Abstract
Interdiffusion between the perovskite CaTiO3 and SrTiO 3 diffusion couple was investigated in an annealing method using 24-GHz MMW irradiation as the heating source. Interdiffusion was enhanced by MMW irradiation, and the apparent activation energy for interdiffusion decreased 54%, compared with conventional furnace heating. The intrinsic diffusions for both Ca2+ and Sr2+ were also enhanced, although their relative degrees of enhancement differed, partly as a result of differences in MMW absorptivity between the two ceramics. The observed isothermal diffusion enhancement could be ascribed to a nonthermal effect, apart from the differential degree of enhancement between the transport species.
Original language | English |
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Pages (from-to) | 825-829 |
Number of pages | 5 |
Journal | Materials Chemistry and Physics |
Volume | 139 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - May 15 2013 |
Keywords
- Annealing
- Ceramics
- Diffusion
- Oxides
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics