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

Yongsheng Zhang; Jianmin Chen; Litian Hu; Weimin Liu

doi:10.1016/j.matlet.2005.12.129

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

Yongsheng Zhang, Jianmin Chen, Litian Hu, Weimin Liu

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	2302-2305
Number of pages	4
Journal	Materials Letters
Volume	60
Issue number	17-18
DOIs	https://doi.org/10.1016/j.matlet.2005.12.129
State	Published - Aug 2006
Externally published	Yes

Keywords

Hardness
Nanocomposites
Pressureless sintering
ZrO-YO-AlO

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10.1016/j.matlet.2005.12.129

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title = "Pressureless-sintering behavior of nanocrystalline ZrO2-Y2O3-Al2O3 system",

abstract = "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.",

keywords = "Hardness, Nanocomposites, Pressureless sintering, ZrO-YO-AlO",

author = "Yongsheng Zhang and Jianmin Chen and Litian Hu and Weimin Liu",

year = "2006",

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doi = "10.1016/j.matlet.2005.12.129",

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volume = "60",

pages = "2302--2305",

journal = "Materials Letters",

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TY - JOUR

T1 - Pressureless-sintering behavior of nanocrystalline ZrO2-Y2O3-Al2O3 system

AU - Zhang, Yongsheng

AU - Chen, Jianmin

AU - Hu, Litian

AU - Liu, Weimin

PY - 2006/8

Y1 - 2006/8

N2 - 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.

AB - 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.

KW - Hardness

KW - Nanocomposites

KW - Pressureless sintering

KW - ZrO-YO-AlO

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U2 - 10.1016/j.matlet.2005.12.129

DO - 10.1016/j.matlet.2005.12.129

M3 - 文章

AN - SCOPUS:33747374855

SN - 0167-577X

VL - 60

SP - 2302

EP - 2305

JO - Materials Letters

JF - Materials Letters

IS - 17-18

ER -

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

Abstract

Keywords

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