Microstructure- transport property relation in yttria-doped zirconia

• Autorzy: Rizea A. , Chirlesan G. , Kusinski J. , Petot-Ervas G. , Petot C.

Warianty tytułu

PL

Relacja między mikrostrukturą i właściwościami dotyczącymi transportu masy w ZrO2 stabilizowanym YO2

• Konferencja: Advanced Materials and Technologies, AMT'2004 : XVII Physical Metallurgy and Materials Science Conference (XVII; 20-24.06.2004; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

Transmission electron microscopy, XPS analysis, electrical conductivity and diffusion measurements have allowed us to show the microstructure-transport property relation in ZrO2- 9.0mol% Y2O3 (YSZ) and Al2O3-YSZ composites. Samples with no detectable amorphous grain boundary precipitates show the highest grain boundary electrical conductivity (...gb) and oxygen diffusion coefficient (Do) values, which decrease in presence of alumina additions. On the contrary, alumina additions = or<2 mol%) lead to an increase of the transport properties of samples showing grain boundary glassy films. These results were attributed to a decrease of the grain boundary wettability by the glassy phase when the alumina amount increases. Furthermore, the same grain boundary activation energy found for the different samples show that only "clean" grain boundaries contribute to the transport processes.

Słowa kluczowe

PL

mikrostruktura; transport masy; tlenek cyrkonowy; tlenek itrowy

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Inżynieria Materiałowa
• Rocznik: 2004
• Tom: R. XXV, nr 3
• Strony: 430--433
• Opis fizyczny: Bibliogr. 9 poz., tab., rys.

Twórcy

autor

Rizea A.

• Academy of Mining and Metallurgy, Cracow

autor

Chirlesan G.

• Academy of Mining and Metallurgy, Cracow

autor

Kusinski J.

• Academy of Mining and Metallurgy, Cracow

autor

Petot-Ervas G.

• Laboratoire SPMS, Ecole Centrale Paris, Grande voie des Vignes, Chatenay-Malabry, France

autor

Petot C.

• Laboratoire SPMS, Ecole Centrale Paris, Grande voie des Vignes, Chatenay-Malabry, France

Bibliografia

• [1] Filal M., Petot C., Mokchah M., Chateau C., Charpentier J.L., Sol. St. Ionics, 80, 27-35 (1995)
• [2] Petot C., Filal M., Rizea A., Westmacott K., Laval J.Y., Lacour C., J.Eur.Cer.Soc., 18,1419-1428 (1998)
• [3] .Petot-Ervas G., Rizea A., Petot C., Ionics 3, 405- 411 (1997)
• [4] Petot-Ervas G., Petot C., Solid .State Ionics, 117, 27-39 (1999)
• [5] Rizea A., Chirlesan D., Petot C., Petot-Ervas G., Solid State Ionics, 146,341-353(2002)
• [6] Badwal S.P.S., Solid State lonics, 76, 67 (1995)
• [7] Solmon H., Chaumont J., Dolin C., Monty C., Cer. Transactions, Amer. Cer. Soc. 24, 175 (1992)
• [8] Sato H., Kikuchi R., J. Chem. Phys. 55 (2) 677-702 (1971)
• [9] Badwall S.P.S., Drennan J„ Soi. Stat. Ionics, 40:41, 869-873 (1990)