Active brazing of high entropy ceramic and Nb metal: Interfacial microstructure and brazing mechanism

Pengcheng Wang; Zhiquan Xu; Bin Qin; Jinghuang Lin; Jian Cao; Jicai Feng; Junlei Qi

doi:10.1016/j.vacuum.2022.111464

Active brazing of high entropy ceramic and Nb metal: Interfacial microstructure and brazing mechanism

Pengcheng Wang
, Zhiquan Xu
, Bin Qin
, Jinghuang Lin^*
, Jian Cao
, Jicai Feng
, Junlei Qi

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
The University of Tokyo

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

21 Scopus citations

Abstract

To development large-size and complex high-entropy ceramic (HEC) components, the joining of (Ti_0.2Zr_0.2Nb_0.2Ta_0.2Cr_0.2)C and Nb metal with nickel-based filler alloy was performed. The microstructure was characterized by SEM and the phase composition was analyzed by EDS and XRD. The brazing mechanism of the joint was mainly derived from the diffusion of Nb, which formed the NbC reaction layer in the HEC part and the diffusion zone in Nb metal part. The highest shear strength of the brazed joints at 1170 °C/10min was 139 MPa at room temperature and 117 MPa at 800 °C. In addition, the effect of brazing temperature on the microstructure and shear strength was discussed. This work provided a key method to prepare high-temperature resistant complex and large-size HEC components.

Original language	English
Article number	111464
Journal	Vacuum
Volume	205
DOIs	https://doi.org/10.1016/j.vacuum.2022.111464
State	Published - Nov 2022

Keywords

Brazing
High-entropy ceramic
Nickle-based filler

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10.1016/j.vacuum.2022.111464

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@article{6c9a3a78597c43e58acb30296862fafd,

title = "Active brazing of high entropy ceramic and Nb metal: Interfacial microstructure and brazing mechanism",

abstract = "To development large-size and complex high-entropy ceramic (HEC) components, the joining of (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C and Nb metal with nickel-based filler alloy was performed. The microstructure was characterized by SEM and the phase composition was analyzed by EDS and XRD. The brazing mechanism of the joint was mainly derived from the diffusion of Nb, which formed the NbC reaction layer in the HEC part and the diffusion zone in Nb metal part. The highest shear strength of the brazed joints at 1170 °C/10min was 139 MPa at room temperature and 117 MPa at 800 °C. In addition, the effect of brazing temperature on the microstructure and shear strength was discussed. This work provided a key method to prepare high-temperature resistant complex and large-size HEC components.",

keywords = "Brazing, High-entropy ceramic, Nickle-based filler",

author = "Pengcheng Wang and Zhiquan Xu and Bin Qin and Jinghuang Lin and Jian Cao and Jicai Feng and Junlei Qi",

note = "Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

year = "2022",

month = nov,

doi = "10.1016/j.vacuum.2022.111464",

language = "英语",

volume = "205",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Ltd",

}

TY - JOUR

T1 - Active brazing of high entropy ceramic and Nb metal

T2 - Interfacial microstructure and brazing mechanism

AU - Wang, Pengcheng

AU - Xu, Zhiquan

AU - Qin, Bin

AU - Lin, Jinghuang

AU - Cao, Jian

AU - Feng, Jicai

AU - Qi, Junlei

PY - 2022/11

Y1 - 2022/11

N2 - To development large-size and complex high-entropy ceramic (HEC) components, the joining of (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C and Nb metal with nickel-based filler alloy was performed. The microstructure was characterized by SEM and the phase composition was analyzed by EDS and XRD. The brazing mechanism of the joint was mainly derived from the diffusion of Nb, which formed the NbC reaction layer in the HEC part and the diffusion zone in Nb metal part. The highest shear strength of the brazed joints at 1170 °C/10min was 139 MPa at room temperature and 117 MPa at 800 °C. In addition, the effect of brazing temperature on the microstructure and shear strength was discussed. This work provided a key method to prepare high-temperature resistant complex and large-size HEC components.

AB - To development large-size and complex high-entropy ceramic (HEC) components, the joining of (Ti0.2Zr0.2Nb0.2Ta0.2Cr0.2)C and Nb metal with nickel-based filler alloy was performed. The microstructure was characterized by SEM and the phase composition was analyzed by EDS and XRD. The brazing mechanism of the joint was mainly derived from the diffusion of Nb, which formed the NbC reaction layer in the HEC part and the diffusion zone in Nb metal part. The highest shear strength of the brazed joints at 1170 °C/10min was 139 MPa at room temperature and 117 MPa at 800 °C. In addition, the effect of brazing temperature on the microstructure and shear strength was discussed. This work provided a key method to prepare high-temperature resistant complex and large-size HEC components.

KW - Brazing

KW - High-entropy ceramic

KW - Nickle-based filler

UR - https://www.scopus.com/pages/publications/85137067305

U2 - 10.1016/j.vacuum.2022.111464

DO - 10.1016/j.vacuum.2022.111464

M3 - 文章

AN - SCOPUS:85137067305

SN - 0042-207X

VL - 205

JO - Vacuum

JF - Vacuum

M1 - 111464

ER -

Active brazing of high entropy ceramic and Nb metal: Interfacial microstructure and brazing mechanism

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Keywords

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