Graphite/Copper Composites with High Density

Yong Ping Jin; Bin Guo

doi:10.4028/www.scientific.net/AMM.723.475

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 723Graphite/Copper Composites with High Density

Graphite/Copper Composites with High Density

Abstract:

It is a difficult problem how to obtain the density of powder metallurgy products. Sintering billets had been prepared by mechanical milled graphite/copper compound powders firstly. Their microstructures had been analyzed by such means as scanning electron microscope (SEM) and optical microscope. Influence of technological parameters on relative density had also been investigated. The results show that sintering of non-milled powders are intensely affected by sintering temperature, contrary to mechanical milled compound powders. Hot pressed sintering under vacuum can promote densification effectively. By prolonging time, elevating temperature or pressure of hot pressed sintering, relative density of sintering billets can be increased accordingly. Under the same conditions, relative density decreases with mechanical milling time of compound powders.

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Periodical:

Applied Mechanics and Materials (Volume 723)

Pages:

475-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.723.475

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Online since:

January 2015

Authors:

Yong Ping Jin*, Bin Guo

Keywords:

Compound Powders, Graphite/Copper Composites, Hot Pressed Sintering under Vacuum, Mechanical Milling

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