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人工晶体学报 ›› 2022, Vol. 51 ›› Issue (1): 148-153.

• 研究论文 • 上一篇    下一篇

近零膨胀Zr0.5Hf0.5V1.4P0.6O7材料的制备及其性能研究

王俊平1, 陈庆东1, 穆文英1, 梁二军2   

  1. 1.滨州学院,山东省航空材料与器件工程技术研究中心,滨州 256603;
    2.郑州大学物理工程学院,材料物理教育部重点实验室,郑州 450052
  • 收稿日期:2021-10-08 出版日期:2022-01-15 发布日期:2022-02-09
  • 通讯作者: 陈庆东,实验师。E-mail:chenqingdong-88@163.com
  • 作者简介:王俊平(1980—),女,山东省人,博士,副教授。E-mail:wangjunping-99@163.com
  • 基金资助:
    国家自然科学基金(U1731121,11874328);滨州学院博士科研启动基金(2021Y11,2016Y04)

Preparation and Properties of the Near Zero Thermal Expansion of Zr0.5Hf0.5V1.4P0.6O7

WANG Junping1, CHEN Qingdong1, MU Wenying1, LIANG Erjun2   

  1. 1. Shandong Engineering Research Center of Aeronautical Materials and Devices, College of Aeronautical Engineering, Binzhou University, Binzhou 256603, China;
    2. Key Laboratory of Materials Physics of Ministry of Education, School of Physical Science and Engineering, Zhengzhou University, Zhengzhou 450052, China
  • Received:2021-10-08 Online:2022-01-15 Published:2022-02-09

摘要: 采用传统的固相法合成了近零膨胀氧化物功能陶瓷材料Zr0.5Hf0.5V1.4P0.6O7,用X射线衍射(XRD)、Raman光谱和热膨胀法对Zr0.5Hf0.5V1.4P0.6O7的热膨胀系数、各向同性和相变进行了测试,通过Hf4+/P5+共掺杂使得材料具有较低的热膨胀系数,研究发现合成的Zr0.5Hf0.5V1.4P0.6O7具有Pa3立方相结构,从334 K附近到673 K较宽的温度范围内的线性热膨胀系数为-1.56×10-6 K-1,表现出稳定的近零热膨胀特性。由于固溶体内部微结构的影响造成膨胀仪实验结果与变温X射线衍射结果存在一定的差距。Zr0.5Hf0.5V1.4P0.6O7具有的近零膨胀特性为通过负热膨胀材料合成膨胀系数可控的材料提供了基础。

关键词: 近零膨胀, Zr0.5Hf0.5V1.4P0.6O7, 相变, 热膨胀系数, 各向同性, 固相法, 拉曼光谱

Abstract: Near zero expansion oxide functional ceramics Zr0.5Hf0.5V1.4P0.6O7 was synthesized by the traditional solid-state method and then the thermal expansion properties of the synthesized samples were explored.X-ray diffraction(XRD), Raman spectra and thermal dilatometry were used to investigate the coefficient of thermal expansion (CTE), isotropy and phase transition of Zr0.5Hf0.5V1.4P0.6O7.Hf4+/P5+ double ion doping results in the material has smaller coefficient of thermal expansion. The investigation results show that the samples are single cubic phase with the space group of Pa3 in the crystal structure. The linear expansion coefficient of Zr0.5Hf0.5V1.4P0.6O7 is calculated to be -1.56×10-6 K-1 in the temperature range from 334 K to 673 K and has near-zero thermal expansion characteristic in a wide temperature range. Due to the influence of the internal microstructure of the solid solution, there is a certain gap between the expansion test results and the X-ray diffraction results at variable temperature. The near zero thermal expansion (NZTE) property of Zr0.5Hf0.5V1.4P0.6O7 provides a basis for the synthesis of materials with controllable expansion coefficient of negative thermal expansion materials.

Key words: near zero thermal expansion, Zr0.5Hf0.5V1.4P0.6O7, phase transition, coefficient of thermal expansion, isotropy, solid-state method, Raman spectrum

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