Reduced activation energy for grain growth in nanocrystalline yttria-stabilized zirconia

被引：144

作者：

Shukla, S

Seal, S

Vij, R

Bandyopadhyay, S

机构：

[1] Univ Cent Florida, Adv Mat Proc & Anal Ctr, AMPAC, Orlando, FL 32816 USA

[2] Univ Cent Florida, Mech Mat Aerosp Engn Dept, MMAE, Orlando, FL 32816 USA

[3] Univ New S Wales, Sch Mat Sci & Engn, Kensington, NSW 2052, Australia

来源：

NANO LETTERS | 2003年 / 3卷 / 03期

关键词：

D O I：

10.1021/nl0259380

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Nanocrystalline (similar to15-20 nm) 3 mol % yttria-stabilized zirconia (3YSZ) powder is synthesized via sol-gel technique. A reduced activation energy value of similar to13.0 +/- 0.9 kJ/mol is observed for grain growth in nano-3YSZ powder, within the calcination temperature range of 400-1200 degreesC, which is much lower than that (580 kJ/mol) reported for submicron/micron-sized 3YSZ. This is attributed to large oxygen-ion vacancy concentration in nano-3YSZ.

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页码：397 / 401

页数：5

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