Effects ofSdifferent Al and W particle size of W-PTFE-Al composites onSthermal characteristics and dynamic response

Home > Archive>Volume 47, Issue 6, 2018 >1723-1728

Effects ofSdifferent Al and W particle size of W-PTFE-Al composites onSthermal characteristics and dynamic response
DOI:
                        
Author:
                        
Affiliation:School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing,School of Material Science and Engineering,Beijing Institute of Technology BIT,No Zhongguancun South Street,Beijing
Clc Number:O389
Fund Project:The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)

Article

Figures

Metrics

Reference

Cited by

Materials

Comments

Abstract:

This report shows that the variation of metallic particle size alters the combustion characteristics and dynamic response of W-PTFE-Al composites. Combustion test results show that the reaction energy of W(7μm)-PTFE(40μm)-Al(1μm) reached 4570.2J/g in argon environment and 9848.1J/g in oxygen environment, indicating fine aluminum and coarse tungsten contribute to the increase of reaction energy. Under dynamic loading, the deflagration time of all four kinds of W-PTFE-Al composites is longer than 500μs. With decreased Al particle size, the insensitivity of W-PTFE-Al composites to impact shows a decreasing tendency due to the absorbed critical energy before reaction decreases by 14.0%. With decreased W particles size, the insensitivity of W-PTFE-Al composites to impact enhances due to the absorbed critical energy before reaction increases by 34.8%. The dynamic compression results show that, the ultimate strength of W-PTFE-Al composites increases by 8.0% with Al particle size changing from 10μm to 1μm, but decreases by 10.2% with W particle size changing from 7μm to 100nm.

Reference

Cited by

Get Citation

[ZHANG Xinbo, LIU Jinxu, WANG Liu, LI Shukui, ZHANG Song, LAN Jia, WANG Yijin. Effects ofSdifferent Al and W particle size of W-PTFE-Al composites onSthermal characteristics and dynamic response[J]. Rare Metal Materials and Engineering,2018,47(6):1723~1728.]
DOI：[doi]

Copy

Article Metrics

Abstract:
PDF:
HTML:
Cited by:

History

Received:May 28,2016
Revised:January 20,2017
Adopted:February 21,2017
Online: September 06,2018
Published:

Home

Introduction

Editorial Board

Submission Guideline

Contact Us

中文

Get Citation

Article Metrics

History