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Title: Synthesizing aluminum particles towards controlling electrostatic discharge ignition sensitivity

Aluminum particles were synthesized with shell thicknesses ranging from 2.7 to 8.3 nm and a constant diameter of 95 nm. These fuel particles were combined with molybdenum trioxide particles and the electrostatic discharge (ESD) sensitivity of the mixture was measured. Results show ignition delay increased as the alumina shell thickness increased. These results correlated with electrical resistivity measurements of the mixture which increased with alumina concentration. A model was developed using COMSOL for ignition of a single Al particle. The ignition delay in the model was consistent with the experimental results suggesting that the primary ESD ignition mechanism is joule heating.
Authors:
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Publication Date:
OSTI Identifier:
1120819
Report Number(s):
INL/JOU-14-31306
Journal ID: ISSN 0304-3886
DOE Contract Number:
DE-AC07-05ID14517
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Electrostatics; Journal Volume: 72; Journal Issue: 1
Research Org:
Idaho National Laboratory (INL)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
99 GENERAL AND MISCELLANEOUS Aluminum oxidation; electrical conductivity; Electrostatic discharge; Energetic materials; ignition delay; Joule heating