Search academic texts

Information × Registration Number 0221U104294, 0120U101778 , R & D reports Title Physico-technical basis of synthesis of composite ceramics Ce:YAG/ Al2O3 for high-intensity white light sources popup.stage_title Head Doroshenko Andrii H., Кандидат технічних наук Registration Date 12-03-2021 Organization Institute of Single Crystals of the National Academy of Sciences of Ukraine popup.description2  A series of experimental samples of Ce:YAG/Al2O3 composite ceramics with a molar ratio of components of 0.75, c(Ce3+)=0.1 at.% and concentrations of MgO sintering additive from 0.05 to 0.3 wt.% were obtaining by the vacuum sintering method. The optical characteristics of the obtained composite ceramics were investigated. It is shown that the absorption band at the 457 nm wavelength corresponding to the absorption of Ce3+ ions decrease with increasing concentration of the sintering aid. In order to adapt the compaction methods of solid-state phosphors based on refractory oxide ceramics by slip casting, YAG powders were used as model systems. The rheological properties were investigated and the suspension composition of YAG nanopowder and DOLAPIX CE64 dispersant for slip casting were optimized. It is shown that the suspension water : solid phase : dispersant 49:50:1 wt. % demonstrates the properties of a Newtonian liquid. A hemispherical ceramic YAG blank with a diameter of 50 mm and an average thickness of 1.5 mm was obtained by the slip casting method followed by annealing. Product Description popup.authors Balabanov Anton E. Vorona Ihor О. Dobrotvorska Mariya V. Doroshenko Andrii G Kryzhanovska Oleksandra S Lytvynov Leonid A. Lyubitskaya Tamara B Matveevskaya Neonila А. Mateichenko Pavlo V. Parkhomenko Sergij V. Pletser Oleh О. Safronova Nadiia А. Tymoshenko Arsenii D. Tolmachev Olexander V. Chaika Mykhailo А. Shevela Yurii V. Shulichenko Olena M Yavetskiy Roman P. popup.nrat_date 2021-03-17 Close