Rapid and Low-Cost Synthesis of Porous Silicon Powder from Mg2Si for Energetic Applications

Abstract

Porous silicon (Si) powder filled with sodium perchlorate oxidizer is a promising energetic material for advanced propellant and explosive formulations. Currently, porous Si powder is derived from p-type Si wafers etched in 3:1 concentrated hydrofluoric acid:ethanol solution followed by a liftoff procedure. This process is fundamentally expensive due to the cost of p-type Si wafers. An alternative method to generate porous Si powder from Mg2Si with similar properties to anodically etched porous Si is presented. Flame-speed measurements were performed and calculated to be comparable to anodically etched Si up to 977 m/s. Without the use of hydrofluoric acid or p-type wafers, this is a safer and cost-efficient way to produce porous Si for energetic applications.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2021
Accession Number
AD1147922

Entities

People

  • Dustin T. Abele
  • Katherine M. Price
  • Michael J. Wagner
  • Nathan A. Banek
  • Philip M Guerieri
  • Wayne A. Churaman

Organizations

  • Fibertek
  • George Washington University
  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Acids
  • Alcohols
  • Chemical Synthesis
  • Chemistry
  • Detectors
  • Electron Microscopy
  • Energetic Materials
  • Explosives
  • Hydrofluoric Acid
  • Lithium Ion Batteries
  • Material Degradation Processes
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Measurement
  • Military Research
  • Nanoparticles
  • Particle Size
  • Patent Applications
  • Scanning Electron Microscopy
  • Spectra
  • Three Dimensional

Fields of Study

  • Materials science

Readers

  • Rocket Propulsion.
  • Surface Coatings Technology.
  • Thin Film Deposition Science.