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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 17    No. 5    October 2007

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Preparation of oriented linear copper fiber sintered felt and its performance
ZHOU Wei(周 伟), TANG Yong(汤 勇), WAN Zhen-ping(万珍平), LU Long-sheng(陆龙生), CHI Yong(池 勇), PAN Min-qiang(潘敏强)

School of Mechanical Engineering, South China University of Technology, Guangzhou 510640, China

Abstract: Long metal fibers were manufactured in horizontal lathe with a multi-tooth tool. Based on the coarse antler surface structure of copper fibers, a new sintering technology was put forward to manufacture a kind of oriented linear copper fiber sintered felt. The sintering mechanism of oriented linear copper fiber sintered felt was studied. Compared with sintered copper-wire felt, the characteristics of sintered copper-fiber felts were analyzed in details. Owing to the coarse antler surface structure of copper fibers, oriented linear copper-fiber felt was sintered under the condition of micro/nano scale range, and copper fibers easily bonded together in the sintering process. Microchannels with micro-scale coarse antler surface structure were constructed. These characters give oriented linear copper fiber felt some new merits: high filtration accuracy, high flow capability, low resistance loss, good capability to resistance pressure, stable and uniform pore, high specific surface area. The properties of oriented linear copper fiber sintered felt were analyzed.

 

Key words: multi-tooth tool; copper fiber; sintered felt; microchannel

ISSN 1672-7029
CN 43-1423/U

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