Passivation process for superfine aluminum powders obtained by electrical explosion of wires

Abstract

The process of passivation of superfine aluminum powders (SFAPs) (a_s ≤ 100 nm), obtained with the electrical explosion of wires (EEW) method, has been studied. The passivation coatings of different nature (oxides, stearic acid and aluminum diboride) were covered on the particle surface. The process of passivation and analysis of passivated powders was studied by X-ray photoelectron spectroscopy (XPS), XRD, TEM, infrared spectroscopy (IR), mass spectrometry (MS), thermocouple method and bomb calorimetry. After the comprehensive testing of coatings, a model of stabilization of the superfine aluminum particles was suggested, explaining the anomalous high content of aluminum metal in the electroexplosive powders. The main characteristic of the model is a formation of charged structures, which prevent metal oxidation.

Original language	English
Pages (from-to)	57-67
Number of pages	11
Journal	Applied Surface Science
Volume	211
Issue number	1-4
DOIs	https://doi.org/10.1016/S0169-4332(03)00059-X
Publication status	Published - 30 Apr 2003

Keywords

Oxidation
Passivation
Superfine aluminum powders
Surface structure
Thin films

ASJC Scopus subject areas

Surfaces, Coatings and Films

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10.1016/S0169-4332(03)00059-X

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Kwon, Y. S., Gromov, A. A., Ilyin, A. P., & Rim, G. H. (2003). Passivation process for superfine aluminum powders obtained by electrical explosion of wires. Applied Surface Science, 211(1-4), 57-67. https://doi.org/10.1016/S0169-4332(03)00059-X

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title = "Passivation process for superfine aluminum powders obtained by electrical explosion of wires",

abstract = "The process of passivation of superfine aluminum powders (SFAPs) (as ≤ 100 nm), obtained with the electrical explosion of wires (EEW) method, has been studied. The passivation coatings of different nature (oxides, stearic acid and aluminum diboride) were covered on the particle surface. The process of passivation and analysis of passivated powders was studied by X-ray photoelectron spectroscopy (XPS), XRD, TEM, infrared spectroscopy (IR), mass spectrometry (MS), thermocouple method and bomb calorimetry. After the comprehensive testing of coatings, a model of stabilization of the superfine aluminum particles was suggested, explaining the anomalous high content of aluminum metal in the electroexplosive powders. The main characteristic of the model is a formation of charged structures, which prevent metal oxidation.",

keywords = "Oxidation, Passivation, Superfine aluminum powders, Surface structure, Thin films",

author = "Kwon, {Young Soon} and Gromov, {Alexander A.} and Ilyin, {Alexander P.} and Rim, {Geun Hie}",

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T1 - Passivation process for superfine aluminum powders obtained by electrical explosion of wires

AU - Kwon, Young Soon

AU - Gromov, Alexander A.

AU - Ilyin, Alexander P.

AU - Rim, Geun Hie

PY - 2003/4/30

Y1 - 2003/4/30

N2 - The process of passivation of superfine aluminum powders (SFAPs) (as ≤ 100 nm), obtained with the electrical explosion of wires (EEW) method, has been studied. The passivation coatings of different nature (oxides, stearic acid and aluminum diboride) were covered on the particle surface. The process of passivation and analysis of passivated powders was studied by X-ray photoelectron spectroscopy (XPS), XRD, TEM, infrared spectroscopy (IR), mass spectrometry (MS), thermocouple method and bomb calorimetry. After the comprehensive testing of coatings, a model of stabilization of the superfine aluminum particles was suggested, explaining the anomalous high content of aluminum metal in the electroexplosive powders. The main characteristic of the model is a formation of charged structures, which prevent metal oxidation.

AB - The process of passivation of superfine aluminum powders (SFAPs) (as ≤ 100 nm), obtained with the electrical explosion of wires (EEW) method, has been studied. The passivation coatings of different nature (oxides, stearic acid and aluminum diboride) were covered on the particle surface. The process of passivation and analysis of passivated powders was studied by X-ray photoelectron spectroscopy (XPS), XRD, TEM, infrared spectroscopy (IR), mass spectrometry (MS), thermocouple method and bomb calorimetry. After the comprehensive testing of coatings, a model of stabilization of the superfine aluminum particles was suggested, explaining the anomalous high content of aluminum metal in the electroexplosive powders. The main characteristic of the model is a formation of charged structures, which prevent metal oxidation.

KW - Oxidation

KW - Passivation

KW - Superfine aluminum powders

KW - Surface structure

KW - Thin films

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