Detail publikačního výsledku

High strength alumina tapes prepared by gel-tape casting method

ŠŤASTNÝ, P.; CHLUP, Z.; ČÁSTKOVÁ, K.; TRUNEC, M.

Originální název

High strength alumina tapes prepared by gel-tape casting method

Anglický název

High strength alumina tapes prepared by gel-tape casting method

Druh

Článek WoS

Originální abstrakt

In the current work, high strength alumina (Al2O3) thin tapes were prepared by a novel gel-tape casting method. The water-based slurries were gelled by the polymerization of the epoxy monomers. Low viscosity slurries consisting of nanometer-sized alumina particles were prepared with a solid loading reaching 42 vol%. Sodium and ammonium polyacrylate dispersants were used for alumina particle dispersion and stabilization. The individual Al2O3 tapes reached a relative density of over 99.5% and a grain size between 1.1 and 1.3 mu m after pressureless sintering at 1450 degrees C. The biaxial strength of sintered samples was measured in the ball-on-three-balls setup and the values of characteristic Weibull strength up to 1400 MPa were obtained for as-sintered tapes with a thickness of about 190 mu m. The effect of sodium and ammonium-based polyacrylate dispersants on tape processing and properties of the Al2O3 tapes were investigated and explained.

Anglický abstrakt

In the current work, high strength alumina (Al2O3) thin tapes were prepared by a novel gel-tape casting method. The water-based slurries were gelled by the polymerization of the epoxy monomers. Low viscosity slurries consisting of nanometer-sized alumina particles were prepared with a solid loading reaching 42 vol%. Sodium and ammonium polyacrylate dispersants were used for alumina particle dispersion and stabilization. The individual Al2O3 tapes reached a relative density of over 99.5% and a grain size between 1.1 and 1.3 mu m after pressureless sintering at 1450 degrees C. The biaxial strength of sintered samples was measured in the ball-on-three-balls setup and the values of characteristic Weibull strength up to 1400 MPa were obtained for as-sintered tapes with a thickness of about 190 mu m. The effect of sodium and ammonium-based polyacrylate dispersants on tape processing and properties of the Al2O3 tapes were investigated and explained.

Klíčová slova

Tape casting; Water-based; High strength; Alumina; Ceramics

Klíčová slova v angličtině

Tape casting; Water-based; High strength; Alumina; Ceramics

Autoři

ŠŤASTNÝ, P.; CHLUP, Z.; ČÁSTKOVÁ, K.; TRUNEC, M.

Rok RIV

2021

Vydáno

01.03.2021

Nakladatel

ELSEVIER SCI LTD

Místo

OXFORD

ISSN

0272-8842

Periodikum

Ceramics International

Svazek

47

Číslo

5

Stát

Spojené království Velké Británie a Severního Irska

Strany od

6988

Strany do

6995

Strany počet

8

URL

https://www.sciencedirect.com/science/article/pii/S0272884220333642?via%3Dihub

BibTex

@article{BUT171144,
  author="Přemysl {Šťastný} and Zdeněk {Chlup} and Klára {Částková} and Martin {Trunec}",
  title="High strength alumina tapes prepared by gel-tape casting method",
  journal="Ceramics International",
  year="2021",
  volume="47",
  number="5",
  pages="6988--6995",
  doi="10.1016/j.ceramint.2020.11.048",
  issn="0272-8842",
  url="https://www.sciencedirect.com/science/article/pii/S0272884220333642?via%3Dihub"
}