部的应力可以有效地得到松弛。
Glasses with compositions of 21Gd2O3-63MoO3-(16-x)B2O3-xTeO2(mol%) (x = 0, 2, 4, 8) were prepared using a conventional melt quenching technique, and the crystallization behavior of ferroelastic β′-Gd2(MoO4)3crystals was examined to clarify the mechanism of self-powdering phenomenon and to design bulk crystallized glasses. It was found that the self-powdering phenomenon appeared significantly during the crystallization at temperatures near the crystallization peak temperature, but the phenomenon is suppressed in the crystallization at temperatures much higher than the glass transition temperature. It was also found that the substitution of TeO2for B2O3in the base glasses suppresses the self-powdering phenomenon and consequently bulk crystallized glasses were obtained in the glass with x = 8 mol%. The densities at room temperature of the base glasses ared= 4.755–4.906 g/cm3, being much higher than the value ofd= 4.555 g/cm3for β′-Gd2(MoO4)3crystal. It is proposed that the stresses in the inside of crystals induced by large density differences (i.e., large molar volume differences) between the glassy phase and crystals might be relaxed effectively in the glasses containing TeO2with weak Tesingle bondO bonds and fragile character.
登录
查看更多内容
影响因子：
4
作者：
Futoshi Suzuki;T. Honma;T. Komatsu
通讯作者：
Futoshi Suzuki;T. Honma;T. Komatsu
斜方非中心 Gd2(MoO4)3 晶体在整个可见光范围内产生飞秒连续可调二次谐波
DOI：
--
发表时间：
1997
期刊：
影响因子：
--
作者：
H. Nishioka;W. Odajima;M. Tateno;K. Ueda;A. Kaminskii;A. Butashin;S. Bagayev;A. A. Pavlyuk
通讯作者：
A. A. Pavlyuk
TeO2 B2O3 系统的热和微观结构表征以及结晶动力学研究
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
D. Yardimci;M. Çelikbilek;A. Ersundu;S. Aydin
通讯作者：
S. Aydin
玻璃表面铁弹β-(Sm, Gd)_2(MoO_4)_3晶线二次谐波产生的自组织周期畴结构
DOI：
--
发表时间：
2009
期刊：
Applied Physics Letters Vol.94
影响因子：
--
作者：
Y.Tsukada;T.Honma;T.Komatsu
通讯作者：
T.Komatsu
硼酸盐体系玻璃形成范围的研究
DOI：
--
发表时间：
1961
期刊：
影响因子：
--
作者：
M. Imaoka
通讯作者：
M. Imaoka