Publication detail

Role of conduction and convection heat transfer during rapid crack-free sintering of bulk ceramic with low thermal conductivity

SALAMON, D. KALOUSEK, R. ZLÁMAL, J. MACA, K.

Original Title

Role of conduction and convection heat transfer during rapid crack-free sintering of bulk ceramic with low thermal conductivity

Type

journal article in Web of Science

Language

English

Original Abstract

Rapid sintering is nowadays a domain of novel methods such as spark plasma sintering (SPS) or flash sintering. These methods deal with special heating and, therefore, it is difficult to describe obtained results by a conventional pressure-less sintering mechanism. This work deals with specially designed pressure-less rapid sintering furnace, which allows heating rates on level of hundreds degrees per minute. Sample with volume over 30cm3 from low thermally conductive tetragonal zirconia stabilized with 3mol% Y2O3 (3Y-TZP) was rapidly sintered to relative density of 86% without crack formation. Experimental data were used for numerical calculations of conduction/convection heat transfer. Obtained results reveal that the maximum temperature in the sample does not exceed 1200°C if only heating by conduction and convection is considered. Our results indicate that during rapid sintering of low thermally conductive materials radiation heat transfer is dominant in both conventional and SPS conditions

Keywords

Heat transfer; Numerical calculation; Rapid sintering; Zirconia ceramics

Authors

SALAMON, D.; KALOUSEK, R.; ZLÁMAL, J.; MACA, K.

Released

1. 9. 2016

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

36

Number

12

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2955

Pages to

2959

Pages count

5

URL

http://www.sciencedirect.com/science/article/pii/S095522191530248X

BibTex

@article{BUT120147,
  author="David {Salamon} and Radek {Kalousek} and Jakub {Zlámal} and Karel {Maca}",
  title="Role of conduction and convection heat transfer during rapid crack-free sintering of bulk ceramic with low thermal conductivity",
  journal="Journal of the European Ceramic Society",
  year="2016",
  volume="36",
  number="12",
  pages="2955--2959",
  doi="10.1016/j.jeurceramsoc.2015.11.034",
  issn="0955-2219",
  url="http://www.sciencedirect.com/science/article/pii/S095522191530248X"
}