Phase Stability of Yttria-Stabilized Zirconia with Dissolved Cerium and Neptunium Oxides Under Oxidizing and Reducing Atmospheres

Autor:	Tsumetaka Banba, Ken-ichi Kuramoto, Shinsuke Yamanaka, Masayoshi Uno, Hisayoshi Mitamura, Tadashi Yanagi, Hajime Kinoshita
Rok vydání:	2004
Předmět:	Materials science Dopant Neptunium Inorganic chemistry Sintering chemistry.chemical_element Cerium chemistry Phase (matter) Oxidizing agent Materials Chemistry Ceramics and Composites Cubic zirconia Yttria-stabilized zirconia
Zdroj:	Journal of the American Ceramic Society. 83:391-396
ISSN:	1551-2916 0002-7820
DOI:	10.1111/j.1151-2916.2000.tb01202.x
Popis:	Phase stability and effects of sintering atmosphere on the crystalline structure of Np-doped yttria-stabilized zirconia (YSZ) were evaluated in comparison with those same properties and conditions for Ce-doped YSZ. Different sintering atmospheres for Ce-doped YSZ led to differences in phase formation through reduction of the dopant from Ce4+ to Ce3+. On the other hand, YSZ specimens containing up to 40 mol% Np formed only a fluorite-structure phase regardless of sintering atmosphere. Yttria-stabilized zirconia thus seems to accommodate Np within a wide range of concentrations and to have excellent phase stability under both oxidizing and reducing atmospheres.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8ec626257a4d4831b816e732e60189ac https://doi.org/10.1111/j.1151-2916.2000.tb01202.x Zobrazit plný text záznamu Plný text