The role of porosity in the phase composition evolution and texture formation at the friction surface of partially stabilized tetragonal zirconia ceramics

Autor:	G. Ya. Akimov, G. A. Marinin, E. V. Chaika
Rok vydání:	2006
Předmět:	Texture formation Surface (mathematics) Tetragonal crystal system Materials science Physics and Astronomy (miscellaneous) visual_art Phase (matter) visual_art.visual_art_medium Crystallite Ceramic Composite material Porosity Monoclinic crystal system
Zdroj:	Technical Physics Letters. 32:117-119
ISSN:	1090-6533 1063-7850
DOI:	10.1134/s1063785006020088
Popis:	The influence of porosity on the phase composition evolution and texture formation at the friction surface of yttria-partially-stabilized tetragonal zirconia polycrystalline (Y-TZP) ceramics (ZrO2 + 3 mol % Y2O3) in contact with steel was studied. The Y-TZP ceramic samples with a porosity of P = 0.33 and 3.3% were tested in a rod-on-disk configuration. The sample of higher porosity exhibited a much lower degree of wear. The friction wear was accompanied by irreversible phase transformations from the cubic to tetragonal and from the tetragonal to monoclinic structure. It is suggested that such irreversible phase transformations in porous ceramics favor the development of compressive stresses at the friction surface, which account for the observed behavior.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::81c4467c7ce5b5c844f76c5f252c0559 https://doi.org/10.1134/s1063785006020088 Zobrazit plný text záznamu Plný text ve formátu PDF