Oxidation behaviour of ZrB2–SiC (Al/Y) ceramics at 1700 °C

Jiabei He; Yiguang Wang; Lei Luo; Linan An

doi:10.1016/j.jeurceramsoc.2016.02.037

Oxidation behaviour of ZrB₂–SiC (Al/Y) ceramics at 1700 °C

Jiabei He, Yiguang Wang^*, Lei Luo, Linan An

^*Corresponding author for this work

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

34 Citations (Scopus)

Abstract

ZrB₂–SiC(Al/Y) ceramic composites were prepared by hot-pressing a mixture of ZrB₂ and polymer-derived SiC doped with either aluminium or yttrium (SiC(Al/Y)). The obtained composites were oxidized at 1700 °C in air. The weight change as a function of the oxidation time was measured to study the oxidation kinetics. It was found that the ZrB₂–SiC(Al/Y) composites exhibited significantly improved oxidation resistance, as compared to the composite of ZrB₂ with un-doped SiC. The structure of the oxide resulted from the oxidation of the composites was characterized by scanning electron microscopy and X-ray diffraction. The results suggested that the improvement can be attributed to the formation of yttrium/aluminium-doped silica and/or yttrium disilicate, which effectively protect the composites.

Original language	English
Pages (from-to)	3769-3774
Number of pages	6
Journal	Journal of the European Ceramic Society
Volume	36
Issue number	15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2016.02.037
Publication status	Published - 1 Nov 2016
Externally published	Yes

Keywords

Doped
Oxidation
Oxidation kinetics
Oxidation resistance
ZrB–SiC

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10.1016/j.jeurceramsoc.2016.02.037

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title = "Oxidation behaviour of ZrB2–SiC (Al/Y) ceramics at 1700 °C",

abstract = "ZrB2–SiC(Al/Y) ceramic composites were prepared by hot-pressing a mixture of ZrB2 and polymer-derived SiC doped with either aluminium or yttrium (SiC(Al/Y)). The obtained composites were oxidized at 1700 °C in air. The weight change as a function of the oxidation time was measured to study the oxidation kinetics. It was found that the ZrB2–SiC(Al/Y) composites exhibited significantly improved oxidation resistance, as compared to the composite of ZrB2 with un-doped SiC. The structure of the oxide resulted from the oxidation of the composites was characterized by scanning electron microscopy and X-ray diffraction. The results suggested that the improvement can be attributed to the formation of yttrium/aluminium-doped silica and/or yttrium disilicate, which effectively protect the composites.",

keywords = "Doped, Oxidation, Oxidation kinetics, Oxidation resistance, ZrB–SiC",

author = "Jiabei He and Yiguang Wang and Lei Luo and Linan An",

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year = "2016",

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doi = "10.1016/j.jeurceramsoc.2016.02.037",

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TY - JOUR

T1 - Oxidation behaviour of ZrB2–SiC (Al/Y) ceramics at 1700 °C

AU - He, Jiabei

AU - Wang, Yiguang

AU - Luo, Lei

AU - An, Linan

PY - 2016/11/1

Y1 - 2016/11/1

N2 - ZrB2–SiC(Al/Y) ceramic composites were prepared by hot-pressing a mixture of ZrB2 and polymer-derived SiC doped with either aluminium or yttrium (SiC(Al/Y)). The obtained composites were oxidized at 1700 °C in air. The weight change as a function of the oxidation time was measured to study the oxidation kinetics. It was found that the ZrB2–SiC(Al/Y) composites exhibited significantly improved oxidation resistance, as compared to the composite of ZrB2 with un-doped SiC. The structure of the oxide resulted from the oxidation of the composites was characterized by scanning electron microscopy and X-ray diffraction. The results suggested that the improvement can be attributed to the formation of yttrium/aluminium-doped silica and/or yttrium disilicate, which effectively protect the composites.

AB - ZrB2–SiC(Al/Y) ceramic composites were prepared by hot-pressing a mixture of ZrB2 and polymer-derived SiC doped with either aluminium or yttrium (SiC(Al/Y)). The obtained composites were oxidized at 1700 °C in air. The weight change as a function of the oxidation time was measured to study the oxidation kinetics. It was found that the ZrB2–SiC(Al/Y) composites exhibited significantly improved oxidation resistance, as compared to the composite of ZrB2 with un-doped SiC. The structure of the oxide resulted from the oxidation of the composites was characterized by scanning electron microscopy and X-ray diffraction. The results suggested that the improvement can be attributed to the formation of yttrium/aluminium-doped silica and/or yttrium disilicate, which effectively protect the composites.

KW - Doped

KW - Oxidation

KW - Oxidation kinetics

KW - Oxidation resistance

KW - ZrB–SiC

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SN - 0955-2219

VL - 36

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JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 15

ER -

Oxidation behaviour of ZrB₂–SiC (Al/Y) ceramics at 1700 °C

Abstract

Keywords

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