Spark plasma sintering of TiN-TiB2 composites

Mettaya Kitiwan; Akihiko Ito; Takashi Goto

doi:10.1016/j.jeurceramsoc.2013.08.034

Spark plasma sintering of TiN-TiB2 composites

Mettaya Kitiwan, Akihiko Ito, Takashi Goto

金属材料研究所・材料プロセス・評価研究部

研究成果: Article › 査読

26 被引用数 (Scopus)

抄録

TiN-TiB₂ composites were fabricated by spark plasma sintering at 1773-2573K. Effects of TiN and TiB₂ content on relative density, microstructure, and mechanical properties were investigated. Above 2373K, TiN-TiB₂ composites exhibited relative densities over 95%. A high density of 99.7% was obtained at 2573K with 20-30vol% TiB₂. Shrinkage of the TiN-70vol% TiB₂ composite was the highest at 1573-2473K. For the TiN-70vol% TiB₂ composite prepared at 1973-2373K, TiN grains were small, while at 2573K, TiB₂ became a continuous matrix, in which irregular-shaped TiN dispersed. hBN was formed in the TiN-TiB₂ composite containing 50-60vol% TiB₂ above 2373K. The maximum Vickers hardness and fracture toughness obtained for the TiN-80vol% TiB₂ composite sintered at 2473K was 26.3GPa and 4.5MPa m^1/2, respectively.

本文言語	English
ページ（範囲）	197-203
ページ数	7
ジャーナル	Journal of the European Ceramic Society
巻	34
号	2
DOI	https://doi.org/10.1016/j.jeurceramsoc.2013.08.034
出版ステータス	Published - 2014 2月 1

ASJC Scopus subject areas

セラミックおよび複合材料
材料化学

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10.1016/j.jeurceramsoc.2013.08.034

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title = "Spark plasma sintering of TiN-TiB2 composites",

abstract = "TiN-TiB2 composites were fabricated by spark plasma sintering at 1773-2573K. Effects of TiN and TiB2 content on relative density, microstructure, and mechanical properties were investigated. Above 2373K, TiN-TiB2 composites exhibited relative densities over 95%. A high density of 99.7% was obtained at 2573K with 20-30vol% TiB2. Shrinkage of the TiN-70vol% TiB2 composite was the highest at 1573-2473K. For the TiN-70vol% TiB2 composite prepared at 1973-2373K, TiN grains were small, while at 2573K, TiB2 became a continuous matrix, in which irregular-shaped TiN dispersed. hBN was formed in the TiN-TiB2 composite containing 50-60vol% TiB2 above 2373K. The maximum Vickers hardness and fracture toughness obtained for the TiN-80vol% TiB2 composite sintered at 2473K was 26.3GPa and 4.5MPa m1/2, respectively.",

keywords = "Spark plasma sintering, Titanium diboride, Titanium nitride",

author = "Mettaya Kitiwan and Akihiko Ito and Takashi Goto",

year = "2014",

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doi = "10.1016/j.jeurceramsoc.2013.08.034",

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AU - Kitiwan, Mettaya

AU - Ito, Akihiko

AU - Goto, Takashi

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Y1 - 2014/2/1

N2 - TiN-TiB2 composites were fabricated by spark plasma sintering at 1773-2573K. Effects of TiN and TiB2 content on relative density, microstructure, and mechanical properties were investigated. Above 2373K, TiN-TiB2 composites exhibited relative densities over 95%. A high density of 99.7% was obtained at 2573K with 20-30vol% TiB2. Shrinkage of the TiN-70vol% TiB2 composite was the highest at 1573-2473K. For the TiN-70vol% TiB2 composite prepared at 1973-2373K, TiN grains were small, while at 2573K, TiB2 became a continuous matrix, in which irregular-shaped TiN dispersed. hBN was formed in the TiN-TiB2 composite containing 50-60vol% TiB2 above 2373K. The maximum Vickers hardness and fracture toughness obtained for the TiN-80vol% TiB2 composite sintered at 2473K was 26.3GPa and 4.5MPa m1/2, respectively.

AB - TiN-TiB2 composites were fabricated by spark plasma sintering at 1773-2573K. Effects of TiN and TiB2 content on relative density, microstructure, and mechanical properties were investigated. Above 2373K, TiN-TiB2 composites exhibited relative densities over 95%. A high density of 99.7% was obtained at 2573K with 20-30vol% TiB2. Shrinkage of the TiN-70vol% TiB2 composite was the highest at 1573-2473K. For the TiN-70vol% TiB2 composite prepared at 1973-2373K, TiN grains were small, while at 2573K, TiB2 became a continuous matrix, in which irregular-shaped TiN dispersed. hBN was formed in the TiN-TiB2 composite containing 50-60vol% TiB2 above 2373K. The maximum Vickers hardness and fracture toughness obtained for the TiN-80vol% TiB2 composite sintered at 2473K was 26.3GPa and 4.5MPa m1/2, respectively.

KW - Spark plasma sintering

KW - Titanium diboride

KW - Titanium nitride

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Spark plasma sintering of TiN-TiB2 composites

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