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| Description
| - The microstructure of transparent YAG ceramics is investigated by stereology-based microscopic image analysis using SEM and FE-SEM micrographs. Interface densities, mean curvature integral densities and the related grain size measures (mean chord length and Jeffries size) have been determined with relative errors of 9-12 % for interface densities and mean curvature integral densities and 6-9 % for the corresponding grain size measures. A comparison of the two grain size measures confi rmed an excellent linear correlation between the Jeffries size and the mean chord length, with a mean-chordlength- to-Jeffries-size ratio of 0.928 +- 0.086. The overall range of average grain sizes is approx. 11-34 mým. It has been found that the sintering time has a signifi cant infl uence on the grain size, especially for YAG ceramics without Yb doping. When the sintering time is increased by a factor 8 (from 2 h to 16 h) the grain size increases by more than 200 % in undoped YAG ceramics, whereas the grain growth is much weaker in Yb-doped YAG ceramics (grain growth only 50-70 % for YAG ceramics with 5-10 at.% Yb). Thus it can be concluded that the Yb dopant acts as a grain growth inhibitor in YAG ceramics, at least for suffi ciently long sintering times (8 h and more). The infl uence of the sintering additive (tetraethyl orthosilicate TEOS) content on the grain size is negligible in the concentration range tested (0.3-0.5 wt.%).
- The microstructure of transparent YAG ceramics is investigated by stereology-based microscopic image analysis using SEM and FE-SEM micrographs. Interface densities, mean curvature integral densities and the related grain size measures (mean chord length and Jeffries size) have been determined with relative errors of 9-12 % for interface densities and mean curvature integral densities and 6-9 % for the corresponding grain size measures. A comparison of the two grain size measures confi rmed an excellent linear correlation between the Jeffries size and the mean chord length, with a mean-chordlength- to-Jeffries-size ratio of 0.928 +- 0.086. The overall range of average grain sizes is approx. 11-34 mým. It has been found that the sintering time has a signifi cant infl uence on the grain size, especially for YAG ceramics without Yb doping. When the sintering time is increased by a factor 8 (from 2 h to 16 h) the grain size increases by more than 200 % in undoped YAG ceramics, whereas the grain growth is much weaker in Yb-doped YAG ceramics (grain growth only 50-70 % for YAG ceramics with 5-10 at.% Yb). Thus it can be concluded that the Yb dopant acts as a grain growth inhibitor in YAG ceramics, at least for suffi ciently long sintering times (8 h and more). The infl uence of the sintering additive (tetraethyl orthosilicate TEOS) content on the grain size is negligible in the concentration range tested (0.3-0.5 wt.%). (en)
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| Title
| - Characterization of the microstructure of YAG ceramics via stereology-based image analysis
- Characterization of the microstructure of YAG ceramics via stereology-based image analysis (en)
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| skos:prefLabel
| - Characterization of the microstructure of YAG ceramics via stereology-based image analysis
- Characterization of the microstructure of YAG ceramics via stereology-based image analysis (en)
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| skos:notation
| - RIV/60461373:22310/14:43898228!RIV15-GA0-22310___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/60461373:22310/14:43898228
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - edge length density (triple junctions); mean curvature integral density; interface density (grain boundaries); grain size (mean chord length, Jeffries size); stereological; stereology; image analysis; microstructure; solid state lasers; Yb:YAG ceramics (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Pabst, Willi
- Hostaša, Jan
- Uhlířová, Tereza
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| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
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