4.7 Article

Effect of loading schedule on densification of MgAl2O4 spinel during spark plasma sintering (SPS) processing

Journal

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 32, Issue 10, Pages 2303-2309

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2012.02.016

Keywords

Spark plasma sintering; Microstructure-final; Porosity; Optical properties; Spinel

Funding

  1. Amada Foundation [AF-2008016]
  2. Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan. [19760497, 22560675, 21360328]
  3. World Premier International Research Center Initiative (WPI Initiative), MEXT, Japan
  4. Grants-in-Aid for Scientific Research [21360328, 22560675, 19760497] Funding Source: KAKEN

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An increase in the loading temperature during SPS processing can reduce the residual porosity in a spine( and thus attain a high transmission even at the high heating rate of 100 degrees C/min. This suggests that load controlling is an important factor as well as the heating rate and sintering temperature. Although the transmission is lower than the maximum value attained at the low heating rates of <10 degrees C/min, the loading schedule optimization enables utilization of the high heating rate processing that is a primary advantage of the SPS technique. (C) 2012 Elsevier Ltd. All rights reserved.

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