Effect of heating rates on TG-DTA results of aluminum nanopowders prepared by laser heating evaporation

被引：29

作者：

Chen, L. ^{[1
]}

Song, W. L. ^{[1
,2
]}

Lv, J. ^{[1
]}

Wang, L. ^{[2
]}

Xie, C. S. ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Analyt & Test Ctr, Wuhan 430074, Peoples R China

来源：

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2009年 / 96卷 / 01期

关键词：

aluminum; energetic materials; nanopowders; reactivity; TG-DTA; AMMONIUM-PERCHLORATE; THERMAL-PROPERTIES; METAL POWDERS; EXPLOSION; COMBUSTION;

D O I：

10.1007/s10973-008-9374-7

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Aluminum (Al) nanopowders with mean diameter of about 50 nm and passivated by alumina (Al2O3) coatings were prepared by an evaporation route: laser heating evaporation. Thermal properties of the nanopowders were investigated by simultaneous thermogravimetric-differential thermal analysis (TG-DTA) in dry oxygen environment, using a series of heating rates (5, 10, 20, 30, 50 and 90A degrees C min(-1)) from room temperature to 1200A degrees C. With the heating rates rise, the onset and peak temperatures of the oxidation rise, and the conversion degree of Al to Al2O3 varies. However, the specific heat release keeps relatively invariant and has an average value of 18.1 kJ g(-1). So the specific heat release is the intrinsic characteristic of Al nanopowders, which can represent the ability of energy release.

引用

页码：141 / 145

页数：5

共 19 条

[1] Experimental studies on the burning of coated and uncoated micro and nano-sized aluminium particles [J].

Bocanegra, P. Escot ;

Chauveau, C. ;

Goekalp, I. .

AEROSPACE SCIENCE AND TECHNOLOGY, 2007, 11 (01) :33-38

[2] Thermal decomposition of ammonium perchlorate activated via addition of Nio nanocrystals [J].

Chen, L. -J ;

Li, G. -S. ;

Qi, P. ;

Li, L. -P. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2008, 92 (03) :765-769

[3] Characterization and thermal properties of carbon-coated aluminum nanopowders prepared by laser-induction complex heating in methane [J].

Guo, Liangui ;

Song, Wuhn ;

Xie, Changsheng ;

Zhang, Xiaota ;

Hu, Mulin .

MATERIALS LETTERS, 2007, 61 (14-15) :3211-3214

[4] Reactivity of aluminum powders [J].

Il'in, AP ;

Gromov, AA ;

Yablunovskii, GV .

COMBUSTION EXPLOSION AND SHOCK WAVES, 2001, 37 (04) :418-422

[5]

ILYIN AP, 2002, SHOCK WAVES, V38, P665

[6] Productions of ultra-fine powders and their use in high energetic compositions [J].

Ivanov, YF ;

Osmonoliev, MN ;

Sedoi, VS ;

Arkhipov, VA ;

Bondarchuk, SS ;

Vorozhtsov, AB ;

Korotkikh, AG ;

Kuznetsov, VT .

PROPELLANTS EXPLOSIVES PYROTECHNICS, 2003, 28 (06) :319-333

[7] Thermal characterization of passivated nanometer size aluminium powders [J].

Jones, DEG ;

Brousseau, P ;

Fouchard, RC ;

Turcotte, AM ;

Kwok, QSM .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2000, 61 (03) :805-818

[8] Hazard characterization of aluminum nanopowder compositions [J].

Jones, DEG ;

Turcotte, R ;

Fouchard, RC ;

Kwok, QSM ;

Turcotte, AM ;

Abdel-Qader, Z .

PROPELLANTS EXPLOSIVES PYROTECHNICS, 2003, 28 (03) :120-131

[9] Electric explosion of wires as a method for preparation of nanopowders [J].

Kotov, YA .

JOURNAL OF NANOPARTICLE RESEARCH, 2003, 5 (5-6) :539-550

[10] Estimation of the reactivity of aluminum superfine powders for energetic applications [J].

Kwon, YS ;

Moon, JS ;

Ilyin, AP ;

Gromov, AA ;

Popenko, EM .

COMBUSTION SCIENCE AND TECHNOLOGY, 2004, 176 (02) :277-288

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