Effect of complex Si4++Mg2+ additive on sintering and properties of undoped YAG ceramics. Issue 13 (October 2022)

• Record Type: Journal Article
• Authors: Vorona, I.O.; Yavetskiy, R.P.; Parkhomenko, S.V.; Doroshenko, A.G.; Kryzhanovska, O.S.; Safronova, N.A.; Timoshenko, A.D.; Balabanov, A.E.; Tolmachev, A.V.; Baumer, V.N.
• Is Part Of: Journal of the European Ceramic Society. Volume 42:Issue 13(2022)
• Page Start: 6104
• Page End: 6109
• Publication Date: 2022-10
• Subjects: Transparent ceramics -- YAG -- Si4+ -- Mg2+ -- Sintering aids; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2022.05.017
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: The paper is devoted to studying of Si 4+ +Mg 2+ complex additive for obtaining transparent YAG ceramics for laser applications. Ceramics were fabricated by reactive vacuum sintering of commercial Y2 O3, Al2 O3 powders taken in a stoichiometric mixture with TEOS and MgO as sintering aids. Microstructure and optical properties of YAG:Si 4+, Mg 2+ ceramics were investigated as a function of the Si 4+ /Mg 2+ ratio. It was found that the influence of complex additive does not correspond to the direct superposition of known Si 4+ - and Mg 2+ -induced sintering mechanisms and involves interaction between Si 4+ and Mg 2+ ions during sintering. It was shown that CSi /CMg > 1 provides more effective pore elimination and uniform microstructure when CSi /CMg < 1 gives more intense inhibition of grain grown which may be important for scaling the size of ceramics.