Promoting crack self-healing of nanocomposite coating by double slip systemic semi-coherent interface dislocation

Zhen Zhang; Bingkun Ning; Weifeng Qian; Shuang Wang; Nan Wang; Yongnan Chen; Yao Li; Qinyang Zhao; Hongzhan Li; Shaopeng Wang; Kepeng Qu

doi:10.1080/21663831.2024.2348661

Materials Research Letters (Jul 2024)

Promoting crack self-healing of nanocomposite coating by double slip systemic semi-coherent interface dislocation

Zhen Zhang,
Bingkun Ning,
Weifeng Qian,
Shuang Wang,
Nan Wang,
Yongnan Chen,
Yao Li,
Qinyang Zhao,
Hongzhan Li,
Shaopeng Wang,
Kepeng Qu

Affiliations

Zhen Zhang: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Bingkun Ning: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Weifeng Qian: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Shuang Wang: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Nan Wang: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Yongnan Chen: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Yao Li: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Qinyang Zhao: School of Materials Science and Engineering, Chang’an University, Xi’an, People’s Republic of China
Hongzhan Li: Northwest Institute for Nonferrous Metal Research, Xi’an, People’s Republic of China
Shaopeng Wang: Northwest Institute for Nonferrous Metal Research, Xi’an, People’s Republic of China
Kepeng Qu: Xi'an Modern Chemistry Research Institute, Xi’an, People’s Republic of China

DOI: https://doi.org/10.1080/21663831.2024.2348661
Journal volume & issue: Vol. 12, no. 7
pp. 467 – 476

Abstract

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A prominent strengthened Y2O3 stabilized t-ZrO2 (YSTZ)/MgO nanocomposite coating is achieved by the plasma electrolytic oxidation (PEO) process and in-situ synthesized YSTZ reinforced phase with a quantitative control approach. The idea of activating double slip systemic semi-coherent interface dislocations in YSTZ/MgO nanocomposite coating to realize crack self-healing is proposed. High dislocation densities are associated with {101} YSTZ slip and {111} MgO slip system to coordinate interfacial deformation to stop crack initiation and propagation. This crack propagation path can absorb more fracture energy, providing more opportunities for crack deflection and bridge, which closes crack and realizes crack self-healing.

Published in Materials Research Letters

ISSN: 2166-3831 (Online)
Publisher: Taylor & Francis Group
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.tandfonline.com/journals/tmrl

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