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Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size
Joint Authors
Fang, Xiang
Wu, Jia-xiang
Gao, Zhen-ru
Wang, Huai-xi
Huang, Jun-yi
Wu, Shuang-zhang
Li, Yu-chun
Source
Advances in Materials Science and Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-03-14
Country of Publication
Egypt
No. of Pages
10
Abstract EN
Al-PTFE (aluminum-polytetrafluoroethylene) serves as one among the most promising reactive materials (RMs).
In this work, six types of Al-PTFE composites with different Al particle sizes (i.e., 50 nm, 1∼2 μm, 6∼7 μm, 12∼14 μm, 22∼24 μm, and 32∼34 μm) were prepared, and quasistatic compression and drop weight tests were conducted to characterize the mechanical properties and reaction characteristics of Al-PTFE composites.
The reaction phenomenon and stress-strain curves were recorded by a high-speed camera and universal testing machine.
The microstructure of selected specimens was anatomized through adopting a scanning electron microscope (SEM) to correlate the mesoscale structural characteristics to their macroproperties.
As the results indicated, in the case of quasistatic compression, the strength of the composites was decreased (the yield strength falling from 22.7 MPa to 13.6 MPa and the hardening modulus declining from 33.3 MPa to 25 MPa) with the increase of the Al particle size.
The toughness rose firstly and subsequently decreased and peaked as 116.42 MJ/m3 at 6∼7 μm.
The reaction phenomenon occurred only in composites with the Al particle size less than 10 μm.
In drop weight tests, six types of specimens were overall reacted.
As the Al particle size rose, the ignition energy of the composites enhanced and the composites turned out to be more insensitive to reaction.
In a lower strain rate range (10−2·s−1∼102·s−1), Al-PTFE specimens take on different mechanical properties and reaction characteristics in the case of different strain rates.
The formation of circumferential open cracks is deemed as a prerequisite for Al-PTFE specimens to go through a reaction.
American Psychological Association (APA)
Wu, Jia-xiang& Fang, Xiang& Gao, Zhen-ru& Wang, Huai-xi& Huang, Jun-yi& Wu, Shuang-zhang…[et al.]. 2018. Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size. Advances in Materials Science and Engineering،Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1120205
Modern Language Association (MLA)
Wu, Jia-xiang…[et al.]. Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size. Advances in Materials Science and Engineering No. 2018 (2018), pp.1-10.
https://search.emarefa.net/detail/BIM-1120205
American Medical Association (AMA)
Wu, Jia-xiang& Fang, Xiang& Gao, Zhen-ru& Wang, Huai-xi& Huang, Jun-yi& Wu, Shuang-zhang…[et al.]. Investigation on Mechanical Properties and Reaction Characteristics of Al-PTFE Composites with Different Al Particle Size. Advances in Materials Science and Engineering. 2018. Vol. 2018, no. 2018, pp.1-10.
https://search.emarefa.net/detail/BIM-1120205
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1120205