Effect of Compaction Pressure and Sintering Time on the Properties of Sintered Cu-10Sn Bronze

Abstract:

Bronze-based composite materials are well known for use as friction materials. They are produced by powder metallurgy techniques from bronze powder, which acts as a matrix, and various friction modifying additives. The objective of this work was to study the effect of compaction pressure and sintering time on the properties of the unmodified bronze matrix. The bronze powder used was prealloyed with a composition of Cu-10Sn. The specimens were pressed by uniaxial die compaction with pressures of 282 to 339 MPa. The sintering experiments were conducted in an alumina tube furnace at 800 °C with sintering times of 30, 45, and 60 min under a vacuum pressure of 2.25x10^-2 Torr. From the results, it was found that the density of the samples increased with increasing compaction pressure. A microstructural examination of the samples for the different sintering times showed them to look very similar. Finally, the highest sintered density of 7.30 g/cm³ was obtained at 800 °C for 60 min.

• Periodical: Key Engineering Materials (Volume 751)
• Pages: 37-41
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.751.37
• Online since: August 2017
• Authors: Narut Nakrod*, Ryan C. McCuiston, Chiraporn Auechalitanukul
• Keywords: Bronze, Porosity, Powder metallurgy, Sintering

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