Effect of Y2O3 additive on morphology and phase composition of zirconia solid solutions. Issue 9 (1st May 2022)

• Record Type: Journal Article
• Authors: Wilk, Agnieszka; Wojteczko, Kamil; Gajewska, Marta; Lach, Radosław; Jeleń, Piotr; Sitarz, Maciej; Haberko, Krzysztof; Pędzich, Zbigniew
• Is Part Of: Ceramics international. Volume 48:Issue 9(2022)
• Page Start: 13055
• Page End: 13062
• Publication Date: 2022-05-01
• Subjects: Yttria zirconia solid solutions -- Hydrothermal crystallization; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.01.180
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Zirconia and zirconia-yttria solid solution powders within the range of 0–8 mol.% Y2 O3 concentration were precipitated and crystallized in NaOH aqueous solution under hydrothermal conditions. The resulting powders were characterized using X-ray diffraction, specific surface area measurements and infrared and Raman spectroscopy. It has been found that morphology and phase composition of the obtained powders are strongly influenced by the Y2 O3 concentration in the system. Low yttria content of 0 and 1 mol. % leads to the elongated particles with monoclinic symmetry. Moreover, an order of magnitude smaller isometric particles appear when Y2 O3 content reaches 2 mol.% and more. They are characterized by tetragonal or even cubic symmetry. It has been shown that Y2 O3 forms solid solution in each zirconia polymorph, i.e. monoclinic, tetragonal and cubic symmetry one.