Catalyst-free in situ synthesis of ZrC nanowires with excellent thermal stability

Ningning Yan; Qiangang Fu; Kun Li; Dou Hu; Wei Xie; Weiyan Wang; Yuyu Zhang; Lei Zhuang; Lei Zhou; Jiaping Zhang; Xiaohong Shi

doi:10.1111/jace.17206

Catalyst-free in situ synthesis of ZrC nanowires with excellent thermal stability

Ningning Yan, Qiangang Fu, Kun Li, Dou Hu, Wei Xie, Weiyan Wang, Yuyu Zhang, Lei Zhuang, Lei Zhou, Jiaping Zhang, Xiaohong Shi

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

No catalyst-assisted zirconium carbide nanowires (ZrCNWs) were successfully synthesized by thermal evaporation and in situ reaction using carbon nanotubes (CNTs) and ZrCl₄ as carbon and zirconium sources. Vapor-Solid (VS) mechanism was proposed to explain the growth process of ZrCNWs. The ZrCNWs prepared at 1400°C have a single crystal structure with the diameters of 130-290 nm. The axial growth direction of ZrCNWs is [111] and the yield is 76.5 wt%. After heat treatment at 1700°C, 2100°C, and 2450°C, the diameter of ZrCNWs increased and their aspect ratio decreased. By simulating the thermal stress of a single ZrCNW, it is speculated that the coarsening and fracture of ZrCNWs are caused by the overall slip of the atomic layers and the stress concentration at the dislocations.

Original language	English
Pages (from-to)	5825-5836
Number of pages	12
Journal	Journal of the American Ceramic Society
Volume	103
Issue number	10
DOIs	https://doi.org/10.1111/jace.17206
State	Published - 1 Sep 2020

Keywords

high temperature stability
residual thermal stress
structural transformation
thermal evaporation
ZrC nanowires

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10.1111/jace.17206

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title = "Catalyst-free in situ synthesis of ZrC nanowires with excellent thermal stability",

abstract = "No catalyst-assisted zirconium carbide nanowires (ZrCNWs) were successfully synthesized by thermal evaporation and in situ reaction using carbon nanotubes (CNTs) and ZrCl4 as carbon and zirconium sources. Vapor-Solid (VS) mechanism was proposed to explain the growth process of ZrCNWs. The ZrCNWs prepared at 1400°C have a single crystal structure with the diameters of 130-290 nm. The axial growth direction of ZrCNWs is [111] and the yield is 76.5 wt%. After heat treatment at 1700°C, 2100°C, and 2450°C, the diameter of ZrCNWs increased and their aspect ratio decreased. By simulating the thermal stress of a single ZrCNW, it is speculated that the coarsening and fracture of ZrCNWs are caused by the overall slip of the atomic layers and the stress concentration at the dislocations.",

keywords = "high temperature stability, residual thermal stress, structural transformation, thermal evaporation, ZrC nanowires",

author = "Ningning Yan and Qiangang Fu and Kun Li and Dou Hu and Wei Xie and Weiyan Wang and Yuyu Zhang and Lei Zhuang and Lei Zhou and Jiaping Zhang and Xiaohong Shi",

note = "Publisher Copyright: {\textcopyright} 2020 American Ceramic Society (ACERS)",

year = "2020",

month = sep,

day = "1",

doi = "10.1111/jace.17206",

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T1 - Catalyst-free in situ synthesis of ZrC nanowires with excellent thermal stability

AU - Yan, Ningning

AU - Fu, Qiangang

AU - Li, Kun

AU - Hu, Dou

AU - Xie, Wei

AU - Wang, Weiyan

AU - Zhang, Yuyu

AU - Zhuang, Lei

AU - Zhou, Lei

AU - Zhang, Jiaping

AU - Shi, Xiaohong

PY - 2020/9/1

Y1 - 2020/9/1

N2 - No catalyst-assisted zirconium carbide nanowires (ZrCNWs) were successfully synthesized by thermal evaporation and in situ reaction using carbon nanotubes (CNTs) and ZrCl4 as carbon and zirconium sources. Vapor-Solid (VS) mechanism was proposed to explain the growth process of ZrCNWs. The ZrCNWs prepared at 1400°C have a single crystal structure with the diameters of 130-290 nm. The axial growth direction of ZrCNWs is [111] and the yield is 76.5 wt%. After heat treatment at 1700°C, 2100°C, and 2450°C, the diameter of ZrCNWs increased and their aspect ratio decreased. By simulating the thermal stress of a single ZrCNW, it is speculated that the coarsening and fracture of ZrCNWs are caused by the overall slip of the atomic layers and the stress concentration at the dislocations.

AB - No catalyst-assisted zirconium carbide nanowires (ZrCNWs) were successfully synthesized by thermal evaporation and in situ reaction using carbon nanotubes (CNTs) and ZrCl4 as carbon and zirconium sources. Vapor-Solid (VS) mechanism was proposed to explain the growth process of ZrCNWs. The ZrCNWs prepared at 1400°C have a single crystal structure with the diameters of 130-290 nm. The axial growth direction of ZrCNWs is [111] and the yield is 76.5 wt%. After heat treatment at 1700°C, 2100°C, and 2450°C, the diameter of ZrCNWs increased and their aspect ratio decreased. By simulating the thermal stress of a single ZrCNW, it is speculated that the coarsening and fracture of ZrCNWs are caused by the overall slip of the atomic layers and the stress concentration at the dislocations.

KW - high temperature stability

KW - residual thermal stress

KW - structural transformation

KW - thermal evaporation

KW - ZrC nanowires

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U2 - 10.1111/jace.17206

DO - 10.1111/jace.17206

M3 - 文章

AN - SCOPUS:85086044602

SN - 0002-7820

VL - 103

SP - 5825

EP - 5836

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 10

ER -

Catalyst-free in situ synthesis of ZrC nanowires with excellent thermal stability

Abstract

Keywords

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