Mechanical properties and oxidation resistance of Si3N4-SiC nanocomposites

Young Hag Koh; Hae Won Kim; Hyoun Ee Kim

doi:10.1016/S1359-6462(01)00885-5

Mechanical properties and oxidation resistance of Si₃N₄-SiC nanocomposites

Young Hag Koh, Hae Won Kim, Hyoun Ee Kim

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

17 Citations (Scopus)

Abstract

The addition of SiC nanoparticles and Si₃N₄ whiskers had significant effects on the microstructure and mechanical properties of Si₃N₄. Excellent flexural strength, fracture toughness, and high-temperature strength were obtained by adjusting the relative concentration of SiC nanoparticle and Si₃N₄ whiskers. After oxidation, the flexural strength of the nanocomposite increased by about 40% due to the crystallization of both the oxidation product and the grain boundary by the SiC nanoparticles.

Original language	English
Pages (from-to)	2069-2073
Number of pages	5
Journal	Scripta Materialia
Volume	44
Issue number	8-9
DOIs	https://doi.org/10.1016/S1359-6462(01)00885-5
Publication status	Published - 2001 May 18
Externally published	Yes

Keywords

Mechanical properties
Oxidation resistance
SiN whiskers
SiN/SiC nanocomoposite

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/S1359-6462(01)00885-5

Cite this

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abstract = "The addition of SiC nanoparticles and Si3N4 whiskers had significant effects on the microstructure and mechanical properties of Si3N4. Excellent flexural strength, fracture toughness, and high-temperature strength were obtained by adjusting the relative concentration of SiC nanoparticle and Si3N4 whiskers. After oxidation, the flexural strength of the nanocomposite increased by about 40% due to the crystallization of both the oxidation product and the grain boundary by the SiC nanoparticles.",

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AU - Kim, Hae Won

AU - Kim, Hyoun Ee

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N2 - The addition of SiC nanoparticles and Si3N4 whiskers had significant effects on the microstructure and mechanical properties of Si3N4. Excellent flexural strength, fracture toughness, and high-temperature strength were obtained by adjusting the relative concentration of SiC nanoparticle and Si3N4 whiskers. After oxidation, the flexural strength of the nanocomposite increased by about 40% due to the crystallization of both the oxidation product and the grain boundary by the SiC nanoparticles.

AB - The addition of SiC nanoparticles and Si3N4 whiskers had significant effects on the microstructure and mechanical properties of Si3N4. Excellent flexural strength, fracture toughness, and high-temperature strength were obtained by adjusting the relative concentration of SiC nanoparticle and Si3N4 whiskers. After oxidation, the flexural strength of the nanocomposite increased by about 40% due to the crystallization of both the oxidation product and the grain boundary by the SiC nanoparticles.

KW - Mechanical properties

KW - Oxidation resistance

KW - SiN whiskers

KW - SiN/SiC nanocomoposite

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