Key issues on the reactive sintering of ZrB                         2                          ceramics from elementary raw materials

Ji Zou; Hai Bin Ma; Lei Chen; Yu Jin Wang; Guo Jun Zhang

doi:10.1016/j.scriptamat.2019.01.044

Key issues on the reactive sintering of ZrB ₂ ceramics from elementary raw materials

Ji Zou^*
, Hai Bin Ma
, Lei Chen
, Yu Jin Wang
, Guo Jun Zhang

^*Corresponding author for this work

School of Materials Science and Engineering

University of Birmingham
Wuhan University of Technology
Chinese Nuclear Power Technology Research Institute
Donghua University

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

24 Scopus citations

Abstract

Gas burst has been commonly observed during reactive sintering, especially when combustion was initialized therein. In this study, a model system (Zr + 2B = ZrB ₂ ) was chosen to investigate this phenomenon by a combination of thermo-analysis, mass spectrum investigation and electron microscopy studies. Results showed the combustion lead to a formation of various gaseous byproducts such as CO, CO ₂ , N ₂ , BO, BO ₂ and B ₂ O ₃ etc. Especially for BO(g), its generation consumed boron in the raw materials, resulting in the residual Zr-containing phase that accelerated the formation of interlocked ZrB ₂ grains in the sintered ceramics, which show relatively high strength (516 ± 42 MPa).

Original language	English
Pages (from-to)	105-109
Number of pages	5
Journal	Scripta Materialia
Volume	164
DOIs	https://doi.org/10.1016/j.scriptamat.2019.01.044
State	Published - 15 Apr 2019

Keywords

Borides
Microstructure
Self-propagating high-temperature synthesis (SHS)
Sintering

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title = " Key issues on the reactive sintering of ZrB 2 ceramics from elementary raw materials ",

abstract = " Gas burst has been commonly observed during reactive sintering, especially when combustion was initialized therein. In this study, a model system (Zr + 2B = ZrB 2 ) was chosen to investigate this phenomenon by a combination of thermo-analysis, mass spectrum investigation and electron microscopy studies. Results showed the combustion lead to a formation of various gaseous byproducts such as CO, CO 2 , N 2 , BO, BO 2 and B 2 O 3 etc. Especially for BO(g), its generation consumed boron in the raw materials, resulting in the residual Zr-containing phase that accelerated the formation of interlocked ZrB 2 grains in the sintered ceramics, which show relatively high strength (516 ± 42 MPa).",

keywords = "Borides, Microstructure, Self-propagating high-temperature synthesis (SHS), Sintering",

author = "Ji Zou and Ma, \{Hai Bin\} and Lei Chen and Wang, \{Yu Jin\} and Zhang, \{Guo Jun\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd",

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day = "15",

doi = "10.1016/j.scriptamat.2019.01.044",

language = "英语",

volume = "164",

pages = "105--109",

journal = "Scripta Materialia",

issn = "1359-6462",

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TY - JOUR

T1 - Key issues on the reactive sintering of ZrB 2 ceramics from elementary raw materials

AU - Zou, Ji

AU - Ma, Hai Bin

AU - Chen, Lei

AU - Wang, Yu Jin

AU - Zhang, Guo Jun

PY - 2019/4/15

Y1 - 2019/4/15

N2 - Gas burst has been commonly observed during reactive sintering, especially when combustion was initialized therein. In this study, a model system (Zr + 2B = ZrB 2 ) was chosen to investigate this phenomenon by a combination of thermo-analysis, mass spectrum investigation and electron microscopy studies. Results showed the combustion lead to a formation of various gaseous byproducts such as CO, CO 2 , N 2 , BO, BO 2 and B 2 O 3 etc. Especially for BO(g), its generation consumed boron in the raw materials, resulting in the residual Zr-containing phase that accelerated the formation of interlocked ZrB 2 grains in the sintered ceramics, which show relatively high strength (516 ± 42 MPa).

AB - Gas burst has been commonly observed during reactive sintering, especially when combustion was initialized therein. In this study, a model system (Zr + 2B = ZrB 2 ) was chosen to investigate this phenomenon by a combination of thermo-analysis, mass spectrum investigation and electron microscopy studies. Results showed the combustion lead to a formation of various gaseous byproducts such as CO, CO 2 , N 2 , BO, BO 2 and B 2 O 3 etc. Especially for BO(g), its generation consumed boron in the raw materials, resulting in the residual Zr-containing phase that accelerated the formation of interlocked ZrB 2 grains in the sintered ceramics, which show relatively high strength (516 ± 42 MPa).

KW - Borides

KW - Microstructure

KW - Self-propagating high-temperature synthesis (SHS)

KW - Sintering

UR - https://www.scopus.com/pages/publications/85061106898

U2 - 10.1016/j.scriptamat.2019.01.044

DO - 10.1016/j.scriptamat.2019.01.044

M3 - 文章

AN - SCOPUS:85061106898

SN - 1359-6462

VL - 164

SP - 105

EP - 109

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Key issues on the reactive sintering of ZrB ₂ ceramics from elementary raw materials

Abstract

Keywords

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