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Open AccessArticle

Experimental Study on the Energy-Release Characteristics of Fine-Grained Fe/Al Energetic Jets under Impact Loading

by Qiang Li * and Ye Du
College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
*
Author to whom correspondence should be addressed.
Materials 2019, 12(20), 3317; https://doi.org/10.3390/ma12203317
Received: 22 August 2019 / Revised: 5 October 2019 / Accepted: 8 October 2019 / Published: 11 October 2019
(This article belongs to the Section Materials Chemistry)
The energy released by the active metal phase in fine-grained Fe/Al energetic materials enables the replacement of conventional materials in new types of weapons. This paper describes an experiment designed to study the energy-release characteristics of fine-grained Fe/Al energetic jets under impact loading. By means of dynamic mechanical properties analysis, the physical and chemical properties of Fe/Al energetic materials with specific content are studied, and the preparation process is determined. The energy-release properties of fine-grained Fe/Al jets subject to different impact conditions are studied based on experimental data, and energy-release differences are discussed. The results show that for fine-grained Fe/Al energetic materials to remain active and exhibit high strength, the highest sintering temperature is 550 °C. With increasing impact energy, the energy release of fine-grained Fe/Al energetic jets increases. At an impact-energy threshold of 121.1 J/mm2, the chemical reaction of the fine-grained Fe/Al energetic jets is saturated. The experimental data and microscopic analysis show that when the impact energy reaches the threshold, the energy efficiency ratio of Fe/Al energetic jets can reach 95.3%.
Keywords: fine-grained Fe/Al; energetic jets; impact loading; impact energy; energy release fine-grained Fe/Al; energetic jets; impact loading; impact energy; energy release
MDPI and ACS Style

Li, Q.; Du, Y. Experimental Study on the Energy-Release Characteristics of Fine-Grained Fe/Al Energetic Jets under Impact Loading. Materials 2019, 12, 3317.

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