Preparation of NZP-Type Ca0.75+0.5xZr1.5Fe0.5(PO4)3-x(SiO4)x Powders and Ceramic, Thermal Expansion Behavior

被引：7
|
作者：
Savinykh, D. O. [1 ]
Khainakov, S. A. [2 ]
Boldin, M. S. [1 ]
Orlova, A. I. [1 ]
Aleksandrov, A. A. [1 ]
Lantsev, E. A. [1 ]
Sakharov, N. V. [1 ]
Murashov, A. A. [1 ]
Garcia-Granda, S. [2 ]
Nokhrin, A. V. [1 ]
Chuvil'deev, V. N. [1 ]
机构：
[1] Lobachevsky State Univ, Pr Gagarina 23, Nizhnii Novgorod 603950, Russia
[2] Univ Oviedo, Calle San Francisco 1, Oviedo 33003, Spain
来源：
INORGANIC MATERIALS | 2018年 / 54卷 / 12期
基金：
俄罗斯科学基金会;
关键词：
NZP; phosphatosilicate; sol-gel process; X-ray diffraction; solid solution; thermal expansion; SPS; NAZR2(PO4)(3) STRUCTURE; PHOSPHATES; CALCIUM; FAMILY; NA;
D O I：
10.1134/S0020168518120154
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ca0.75 + 0.5xZr1.5Fe0.5(PO4)(3 -x)(SiO4)(x) (x = 0-0.5) solid solutions have been synthesized by a sol-gel process and characterized by X-ray diffraction, IR spectroscopy, and differential scanning calorimetry. As expected, the synthesized phosphatosilicates crystallize in a NaZr2(PO4)(3)-type structure (trigonal symmetry, sp. gr. Rc). The thermal expansion of the solid solutions has been studied by high-temperature X-ray diffraction in the temperature range from 25 to 800 degrees C. Their thermal expansion parameters have been calculated and analyzed as functions of composition. High-density ceramics based on the Ca0.875Zr1.5Fe0.5(PO4)(2.75)(SiO4)(0.25) phosphatosilicate have been produced by spark plasma sintering and their structure and properties have been studied in detail.
引用
收藏
页码：1267 / 1273
页数：7
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