Machinability and contact damage of Al2O3/BN composites fabricated through chemical processing

Takafumi Kusunose; Takuya Nomoto; Tohru Sekino; Bum Sung Kim; Yo Yamamoto; Koichi Niihara

doi:10.2109/jcersj.111.821

Machinability and contact damage of Al₂O₃/BN composites fabricated through chemical processing

Takafumi Kusunose, Takuya Nomoto, Tohru Sekino, Bum Sung Kim, Yo Yamamoto, Koichi Niihara

Institute of Multidisciplinary Research for Advanced Materials (IMRAM)

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

3 Citations (Scopus)

Abstract

The machinability and contact damage of Al₂O₃/BN nanocomposites fabricated through the chemical method were investigated in the present work. The Al₂O₃/BN microcomposites indicated considerably low fracture strength by adding BN particles, although machinability was improved. However, the nanocomposites showed both high fracture strength and good machinability. Hertzian contact test were performed to evaluate the contact damage. From the result of SEM observation of the samples after this test, it was found that the damage of the monolithic Al₂O₃ and Al₂O₃/BN microcomposites have a classical Hertzian cone fracture and many large cracks, respectively, whereas the damage observed in the nanocomposites appeared to be quasi-plastic deformation.

Original language	English
Pages (from-to)	821-825
Number of pages	5
Journal	Journal of the Ceramic Society of Japan
Volume	111
Issue number	1299
DOIs	https://doi.org/10.2109/jcersj.111.821
Publication status	Published - 2003 Nov

Keywords

Alumina
Boron nitride
Contact damage
High strength
Low Young's modulus
Machinability
Nanocomposite
Quasi-plastic

ASJC Scopus subject areas

Ceramics and Composites
Chemistry(all)
Condensed Matter Physics
Materials Chemistry

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title = "Machinability and contact damage of Al2O3/BN composites fabricated through chemical processing",

abstract = "The machinability and contact damage of Al2O3/BN nanocomposites fabricated through the chemical method were investigated in the present work. The Al2O3/BN microcomposites indicated considerably low fracture strength by adding BN particles, although machinability was improved. However, the nanocomposites showed both high fracture strength and good machinability. Hertzian contact test were performed to evaluate the contact damage. From the result of SEM observation of the samples after this test, it was found that the damage of the monolithic Al2O3 and Al2O3/BN microcomposites have a classical Hertzian cone fracture and many large cracks, respectively, whereas the damage observed in the nanocomposites appeared to be quasi-plastic deformation.",

keywords = "Alumina, Boron nitride, Contact damage, High strength, Low Young's modulus, Machinability, Nanocomposite, Quasi-plastic",

author = "Takafumi Kusunose and Takuya Nomoto and Tohru Sekino and Kim, {Bum Sung} and Yo Yamamoto and Koichi Niihara",

year = "2003",

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doi = "10.2109/jcersj.111.821",

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T1 - Machinability and contact damage of Al2O3/BN composites fabricated through chemical processing

AU - Kusunose, Takafumi

AU - Nomoto, Takuya

AU - Sekino, Tohru

AU - Kim, Bum Sung

AU - Yamamoto, Yo

AU - Niihara, Koichi

PY - 2003/11

Y1 - 2003/11

N2 - The machinability and contact damage of Al2O3/BN nanocomposites fabricated through the chemical method were investigated in the present work. The Al2O3/BN microcomposites indicated considerably low fracture strength by adding BN particles, although machinability was improved. However, the nanocomposites showed both high fracture strength and good machinability. Hertzian contact test were performed to evaluate the contact damage. From the result of SEM observation of the samples after this test, it was found that the damage of the monolithic Al2O3 and Al2O3/BN microcomposites have a classical Hertzian cone fracture and many large cracks, respectively, whereas the damage observed in the nanocomposites appeared to be quasi-plastic deformation.

AB - The machinability and contact damage of Al2O3/BN nanocomposites fabricated through the chemical method were investigated in the present work. The Al2O3/BN microcomposites indicated considerably low fracture strength by adding BN particles, although machinability was improved. However, the nanocomposites showed both high fracture strength and good machinability. Hertzian contact test were performed to evaluate the contact damage. From the result of SEM observation of the samples after this test, it was found that the damage of the monolithic Al2O3 and Al2O3/BN microcomposites have a classical Hertzian cone fracture and many large cracks, respectively, whereas the damage observed in the nanocomposites appeared to be quasi-plastic deformation.

KW - Alumina

KW - Boron nitride

KW - Contact damage

KW - High strength

KW - Low Young's modulus

KW - Machinability

KW - Nanocomposite

KW - Quasi-plastic

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