The effect of Si3N4 on microstructure, mechanical properties and oxidation resistance of HfB2-based composite

Ling Weng; Xinghong Zhang; Jiecai Han; Wenbo Han

doi:10.1177/0021998308098236

The effect of Si3N4 on microstructure, mechanical properties and oxidation resistance of HfB2-based composite

Ling Weng^*
, Xinghong Zhang
, Jiecai Han
, Wenbo Han

^*Corresponding author for this work

School of Astronautics

Harbin University of Science and Technology
Harbin Institute of Technology

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

13 Scopus citations

Abstract

HfB₂ĝ€"20vol% SiC composite was hot-pressed at 1900°C with silicon nitride (Si₃N₄) as sintering aid. Sinterability and mechanical properties were investigated and compared to the composite without the sintering aid. It was shown that the addition of Si ₃N₄ greatly improved the powder sinterability and enabled the production of nearly full dense composite. The flexural strength and fracture toughness were 590 MPa and 5.43 MPa m^1/2, respectively. The oxidation resistance of composite doped with Si₃N₄ was evaluated by the oxyacetylene oxidation test and the oxidation mechanism was discussed.

Original language	English
Pages (from-to)	113-123
Number of pages	11
Journal	Journal of Composite Materials
Volume	43
Issue number	2
DOIs	https://doi.org/10.1177/0021998308098236
State	Published - Jan 2009

Keywords

HfB2
Mechanical properties
Microstructure
Oxidation resistance
Sintering aid

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10.1177/0021998308098236

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title = "The effect of Si3N4 on microstructure, mechanical properties and oxidation resistance of HfB2-based composite",

abstract = "HfB2ĝ€{"}20vol\% SiC composite was hot-pressed at 1900°C with silicon nitride (Si3N4) as sintering aid. Sinterability and mechanical properties were investigated and compared to the composite without the sintering aid. It was shown that the addition of Si 3N4 greatly improved the powder sinterability and enabled the production of nearly full dense composite. The flexural strength and fracture toughness were 590 MPa and 5.43 MPa m1/2, respectively. The oxidation resistance of composite doped with Si3N4 was evaluated by the oxyacetylene oxidation test and the oxidation mechanism was discussed.",

keywords = "HfB2, Mechanical properties, Microstructure, Oxidation resistance, Sintering aid",

author = "Ling Weng and Xinghong Zhang and Jiecai Han and Wenbo Han",

year = "2009",

month = jan,

doi = "10.1177/0021998308098236",

language = "英语",

volume = "43",

pages = "113--123",

journal = "Journal of Composite Materials",

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TY - JOUR

T1 - The effect of Si3N4 on microstructure, mechanical properties and oxidation resistance of HfB2-based composite

AU - Weng, Ling

AU - Zhang, Xinghong

AU - Han, Jiecai

AU - Han, Wenbo

PY - 2009/1

Y1 - 2009/1

N2 - HfB2ĝ€"20vol% SiC composite was hot-pressed at 1900°C with silicon nitride (Si3N4) as sintering aid. Sinterability and mechanical properties were investigated and compared to the composite without the sintering aid. It was shown that the addition of Si 3N4 greatly improved the powder sinterability and enabled the production of nearly full dense composite. The flexural strength and fracture toughness were 590 MPa and 5.43 MPa m1/2, respectively. The oxidation resistance of composite doped with Si3N4 was evaluated by the oxyacetylene oxidation test and the oxidation mechanism was discussed.

AB - HfB2ĝ€"20vol% SiC composite was hot-pressed at 1900°C with silicon nitride (Si3N4) as sintering aid. Sinterability and mechanical properties were investigated and compared to the composite without the sintering aid. It was shown that the addition of Si 3N4 greatly improved the powder sinterability and enabled the production of nearly full dense composite. The flexural strength and fracture toughness were 590 MPa and 5.43 MPa m1/2, respectively. The oxidation resistance of composite doped with Si3N4 was evaluated by the oxyacetylene oxidation test and the oxidation mechanism was discussed.

KW - HfB2

KW - Mechanical properties

KW - Microstructure

KW - Oxidation resistance

KW - Sintering aid

UR - https://www.scopus.com/pages/publications/58149330591

U2 - 10.1177/0021998308098236

DO - 10.1177/0021998308098236

M3 - 文章

AN - SCOPUS:58149330591

SN - 0021-9983

VL - 43

SP - 113

EP - 123

JO - Journal of Composite Materials

JF - Journal of Composite Materials

IS - 2

ER -

The effect of Si3N4 on microstructure, mechanical properties and oxidation resistance of HfB2-based composite

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Keywords

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