Dynamic compressive behavior of PTFE/Cu composite materials

TANG Xuezhi; WANG Zhijun; ZHANG Xuepeng; XU Yongjie

doi:10.19591/j.cnki.cn11-1974/tf.2021080008

Volume 42 Issue 2

Apr. 2024

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TANG Xuezhi, WANG Zhijun, ZHANG Xuepeng, XU Yongjie. Dynamic compressive behavior of PTFE/Cu composite materials[J]. Powder Metallurgy Technology, 2024, 42(2): 153-158, 164. doi: 10.19591/j.cnki.cn11-1974/tf.2021080008

Citation:

TANG Xuezhi, WANG Zhijun, ZHANG Xuepeng, XU Yongjie. Dynamic compressive behavior of PTFE/Cu composite materials[J]. Powder Metallurgy Technology, 2024, 42(2): 153-158, 164. doi: 10.19591/j.cnki.cn11-1974/tf.2021080008

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Dynamic compressive behavior of PTFE/Cu composite materials

doi: 10.19591/j.cnki.cn11-1974/tf.2021080008

TANG Xuezhi^{1, 2},
WANG Zhijun^{1
,
,},
ZHANG Xuepeng¹,
XU Yongjie^{1, 2}

1.
College of Mechatronic Engineering, North University of China, Taiyuan 030051, China
2.
Chongqing Hongyu Precision Industrial Co., Ltd., Chongqing 402760, China

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Corresponding author: E-mail: wzj@nuc.edu.cn
Received Date: 2021-11-02
Publish Date: 2024-04-28

Abstract

Abstract

Six kinds of polytetrafluoroethylene (PTFE)/Cu materials with the different Cu contents were prepared by cold isostatic pressing and cold press sintering, respectively. The effects of density and preparation method on the dynamic mechanical properties of PTFE/Cu materials were studied by split Hopkinson bar testing (SHPB). The results show that the density of the cold press sintered specimen decreases due to the longitudinal expansion during the cold press sintering process, and a metal film is formed on the specimen surface. The dynamic mechanical properties of the cold press sintered specimen are better than that of the cold isostatic pressed specimen. The PTFE crystals in the cold press sintered PTFE/Cu materials are better developed, and the PTFE encapsulation force on the Cu particles is greater, resulting in the greater interfacial bonding force and improving the mechanical properties of the cold press sintered PTFE/Cu materials.
- PTFE/Cu composite materials,
- cold isostatic pressing,
- cold press sintering,
- dynamic compression properties

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References(20)

References

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