Nd:YAlO laser ceramics: Influence of the size of yttrium oxide particles on sintering.
- Resource Type
- Article
- Authors
- Kosyanov, D.; Baumer, V.; Yavetskiy, R.; Voznyy, V.; Kravchenko, V.; Kopylov, Yu.; Tolmachev, A.
- Source
- Crystallography Reports. Mar2015, Vol. 60 Issue 2, p299-305. 7p.
- Subject
- *NEODYMIUM lasers
*YTTRIUM oxides
*SINTERING
*CERAMICS
*SOIL densification
*YTTRIUM aluminum garnet
*CHEMICAL synthesis
- Language
- ISSN
- 1063-7745
The influence of the size of YO powder particles on the structure formation and densification of Nd:YAlO laser ceramics has been studied. It is shown that the use of 50- and 100-nm yttrium oxide particles makes it possible to synthesize single-phase yttrium aluminum garnet at temperatures of 1200 and 1500°C, respectively, whereas in the case of 5000-nm yttrium oxide particles 2-h exposure at a temperature of 1500°C yields only 80 wt % of the Nd:YAlO phase. Bulk swelling of pressed samples during sintering of 2.94YO-0.06NdO-5AlO powders with the size ratio of the initial particles R(AlO/YO) ∼ 5 is observed. The application of different-sized powders ( R ∼ 2.5) provides quantitative ratios between phases in the 3YO-5AlO system at which shrinkage in a temperature range of 20-1500°C is dominant. Laser ceramics 0-2 at % Nd:YAlO have been obtained by the solid-phase sintering of oxide powders ( R ∼ 2.5). The slope efficiency for 1 at % Nd:YAlO laser ceramics is found to be 33%. [ABSTRACT FROM AUTHOR]