Effects of soluble Cr2O3 doping on the glass structure, microstructure, crystallization behavior, and properties of MgO–Al2O3–SiO2 sapphirine glass ceramics
Effects of soluble Cr2O3 doping on the glass structure, microstructure, crystallization behavior, and properties of MgO–Al2O3–SiO2 sapphirine glass ceramics
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可溶性Cr2O3掺杂对MgO·Al2O3·SiO2蓝宝石玻璃陶瓷玻璃结构、显微结构、结晶行为及性能的影响
DOI：
10.1016/j.matchemphys.2020.123115
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发表时间：
2020-09
影响因子：
4.6
通讯作者：
Zhenmin Qu
中科院分区：
文献类型：
--
作者：
Shuai Zhang;Yanling Zhang;Zhenmin Qu
蓝宝石玻璃陶瓷是用少量的 Cr2O3 合成的。研究了玻璃的结构、晶相转变、晶体生长行为和物理化学性质。我们的结果表明，在Cr2O3的添加过程中，母体玻璃中Q3Si和Q4Al的含量逐渐减少，而Q2Si、Q1Si和Q3Al的含量增加。随着Cr2O3的添加，母体玻璃的结晶放热温度降低，所得玻璃陶瓷的主晶相由α-堇青石转变为蓝宝石。在 Cr0 样品中，α-堇青石的方形堇青石晶体在玻璃基体中生长。 Cr2O3 掺杂样品出现孔状 (sapphirine-1A) 和针状 (sapphirine-2M) 晶体形态。研究发现 Cr2O3 的添加可以促进蓝宝石相的晶粒细化。以蓝宝石为主晶相的Cr0.5和Cr0.8样品可作为中等热膨胀材料，具有一定的强度和耐化学性能。综上所述，含铬固废可作为原料制备具有一定强度、耐化学性能和热膨胀系数的蓝宝石微晶玻璃。
Sapphirine glass ceramics were synthetized using small quantities of Cr2O3. The structure of the glass, transformation of the crystal phases, crystal growth behavior and physicochemical properties were investigated. Our results indicate that the content of Q3Si and Q4Al gradually decreased, while the content of Q2Si, Q1Si, and Q3Al increased within the parent glass during the addition of Cr2O3. The crystallization exothermic temperature of the parent glass decreased with addition of Cr2O3 and the main crystal phase of the resulting glass ceramic changed from α-cordierite to sapphirine. In Cr0 samples, square cordierite crystals of α-cordierite grew in the glass matrix. With Cr2O3 doped samples, pore-like (sapphirine-1A) and needle-like (sapphirine-2M) crystallographic morphology appeared. The addition of Cr2O3 was found to promote grain refinement of the sapphirine phase. Cr0.5 and Cr0.8 samples – with sapphirine as main crystal phase – can be used as medium thermal expansion material with a certain extent of strength and chemical resistance.In conclusion, the solid waste containing chromium can be used as raw material to prepare the sapphirine glass ceramics with a certain extent of strength, chemical resistance and thermal expansion coefficient.
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影响因子：
5.2
作者：
Chengyun Wang;H. Jia;Aiping Wang;Xin Wang;Yanling Guo;Jieyu Zhang
通讯作者：
Chengyun Wang;H. Jia;Aiping Wang;Xin Wang;Yanling Guo;Jieyu Zhang
影响因子：
5.7
作者：
J. M. Benito;X. Turrillas;G. Cuello;A. H. Aza;S. Aza;M. A. Rodríguez
通讯作者：
J. M. Benito;X. Turrillas;G. Cuello;A. H. Aza;S. Aza;M. A. Rodríguez
影响因子：
1.8
作者：
Qiuhan Li;Shu-feng Yang;Yan-ling Zhang;Zhuoqing An;Zhancheng Guo
通讯作者：
Qiuhan Li;Shu-feng Yang;Yan-ling Zhang;Zhuoqing An;Zhancheng Guo
影响因子：
5.2
作者：
O. Al-Harbi
通讯作者：
O. Al-Harbi
影响因子：
5.7
作者：
V. Marghussian;U. Balazadegan;B. Eftekhari-yekta
通讯作者：
V. Marghussian;U. Balazadegan;B. Eftekhari-yekta