Preparation and pressureless sintering of nanostructured zirconia-titania composite powders

• Autorzy: Zhang Y. , Hu L. , Hu T. , Chen J.
• Języki publikacji: EN

Abstrakty

EN

TiO2 doped yttria-zirconia nanosized powders were prepared by the coprecipitation method, with particle sizes of 10-15 nm. The effects of TiO2 content and calcining temperature on the phase structure and grain size of powders were studied. Nanopowders were compacted uniaxially and densified in a muffle furnace. Densification studies show that the dense pellet of yttria stabilized tetragonal zirconia polycrystal (Y-TZP)-TiO2 is obtained after sintering at 1200 °C. The presence of TiO2 inhibits grain growth and suppresses the densification process of pure Y-TZP. Ceramics with a mean grain size of 39 nm can be obtained based on the powder that has been doped with 30 mol % TiO2.

Słowa kluczowe

EN

ZrO2-Y2O3-TiO2; crystallization; nanocomposites; pressureless sintering

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2009
• Tom: Vol. 27, No. 1
• Strony: 89--96
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Zhang Y.

autor

Hu L.

autor

Hu T.

autor

Chen J.

• State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

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