Fabrication and microstructures of functional gradient SiBCN-Nb composite by hot pressing

Min Sun; Ruoyu Fu; Jun Chen; Xiaofang Mao; Jie Zhang; Zhihua Yang; Bin Liang

doi:10.1016/j.matchar.2016.02.014

Fabrication and microstructures of functional gradient SiBCN-Nb composite by hot pressing

Min Sun^*
, Ruoyu Fu
, Jun Chen
, Xiaofang Mao
, Jie Zhang
, Zhihua Yang
, Bin Liang

^*Corresponding author for this work

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

7 Scopus citations

Abstract

A functional gradient material with five layers composed of SiBCN ceramic and niobium (Nb) was prepared successfully by hot pressing. The phase composition, morphology features and microstructures were investigated in each layer of the gradient material. The Nb-containing compounds involving NbC, Nb₆C₅, Nb₄C₃, Nb₅Si₃ and NbN increase with the volume fraction of Nb increasing in the sub-layer. They are randomly scattered (≤ 25 vol.% Nb), then strip-like, and finally distribute continuously (≥ 75 vol.% Nb). The size of BN(C) and SiC grains in Nb-containing layers is larger than in 100% SiBCN layer due to the loss of the capsule-like structures. No distinct interfaces form in the transition regions indicating the gradual changes in phase composition and microstructures.

Original language	English
Pages (from-to)	115-121
Number of pages	7
Journal	Materials Characterization
Volume	114
DOIs	https://doi.org/10.1016/j.matchar.2016.02.014
State	Published - 1 Apr 2016
Externally published	Yes

Keywords

Functional gradient materials
Scanning electron microscope (SEM)
SiBCN-Nb
Thermodynamics
Transmission electron microscope (TEM)
X-ray diffraction (XRD)

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10.1016/j.matchar.2016.02.014

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@article{454fd014252b4548b04312c1485cd8e2,

title = "Fabrication and microstructures of functional gradient SiBCN-Nb composite by hot pressing",

abstract = "A functional gradient material with five layers composed of SiBCN ceramic and niobium (Nb) was prepared successfully by hot pressing. The phase composition, morphology features and microstructures were investigated in each layer of the gradient material. The Nb-containing compounds involving NbC, Nb6C5, Nb4C3, Nb5Si3 and NbN increase with the volume fraction of Nb increasing in the sub-layer. They are randomly scattered (≤ 25 vol.\% Nb), then strip-like, and finally distribute continuously (≥ 75 vol.\% Nb). The size of BN(C) and SiC grains in Nb-containing layers is larger than in 100\% SiBCN layer due to the loss of the capsule-like structures. No distinct interfaces form in the transition regions indicating the gradual changes in phase composition and microstructures.",

keywords = "Functional gradient materials, Scanning electron microscope (SEM), SiBCN-Nb, Thermodynamics, Transmission electron microscope (TEM), X-ray diffraction (XRD)",

author = "Min Sun and Ruoyu Fu and Jun Chen and Xiaofang Mao and Jie Zhang and Zhihua Yang and Bin Liang",

note = "Publisher Copyright: {\textcopyright} 2016 Published by Elsevier Inc.",

year = "2016",

month = apr,

day = "1",

doi = "10.1016/j.matchar.2016.02.014",

language = "英语",

volume = "114",

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journal = "Materials Characterization",

issn = "1044-5803",

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}

TY - JOUR

T1 - Fabrication and microstructures of functional gradient SiBCN-Nb composite by hot pressing

AU - Sun, Min

AU - Fu, Ruoyu

AU - Chen, Jun

AU - Mao, Xiaofang

AU - Zhang, Jie

AU - Yang, Zhihua

AU - Liang, Bin

PY - 2016/4/1

Y1 - 2016/4/1

N2 - A functional gradient material with five layers composed of SiBCN ceramic and niobium (Nb) was prepared successfully by hot pressing. The phase composition, morphology features and microstructures were investigated in each layer of the gradient material. The Nb-containing compounds involving NbC, Nb6C5, Nb4C3, Nb5Si3 and NbN increase with the volume fraction of Nb increasing in the sub-layer. They are randomly scattered (≤ 25 vol.% Nb), then strip-like, and finally distribute continuously (≥ 75 vol.% Nb). The size of BN(C) and SiC grains in Nb-containing layers is larger than in 100% SiBCN layer due to the loss of the capsule-like structures. No distinct interfaces form in the transition regions indicating the gradual changes in phase composition and microstructures.

AB - A functional gradient material with five layers composed of SiBCN ceramic and niobium (Nb) was prepared successfully by hot pressing. The phase composition, morphology features and microstructures were investigated in each layer of the gradient material. The Nb-containing compounds involving NbC, Nb6C5, Nb4C3, Nb5Si3 and NbN increase with the volume fraction of Nb increasing in the sub-layer. They are randomly scattered (≤ 25 vol.% Nb), then strip-like, and finally distribute continuously (≥ 75 vol.% Nb). The size of BN(C) and SiC grains in Nb-containing layers is larger than in 100% SiBCN layer due to the loss of the capsule-like structures. No distinct interfaces form in the transition regions indicating the gradual changes in phase composition and microstructures.

KW - Functional gradient materials

KW - Scanning electron microscope (SEM)

KW - SiBCN-Nb

KW - Thermodynamics

KW - Transmission electron microscope (TEM)

KW - X-ray diffraction (XRD)

UR - https://www.scopus.com/pages/publications/84960121194

U2 - 10.1016/j.matchar.2016.02.014

DO - 10.1016/j.matchar.2016.02.014

M3 - 文章

AN - SCOPUS:84960121194

SN - 1044-5803

VL - 114

SP - 115

EP - 121

JO - Materials Characterization

JF - Materials Characterization

ER -

Fabrication and microstructures of functional gradient SiBCN-Nb composite by hot pressing

Abstract

Keywords

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