Preparation and flame ablation/oxidation behavior of ZrB2/SiC ultra-high temperature ceramic composites

Chang An Wang; Hailong Wang; Yong Huang; Daining Fang

doi:10.4028/0-87849-451-0.142

Preparation and flame ablation/oxidation behavior of ZrB₂/SiC ultra-high temperature ceramic composites

Chang An Wang^*, Hailong Wang, Yong Huang, Daining Fang

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

ZriB₂/SiC ceramic composites reinforced by nano-SiC whiskers and SiC particles have been prepared by hot-pressing at 1950°C for 1hr under 20 MPa pressure in flow argon atmosphere. Effects of SiC addition on microstructure, mechanical properties and thermal ablation/oxidation behavior of ZrB₂/SiC composites were investigated. The results showed that the addition of SiC effectively improved the densification of ZrB₂/SiC composites and almost full dense ZrB₂/SiC composites were obtained when the amount of SiC increased up to 20 vol%. Flexural strength and fracture toughness of the ZrB₂/SiC composites were also enhanced; the maximum strength and toughness reached 600 MPa and 8.81 MPa'rn^1/2 at SiC additions of 20 vol % and 30 vol%, respectively. The composites possessed good resistance to flame ablation and could keep the whole shape without distinct peeling or cracking after flame ablation by oxyacetylene flame for 3 mins. The more SiC added, the better resistance to flame ablation the composites displayed.

Original language	English
Pages (from-to)	142-146
Number of pages	5
Journal	Key Engineering Materials
Volume	351
DOIs	https://doi.org/10.4028/0-87849-451-0.142
Publication status	Published - 2007
Externally published	Yes

Keywords

Flame ablation
Mechanical properties
UHTC
ZrB/SiC

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10.4028/0-87849-451-0.142

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title = "Preparation and flame ablation/oxidation behavior of ZrB2/SiC ultra-high temperature ceramic composites",

abstract = "ZriB2/SiC ceramic composites reinforced by nano-SiC whiskers and SiC particles have been prepared by hot-pressing at 1950°C for 1hr under 20 MPa pressure in flow argon atmosphere. Effects of SiC addition on microstructure, mechanical properties and thermal ablation/oxidation behavior of ZrB2/SiC composites were investigated. The results showed that the addition of SiC effectively improved the densification of ZrB2/SiC composites and almost full dense ZrB2/SiC composites were obtained when the amount of SiC increased up to 20 vol%. Flexural strength and fracture toughness of the ZrB2/SiC composites were also enhanced; the maximum strength and toughness reached 600 MPa and 8.81 MPa'rn1/2 at SiC additions of 20 vol % and 30 vol%, respectively. The composites possessed good resistance to flame ablation and could keep the whole shape without distinct peeling or cracking after flame ablation by oxyacetylene flame for 3 mins. The more SiC added, the better resistance to flame ablation the composites displayed.",

keywords = "Flame ablation, Mechanical properties, UHTC, ZrB/SiC",

author = "Wang, {Chang An} and Hailong Wang and Yong Huang and Daining Fang",

year = "2007",

doi = "10.4028/0-87849-451-0.142",

language = "English",

volume = "351",

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journal = "Key Engineering Materials",

issn = "1013-9826",

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T1 - Preparation and flame ablation/oxidation behavior of ZrB2/SiC ultra-high temperature ceramic composites

AU - Wang, Chang An

AU - Wang, Hailong

AU - Huang, Yong

AU - Fang, Daining

PY - 2007

Y1 - 2007

N2 - ZriB2/SiC ceramic composites reinforced by nano-SiC whiskers and SiC particles have been prepared by hot-pressing at 1950°C for 1hr under 20 MPa pressure in flow argon atmosphere. Effects of SiC addition on microstructure, mechanical properties and thermal ablation/oxidation behavior of ZrB2/SiC composites were investigated. The results showed that the addition of SiC effectively improved the densification of ZrB2/SiC composites and almost full dense ZrB2/SiC composites were obtained when the amount of SiC increased up to 20 vol%. Flexural strength and fracture toughness of the ZrB2/SiC composites were also enhanced; the maximum strength and toughness reached 600 MPa and 8.81 MPa'rn1/2 at SiC additions of 20 vol % and 30 vol%, respectively. The composites possessed good resistance to flame ablation and could keep the whole shape without distinct peeling or cracking after flame ablation by oxyacetylene flame for 3 mins. The more SiC added, the better resistance to flame ablation the composites displayed.

AB - ZriB2/SiC ceramic composites reinforced by nano-SiC whiskers and SiC particles have been prepared by hot-pressing at 1950°C for 1hr under 20 MPa pressure in flow argon atmosphere. Effects of SiC addition on microstructure, mechanical properties and thermal ablation/oxidation behavior of ZrB2/SiC composites were investigated. The results showed that the addition of SiC effectively improved the densification of ZrB2/SiC composites and almost full dense ZrB2/SiC composites were obtained when the amount of SiC increased up to 20 vol%. Flexural strength and fracture toughness of the ZrB2/SiC composites were also enhanced; the maximum strength and toughness reached 600 MPa and 8.81 MPa'rn1/2 at SiC additions of 20 vol % and 30 vol%, respectively. The composites possessed good resistance to flame ablation and could keep the whole shape without distinct peeling or cracking after flame ablation by oxyacetylene flame for 3 mins. The more SiC added, the better resistance to flame ablation the composites displayed.

KW - Flame ablation

KW - Mechanical properties

KW - UHTC

KW - ZrB/SiC

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DO - 10.4028/0-87849-451-0.142

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SP - 142

EP - 146

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Preparation and flame ablation/oxidation behavior of ZrB₂/SiC ultra-high temperature ceramic composites

Abstract

Keywords

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