Detail publikace

Boron nitride nanotubes as a reinforcement for brittle matrices

Originální název

Boron nitride nanotubes as a reinforcement for brittle matrices

Anglický název

Boron nitride nanotubes as a reinforcement for brittle matrices

Jazyk

en

Originální abstrakt

Cylindrical and bamboo-like boron nitride nanotubes (BNNTs) have been used to reinforce brittle amorphous borosilicate glass matrix materials prepared by spark plasma sintering. The mechanical properties, such as hardness, Youngs modulus, fracture toughness, and scratch resistance of the materials have been investigated. The fracture toughness of the composites showed an improvement of app. 30% compared to the pure amorphous glass. BNNTs pull-out, crack bridging, stretching, and crack deflection toughening mechanisms were observed in the reinforced glass matrix composites. Extensive pull-out of the BNNTs (>400 nm) was observed in the form of the telescopic sword-in-sheath mechanism, resulting in poor energy dissipation due to the weak Van der Waals force between the inner walls of the BNNTs. The scratch resistance was significantly improved (app.26%) after the addition of the BNNTs, and the results correspond well with the brittleness index of the materials.

Anglický abstrakt

Cylindrical and bamboo-like boron nitride nanotubes (BNNTs) have been used to reinforce brittle amorphous borosilicate glass matrix materials prepared by spark plasma sintering. The mechanical properties, such as hardness, Youngs modulus, fracture toughness, and scratch resistance of the materials have been investigated. The fracture toughness of the composites showed an improvement of app. 30% compared to the pure amorphous glass. BNNTs pull-out, crack bridging, stretching, and crack deflection toughening mechanisms were observed in the reinforced glass matrix composites. Extensive pull-out of the BNNTs (>400 nm) was observed in the form of the telescopic sword-in-sheath mechanism, resulting in poor energy dissipation due to the weak Van der Waals force between the inner walls of the BNNTs. The scratch resistance was significantly improved (app.26%) after the addition of the BNNTs, and the results correspond well with the brittleness index of the materials.

BibTex


@article{BUT113348,
  author="Peter {Tatarko} and Salvatore {Grasso} and Harshit {Porwal} and Zdeněk {Chlup} and Richa {Saggar} and Ivo {Dlouhý} and Mike {Reece}",
  title="Boron nitride nanotubes as a reinforcement for brittle matrices",
  annote="Cylindrical and bamboo-like boron nitride nanotubes (BNNTs) have been used to reinforce brittle amorphous borosilicate glass matrix materials prepared by spark plasma sintering. The mechanical properties, such as hardness, Youngs modulus, fracture toughness, and scratch resistance of the materials have been investigated. The fracture toughness of the composites showed an improvement of app. 30% compared to the pure amorphous glass. BNNTs pull-out, crack bridging, stretching, and crack deflection toughening mechanisms were observed in the reinforced glass matrix composites. Extensive pull-out of the BNNTs (>400 nm) was observed in the form of the telescopic sword-in-sheath mechanism, resulting in poor energy dissipation due to the weak Van der Waals force between the inner walls of the BNNTs. The scratch resistance was significantly improved (app.26%) after the addition of the BNNTs, and the results correspond well with the brittleness index of the materials.",
  address="Elsevier",
  chapter="113348",
  doi="10.1016/j.jeurceramsoc.2014.03.028",
  howpublished="print",
  institution="Elsevier",
  number="14",
  volume="34",
  year="2014",
  month="may",
  pages="3339--3349",
  publisher="Elsevier",
  type="journal article in Web of Science"
}