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- Title
ENHANCED ENERGETIC PERFORMANCE OF POLYVINYLIDENE FLUORIDE-COATED ZIRCONIUM PARTICLE.
- Authors
WON YOUNG HEO; SUNG HWA BAE; INJOON SON
- Abstract
In this study, energetic behaviors of polyvinylidene fluoride (PVDF)-coated zirconium (Zr) powders were investigated using thermogravimetric analyzer-differential scanning calorimetry (TGA-DSC). PVDF-coated Zr powder had 1.5 times higher heat flow than ZrO2-passivated Zr powder. PVDF-coated Zr powder had a Zr-F compound formed on its surface by its strong chemical bond. This compound acted as an oxidation-protecting layer, providing an efficient combustion path to inner pure Zr particle while thermal oxidation was progressing at the same time. PVDF coating layers also made thermal reaction start at a lower temperature than ZrO2-passivated Zr powder. It was obtained that the surface PVDF coating layer evaporated at approximately 673 K, but the surface oxide layer fully reacted at approximately 923 K by DSC analysis. Hence, Zr powders showed enhanced energetic properties by the PVDF-coated process.
- Subjects
ZIRCONIUM; CHEMICAL bonds; SURFACE coatings; LOW temperatures; POLYVINYLIDENE fluoride; ZIRCONIUM compounds
- Publication
Archives of Metallurgy & Materials, 2021, Vol 66, Issue 3, p725
- ISSN
1733-3490
- Publication type
Article
- DOI
10.24425/amm.2021.136369