標題: | Characterization and composition evolution of multiple-phase nanoscaled ceramic powders produced by laser ablation |
作者: | Lin, SC Chen, SY Cheng, SY 交大名義發表 National Chiao Tung University |
關鍵字: | nanoparticle;laser ablation;multiphase;phase separation;far-infrared emission |
公開日期: | 20-十月-2004 |
摘要: | Nanosized ceramic powder was prepared by laser ablation under different atmospheres using a ceramic target composed of ZrO2, TiO2, ZnO and Al2O3. Physical characteristics and microstructure of nanoparticles, including particle morphology, phase transformation, powder compositions and far-infrared emissivity, have been investigated. The laser-ablated nanoparticles exhibit two kinds of particle size distribution with 7-15 (70-90%) and 40-100 nm (10-30%). Nanoparticles synthesized at lower laser fluences show poor crystallinity but rich Zn composition. While increasing laser fluence, better crystalline nanoparticles with rich Zr composition were obtained. It was found that both composition and morphology of nanoparticles change with laser fluence. The average far-infrared emissivity of the nanoparticles varies with crystallinity of nanoparticles. (C) 2004 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.powtec.2004.09.027 http://hdl.handle.net/11536/25747 |
ISSN: | 0032-5910 |
DOI: | 10.1016/j.powtec.2004.09.027 |
期刊: | POWDER TECHNOLOGY |
Volume: | 148 |
Issue: | 1 |
起始頁: | 28 |
結束頁: | 31 |
顯示於類別: | 會議論文 |