Nano Archive

Pressureless-sintering behavior of nanocrystalline ZrO2-Y2O3-Al2O3 system

Zhang, Yongsheng and Chen, Jianmin and Hu, Litian and Liu, Weimin (2006) Pressureless-sintering behavior of nanocrystalline ZrO2-Y2O3-Al2O3 system. Materials Letters, 60 (17-18). 2302 - 2305.

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ZrO2–Y2O3–Al2O3 nanocrystalline powders have been synthesized using chemical coprecipitation method. Nano-powders were compacted uniaxially and densified in a muffle furnace. Densification studies showed that a fully dense pellet of ZrO2(3Y) and a 99% relative density for 5 mol% Al2O3 doped ZrO2(3Y) were obtained after sintering at 1200 °C. The presence of Al2O3 inhibits grain growth and suppresses the densification process. Full densification and the maximum microhardness of 17.8 GPa were achieved for the ZrO2(3Y)/5 mol% Al2O3 composites sintered at 1250 °C.

Item Type:Article
Uncontrolled Keywords:ZrO2–Y2O3–Al2O3; Nanocomposites; Pressureless sintering; Hardness
Subjects:Material Science > Nanostructured materials
ID Code:6800
Deposited By:SPI
Deposited On:18 Jan 2010 10:18
Last Modified:18 Jan 2010 10:18

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