Title

Detonation Synthesis of Silicon Carbide Nanoparticles

Abstract

Detonation of explosives was used to synthesize silicon carbide nanoparticles. Polycarbosilane was added to a mixture of 1,3,5-Trinitro-1,3,5-triazinane and 2,4,6-trinitrotoluene, which was subsequently detonated in an enclosed chamber backfilled with inert gas. X-ray diffraction analysis of the detonation soot was consistent with the presence of crystalline silicon with a diamond cubic structure and cubic silicon carbide, along with amorphous material. Further analysis by transmission electron microscopy revealed the presence of crystalline angular particles. High resolution imaging showed that the particles contained numerous stacking faults along the [111] direction and had an interplanar spacing of 2.5 Å, both of which are characteristic of beta (cubic) silicon carbide. This is the first report of the detonation synthesis of silicon carbide by dissolving a silicon-containing precursor into an explosive composition.

Department(s)

Materials Science and Engineering

Second Department

Chemistry

Third Department

Mining Engineering

Comments

This research was supported by the Synthesis and Processing of Materials program in the Army Research Office as Short Term Innovative Research (STIR) project W911NF-17-1-0001 and project W911NF-18-1-0155.

Keywords and Phrases

A. Powders: Chemical Preparation; B. Electron Microscopy; D. SiC; Detonation

International Standard Serial Number (ISSN)

0272-8842

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2019 Elsevier Ltd and Techna Group S.r.l., All rights reserved.

Publication Date

01 Apr 2020

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