中国物理B ›› 2023, Vol. 32 ›› Issue (4): 48201-048201.doi: 10.1088/1674-1056/ac9364

• • 上一篇    下一篇

Tailoring of thermal expansion and phase transition temperature of ZrW2O8 with phosphorus and enhancement of negative thermal expansion of ZrW1.5P0.5O7.75

Chenjun Zhang(张晨骏)1,2, Xiaoke He(何小可)3,†, Zhiyu Min(闵志宇)1,2,‡, and Baozhong Li(李保忠)4   

  1. 1 School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China;
    2 Luoyang Institute of Science and Technology, Luoyang 471023, China;
    3 North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
    4 Luoyang Smart Agricultural Equipment Institute Co., Ltd., Luoyang 471023, China
  • 收稿日期:2022-06-28 修回日期:2022-09-02 接受日期:2022-09-21 出版日期:2023-03-10 发布日期:2023-03-17
  • 通讯作者: Xiaoke He, Zhiyu Min E-mail:hexiaoke@ncwu.edu.cn;200900300185@lit.edu.cn
  • 基金资助:
    Project supported by the Key Scientific and Technological Research Projects of Henan Province, China (Grant Nos. 222102220021 and 222102220056).

Tailoring of thermal expansion and phase transition temperature of ZrW2O8 with phosphorus and enhancement of negative thermal expansion of ZrW1.5P0.5O7.75

Chenjun Zhang(张晨骏)1,2, Xiaoke He(何小可)3,†, Zhiyu Min(闵志宇)1,2,‡, and Baozhong Li(李保忠)4   

  1. 1 School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China;
    2 Luoyang Institute of Science and Technology, Luoyang 471023, China;
    3 North China University of Water Resources and Electric Power, Zhengzhou 450045, China;
    4 Luoyang Smart Agricultural Equipment Institute Co., Ltd., Luoyang 471023, China
  • Received:2022-06-28 Revised:2022-09-02 Accepted:2022-09-21 Online:2023-03-10 Published:2023-03-17
  • Contact: Xiaoke He, Zhiyu Min E-mail:hexiaoke@ncwu.edu.cn;200900300185@lit.edu.cn
  • Supported by:
    Project supported by the Key Scientific and Technological Research Projects of Henan Province, China (Grant Nos. 222102220021 and 222102220056).

RichHTML

1

PDF (PC)

59

赞

摘要： ZrW$_{2}$O$_{8}$ is a typical isotropic negative thermal expansion material with cubic structure. However, quenching preparation, pressure phase transition and metastable structure influence its practical applications. Adopting P to part-substitute W for ZrW$_{2-x}$P$_{x}$O$_{8-0.5x}$ has decreased the sintering temperature and avoided the quenching process. When $x=0.1$, ZrW$_{1.9}$P$_{0.1}$O$_{7.95}$ with a stable cubic structure can be obtained at 1150 $^\circ$C. The thermal expansion coefficient is tailored with the P content, and phase transition temperature is lowered. When $x=0.5$, thermal expansion coefficient attains $-13.6\times10^{-6}$ $^{\circ}$C$^{-1}$, ZrW$_{1.5}$P$_{0.5}$O$_{7.75}$ exhibits enhance negative thermal expansion property. The difference of electronegativity leads to the decrease of phase transition temperature with the increase of P content. The different radii of ions lead to new structure of materials when P substitutes more. The results suggest that the P atom plays the stabilization role in the crystal structure of ZrW$_{2-x}$P$_{x}$O$_{8-0.5x}$.

关键词: tailored thermal expansion, phase transition, negative thermal expansion, stabilization role, XRD

Abstract: ZrW$_{2}$O$_{8}$ is a typical isotropic negative thermal expansion material with cubic structure. However, quenching preparation, pressure phase transition and metastable structure influence its practical applications. Adopting P to part-substitute W for ZrW$_{2-x}$P$_{x}$O$_{8-0.5x}$ has decreased the sintering temperature and avoided the quenching process. When $x=0.1$, ZrW$_{1.9}$P$_{0.1}$O$_{7.95}$ with a stable cubic structure can be obtained at 1150 $^\circ$C. The thermal expansion coefficient is tailored with the P content, and phase transition temperature is lowered. When $x=0.5$, thermal expansion coefficient attains $-13.6\times10^{-6}$ $^{\circ}$C$^{-1}$, ZrW$_{1.5}$P$_{0.5}$O$_{7.75}$ exhibits enhance negative thermal expansion property. The difference of electronegativity leads to the decrease of phase transition temperature with the increase of P content. The different radii of ions lead to new structure of materials when P substitutes more. The results suggest that the P atom plays the stabilization role in the crystal structure of ZrW$_{2-x}$P$_{x}$O$_{8-0.5x}$.

Key words: tailored thermal expansion, phase transition, negative thermal expansion, stabilization role, XRD

中图分类号:  (Lithium-ion batteries)

  • 82.47.Aa
79.60.Jv (Interfaces; heterostructures; nanostructures) 65.40.gk (Electrochemical properties)