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Production of Dispersion-Strengthened Cu-TiB2 Alloys by Ball-Milling and Spark-Plasma Sintering

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Abstract:

Dispersion-strengthened copper with TiB2 was produced by ball-milling and spark plasma sintering (SPS).Ball-milling was performed at a rotation speed of 300rpm for 30 and 60min in Ar atmosphere by using a planetary ball mill (AGO-2). Spark-plasma sintering was carried out at 650°C for 5min under vacuum after mechanical alloying. The hardness of the specimens sintered using powder ball milled for 60min at 300rpm increased from 16.0 to 61.8 HRB than that of specimen using powder mixed with a turbular mixer, while the electrical conductivity varied from 93.40% to 83.34%IACS. In the case of milled powder, hardness increased as milling time increased, while the electrical conductivity decreased. On the other hand, hardness decreased with increasing sintering temperature, but the electrical conductiviey increased slightly

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Periodical:

Materials Science Forum (Volumes 534-536)

Pages:

1489-1492

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.534-536.1489

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Online since:

January 2007

Authors:

Dae Hwan Kwon, Jong Won Kum, Thuy Dang Nguyen, Dina V. Dudina, Pyuck Pa Choi, Ji Soon Kim, Young Soon Kwon

Keywords:

Ball Milling, Cu-TiB2 Alloy, Spark Plasma Sintering (SPS)

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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