Publication detail

High strength alumina tapes prepared by gel-tape casting method

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

Original Title

High strength alumina tapes prepared by gel-tape casting method

Type

journal article in Web of Science

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

1. 3. 2021

Publisher

ELSEVIER SCI LTD

Location

OXFORD

ISBN

0272-8842

Periodical

Ceramics International

Year of study

47

Number

5

State

United Kingdom of Great Britain and Northern Ireland

Pages from

6988

Pages to

6995

Pages count

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"
}