Characterization and composition evolution of multiple-phase nanoscaled ceramic powders produced by laser ablation

Shih Chin Lin; San-Yuan Chen; Syh Yuh Cheng

doi:10.1016/j.powtec.2004.09.027

Characterization and composition evolution of multiple-phase nanoscaled ceramic powders produced by laser ablation

Shih Chin Lin, San-Yuan Chen, Syh Yuh Cheng

Department of Materials Science and Engineering

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

2 Scopus citations

Abstract

Nanosized ceramic powder was prepared by laser ablation under different atmospheres using a ceramic target composed of ZrO ₂, TiO ₂, ZnO and Al ₂O ₃. 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.

Original language	English
Pages (from-to)	28-31
Number of pages	4
Journal	Powder Technology
Volume	148
Issue number	1
DOIs	https://doi.org/10.1016/j.powtec.2004.09.027
State	Published - 20 Oct 2004

Keywords

Far-infrared emission
Laser ablation
Multiphase
Nanoparticle
Phase separation

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title = "Characterization and composition evolution of multiple-phase nanoscaled ceramic powders produced by laser ablation",

abstract = "Nanosized ceramic powder was prepared by laser ablation under different atmospheres using a ceramic target composed of ZrO 2, TiO 2, ZnO and Al 2O 3. 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.",

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AU - Chen, San-Yuan

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N2 - Nanosized ceramic powder was prepared by laser ablation under different atmospheres using a ceramic target composed of ZrO 2, TiO 2, ZnO and Al 2O 3. 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.

AB - Nanosized ceramic powder was prepared by laser ablation under different atmospheres using a ceramic target composed of ZrO 2, TiO 2, ZnO and Al 2O 3. 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.

KW - Far-infrared emission

KW - Laser ablation

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