金属热处理 ›› 2025, Vol. 50 ›› Issue (7): 159-163.DOI: 10.13251/j.issn.0254-6051.2025.07.022

• 材料研究 • 上一篇    下一篇

连续固溶体(Nb,Ti)Zn3的晶体结构、硬度与耐腐蚀性

李聪, 李家丰, 林志宏, 龙朝辉   

  1. 湘潭大学 材料科学与工程学院, 湖南 湘潭 411105
  • 收稿日期:2025-02-24 修回日期:2025-05-21 出版日期:2025-07-25 发布日期:2025-07-28
  • 通讯作者: 龙朝辉,副教授,博士,E-mail:zhlong@xtu.edu.cn
  • 作者简介:李聪(1987—),女,高级实验师,硕士,主要研究方向为金属材料,E-mail:licong@xtu.edu.cn。
  • 基金资助:
    广东省电子功能材料与器件重点实验室开放基金(EFMD2021007M);湖南省教育厅一般项目(22C0075);教育部协同育人项目(220904832270216)

Crystal structure, hardness and corrosion resistance of continuous solid solution (Nb,Ti)Zn3

Li Cong, Li Jiafeng, Lin Zhihong, Long Zhaohui   

  1. School of Materials Science and Engineering, Xiangtan University, Xiangtan Hunan 411105, China
  • Received:2025-02-24 Revised:2025-05-21 Online:2025-07-25 Published:2025-07-28

摘要: 为研究连续固溶体(Nb, Ti)Zn3在450 ℃退火后的晶体结构、硬度与耐腐蚀性能,利用铌粉、钛粉和锌块制备了NbxTi25-xZn75 (x=12.5,17)合金。结果表明,NbxTi25-xZn75合金在450 ℃退火65天至均匀化后,物相组成为NbZn3或TiZn3,获得了(Nb, Ti)Zn3单相,Jade软件计算得到两合金样品中(Nb, Ti)Zn3相的晶格常数均约为0.3933 nm。Nb12.5Ti12.5Zn75合金经450 ℃退火4~64 h后,随退火时间的延长,其硬度和耐腐蚀性均先增大后减小;退火16 h时,硬度达到峰值385 HV0.1,耐腐蚀性最佳。

关键词: 连续固溶体(Nb,Ti)Zn3, 晶体结构, 硬度, 耐腐蚀性

Abstract: In order to systematically study the crystal structure, hardness and corrosion resistance of continuous solid solution (Nb, Ti) Zn3 after annealing at 450 ℃, NbxTi25-xZn75 (x=12.5, 17) alloys were prepared by using niobium powder, titanium powder and zinc blocks. The result show that after annealing at 450 ℃ for 65 d until homogenization, the phase component of the NbxTi25-xZn75 alloys is NbZn3 or TiZn3, and (Nb, Ti) Zn3 single-phase is obtained. The lattice constants of (Nb, Ti) Zn3 in the alloys are both approximately 0.3933 nm through Jade software calculation. After annealing at 450 ℃ for 4-64 h, the hardness and corrosion resistance of the Nb12.5Ti12.5Zn75 alloy first increase and then decrease with the extension of annealing time. When annealed for 16 h, the hardness reaches a peak value of 385 HV0.1 and the corrosion resistance is optimal.

Key words: continuous solid solution (Nb,Ti)Zn3, crystal structure, hardness, corrosion resistance

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