The ternary system Na2O-ZnO-WO3:: Compounds and phase relationships

被引：7
|
作者：
Yan, Fengbo [1 ]
Chen, Dagui [1 ]
Li, Wei [1 ]
Lin, Zhang [1 ]
Zhao, Zhenguo [1 ]
Xue, Liping [1 ]
Huang, Feng [1 ]
Liang, Jingkui [1 ,2 ,3 ,4 ]
机构：
[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China
[3] Chinese Acad Sci, Ctr Condensed Matter Phys, Beijing 100080, Peoples R China
[4] Chinese Acad Sinica, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 458卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
ZnO-Na2O-WO3; system; X-ray diffraction; phase relation; DTA; Na3.6Zn1.2(WO4)(3);
D O I：
10.1016/j.jallcom.2007.04.024
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The subsolidus phase relationships of ternary system Na2O-ZnO-WO3 have been investigated by X-ray diffraction (XRD) and differential thermal analyzer (DTA). All the samples were synthesized in the temperature range from 530 to 850 degrees C in air. There are one ternary compound and five binary compounds in the Na2O-ZnO-WO3 System, which can be divided into eight three-phase regions. The crystal structure of the ternary compound Na3.6Zn1.2(WO4)(3) is determined by single-crystal structure analysis method. It belongs to triclinic system with space group P1 and lattice constants a = 7.237 (5) angstrom, b = 9.172 (6) angstrom, c = 9.339 (6) angstrom and alpha = 94.920 (4)degrees, beta = 105.772 (9)degrees, gamma = 103.531 (8)degrees, Z = 2. DTA analyses indicate that the compound Na2WO4 is not suitable to be the flux for ZnO crystal growth below 1250 degrees C, since no liquidus was observed in the system before 1250 degrees C. (c) 2007 Published by Elsevier B.V.
引用
收藏
页码：138 / 143
页数：6
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