Synthesis of AlN porous-shell hollow spheres by a combustion route

Zhongqi Shi; Wanli Yang; Yongfeng Kang; Guanjun Qiao; Zhihao Jin

doi:10.1016/j.ceramint.2012.10.235

Synthesis of AlN porous-shell hollow spheres by a combustion route

Zhongqi Shi
, Wanli Yang
, Yongfeng Kang
, Guanjun Qiao
, Zhihao Jin

School of Materials Science and Engineering

Xi'an Jiaotong University

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

15 Scopus citations

Abstract

Aluminum nitride (AlN) porous-shell hollow spheres with diameters ranging from 2 to 3 μm and porous-shell thickness of about 120 nm were successfully prepared via a facile combustion synthesis route in the presence of polytetrafluoroethylene (PTFE), in which porous-shell was composed of a large number of irregular nanoparticles. These synthesized spheres were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) measurements. The possibility of the reactions of PTFE with Al particles was also investigated by thermogravimetry-differential scanning calorimetry (TG-DSC). It was found that PTFE was not only an active agent for the nitridation of Al particles, but also a structure-directing agent for the formation of this hollow structure. Based on the experimental results, a possible model for the growth of AlN porous-shell hollow spheres was proposed.

Original language	English
Pages (from-to)	4663-4667
Number of pages	5
Journal	Ceramics International
Volume	39
Issue number	4
DOIs	https://doi.org/10.1016/j.ceramint.2012.10.235
State	Published - May 2013

Keywords

Combustion synthesis
Hollow spheres
Microstructure
Powder technology

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10.1016/j.ceramint.2012.10.235

Cite this

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title = "Synthesis of AlN porous-shell hollow spheres by a combustion route",

abstract = "Aluminum nitride (AlN) porous-shell hollow spheres with diameters ranging from 2 to 3 μm and porous-shell thickness of about 120 nm were successfully prepared via a facile combustion synthesis route in the presence of polytetrafluoroethylene (PTFE), in which porous-shell was composed of a large number of irregular nanoparticles. These synthesized spheres were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) measurements. The possibility of the reactions of PTFE with Al particles was also investigated by thermogravimetry-differential scanning calorimetry (TG-DSC). It was found that PTFE was not only an active agent for the nitridation of Al particles, but also a structure-directing agent for the formation of this hollow structure. Based on the experimental results, a possible model for the growth of AlN porous-shell hollow spheres was proposed.",

keywords = "Combustion synthesis, Hollow spheres, Microstructure, Powder technology",

author = "Zhongqi Shi and Wanli Yang and Yongfeng Kang and Guanjun Qiao and Zhihao Jin",

year = "2013",

month = may,

doi = "10.1016/j.ceramint.2012.10.235",

language = "英语",

volume = "39",

pages = "4663--4667",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier Ltd",

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}

TY - JOUR

T1 - Synthesis of AlN porous-shell hollow spheres by a combustion route

AU - Shi, Zhongqi

AU - Yang, Wanli

AU - Kang, Yongfeng

AU - Qiao, Guanjun

AU - Jin, Zhihao

PY - 2013/5

Y1 - 2013/5

N2 - Aluminum nitride (AlN) porous-shell hollow spheres with diameters ranging from 2 to 3 μm and porous-shell thickness of about 120 nm were successfully prepared via a facile combustion synthesis route in the presence of polytetrafluoroethylene (PTFE), in which porous-shell was composed of a large number of irregular nanoparticles. These synthesized spheres were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) measurements. The possibility of the reactions of PTFE with Al particles was also investigated by thermogravimetry-differential scanning calorimetry (TG-DSC). It was found that PTFE was not only an active agent for the nitridation of Al particles, but also a structure-directing agent for the formation of this hollow structure. Based on the experimental results, a possible model for the growth of AlN porous-shell hollow spheres was proposed.

AB - Aluminum nitride (AlN) porous-shell hollow spheres with diameters ranging from 2 to 3 μm and porous-shell thickness of about 120 nm were successfully prepared via a facile combustion synthesis route in the presence of polytetrafluoroethylene (PTFE), in which porous-shell was composed of a large number of irregular nanoparticles. These synthesized spheres were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) measurements. The possibility of the reactions of PTFE with Al particles was also investigated by thermogravimetry-differential scanning calorimetry (TG-DSC). It was found that PTFE was not only an active agent for the nitridation of Al particles, but also a structure-directing agent for the formation of this hollow structure. Based on the experimental results, a possible model for the growth of AlN porous-shell hollow spheres was proposed.

KW - Combustion synthesis

KW - Hollow spheres

KW - Microstructure

KW - Powder technology

UR - https://www.scopus.com/pages/publications/84874648258

U2 - 10.1016/j.ceramint.2012.10.235

DO - 10.1016/j.ceramint.2012.10.235

M3 - 文章

AN - SCOPUS:84874648258

SN - 0272-8842

VL - 39

SP - 4663

EP - 4667

JO - Ceramics International

JF - Ceramics International

IS - 4

ER -

Synthesis of AlN porous-shell hollow spheres by a combustion route

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Keywords

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