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人工晶体学报 ›› 2024, Vol. 53 ›› Issue (5): 899-903.

• 研究论文 • 上一篇    下一篇

(ZrCa)xY2-2xW3O12固溶体吸水性及热膨胀性能研究

王献立, 付林杰, 于占军, 陈冬霞, 段向阳   

  1. 郑州航空工业管理学院材料学院,郑州 450046
  • 收稿日期:2023-12-05 出版日期:2024-05-15 发布日期:2024-05-21
  • 通信作者: 陈冬霞,博士,副教授。E-mail:chendx1982@163.com
  • 作者简介:王献立(1986—),男,河南省人,助理实验师。E-mail:wx8115@163.com
  • 基金资助:
    河南省自然科学基金(222300420578);河南省高等学校重点科研项目(23B140004);河南省高校科技创新团队支持计划(22IRTSTHN004)

Hygroscopicity and Thermal Expansion Properties of (ZrCa)xY2-2xW3O12 Solid Solution

WANG Xianli, FU Linjie, YU Zhanjun, CHEN Dongxia, DUAN Xiangyang   

  1. School of Materials Science and Engineering, Zhengzhou University of Aeronautics, Zhengzhou 450046, China
  • Received:2023-12-05 Online:2024-05-15 Published:2024-05-21

摘要: 采用固相烧结法制备出(ZrCa)xY2-2xW3O12(x=0、0.1、0.2、0.3、0.4、0.5、0.6、0.7、0.8、0.9和1.0)固溶体,并利用XRD、拉曼光谱、热分析及热膨胀仪对材料的结构、吸水性及热膨胀性进行研究。结果表明,随着(ZrCa)6+含量的增加,固溶体的吸水性明显降低,结晶水释放后,该系列固溶体的热膨胀系数呈规律性变化。当x=0.6时,(ZrCa)0.6Y0.8W3O12为近零膨胀,且其线性热膨胀系数al为2.79×10-7 K-1(453~1 000 K)。

关键词: 固溶体, 负热膨胀, (ZrCa)xY2-2xW3O12, 吸水性, 拉曼光谱

Abstract: (ZrCa)xY2-2xW3O12(x =0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9 and 1.0) are developed with a simple solid state method, and characterized for crystal structure, hygroscopicity and thermal expansion by X-ray diffraction, Raman spectroscopy, thermal analysis and dilatometer. The results show that the hygrosopicity of solid solution decreases obviously, and the coefficient of thermal expansion (CTE) changes regularly after complete release of the crystal water with the increase of (ZrCa)6+ content. A near-zero thermal expansion (ZTE) is realized for (ZrCa)0.6Y0.8W3O12 as x=0.6, and the linear CTE (al) is measured to be 2.79×10-7 K-1(453~1 000 K).

Key words: solid solution, negative thermal expansion, (ZrCa)xY2-2xW3O12, hygrosopicity, Raman spectroscopy

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