Supercritical fluid technology of nanoparticle coating for new ceramic materials

被引：27

作者：

Aymonier, C ^{[1
]}

Elissalde, C ^{[1
]}

Reveron, H ^{[1
]}

Weill, F ^{[1
]}

Maglione, M ^{[1
]}

Cansell, F ^{[1
]}

机构：

[1] Inst Chim Mat Condensee Bordeaux, F-33608 Pessac, France

来源：

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2005年 / 5卷 / 06期

关键词：

supercritical fluids; nanotechnology; coating; core-shell structures; BaTiO3@ Al2O3; ferroelectric materials; low dielectric losses;

D O I：

10.1166/jnn.2005.147

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This work highlights, for the first time, the coating of ferroelectric nanoparticles with a chemical fluid deposition process in supercritical fluids. BaTiO3 nanoparticles of about 50 nm are coated with a shell of a few nanometers of amorphous alumina and can be recovered as a dry powder for processing. The sintering of these core-shell nanoparticles gives access to a ceramic material with very interesting ferroelectric properties, in particular, dielectric losses below 1%.

引用

页码：980 / 983

页数：4

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