中国物理B ›› 2019, Vol. 28 ›› Issue (4): 46201-046201.doi: 10.1088/1674-1056/28/4/046201

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effects of helium implantation on mechanical properties of (Al0.31Cr0.20Fe0.14Ni0.35)O high entropy oxide films

Zhao-Ming Yang(杨朝明), Kun Zhang(张坤), Nan Qiu(裘南), Hai-Bin Zhang(张海斌), Yuan Wang(汪渊), Jian Chen(陈坚)   

  1. 1 Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;
    2 Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;
    3 Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
  • 收稿日期:2018-12-11 修回日期:2019-02-03 出版日期:2019-04-05 发布日期:2019-04-05
  • 通讯作者: Yuan Wang, Jian Chen E-mail:wyuan@scu.edu.cn;j.chen@seu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11775150 and 11505121).

Effects of helium implantation on mechanical properties of (Al0.31Cr0.20Fe0.14Ni0.35)O high entropy oxide films

Zhao-Ming Yang(杨朝明)1,2, Kun Zhang(张坤)1, Nan Qiu(裘南)1, Hai-Bin Zhang(张海斌)2, Yuan Wang(汪渊)1, Jian Chen(陈坚)3   

  1. 1 Key Laboratory of Radiation Physics and Technology of Ministry of Education, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, China;
    2 Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621900, China;
    3 Jiangsu Key Laboratory of Advanced Metallic Materials, School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
  • Received:2018-12-11 Revised:2019-02-03 Online:2019-04-05 Published:2019-04-05
  • Contact: Yuan Wang, Jian Chen E-mail:wyuan@scu.edu.cn;j.chen@seu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11775150 and 11505121).

摘要:

It is widely accepted that helium (He) bubbles can prevent dislocations from moving and causing hardening and embrittlement of the material. However, He can affect the mechanical properties of materials in various ways. In this work, ultrafine nanocrystal high entropy oxide (HEO) films with He implantation are prepared by using a radio frequency (RF) reactive magnetron sputtering system to investigate the effects of He bubbles located at grain boundary on the mechanical properties of the films. The mechanical properties of the HEO films are investigated systematically via nanoindentation measurements. The results indicate that the grain boundary cavities induced by He implantation can degrade the hardness, the elastic modulus, and the creep resistance of the HEO films. The mechanical properties of the HEO films are sensitive to the interaction between the He bubbles and the dominating defects.

关键词: helium accumulation, grain boundaries, mechanical properties, high-entropy oxides

Abstract:

It is widely accepted that helium (He) bubbles can prevent dislocations from moving and causing hardening and embrittlement of the material. However, He can affect the mechanical properties of materials in various ways. In this work, ultrafine nanocrystal high entropy oxide (HEO) films with He implantation are prepared by using a radio frequency (RF) reactive magnetron sputtering system to investigate the effects of He bubbles located at grain boundary on the mechanical properties of the films. The mechanical properties of the HEO films are investigated systematically via nanoindentation measurements. The results indicate that the grain boundary cavities induced by He implantation can degrade the hardness, the elastic modulus, and the creep resistance of the HEO films. The mechanical properties of the HEO films are sensitive to the interaction between the He bubbles and the dominating defects.

Key words: helium accumulation, grain boundaries, mechanical properties, high-entropy oxides

中图分类号:  (Structural classes of nanoscale systems)

  • 62.23.-c
81.07.-b (Nanoscale materials and structures: fabrication and characterization)