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Findings from University of Trent Has Provided New Data on Powder Technology (Spark plasma sintering of cryomilled copper powder)

July 8, 2014



By a News Reporter-Staff News Editor at Journal of Technology -- Current study results on Powder Technology have been published. According to news reporting originating from Trento, Italy, by VerticalNews correspondents, research stated, "The densification and sintering behaviour of a cryomilled copper powder (grain size of 17 +/- 2 nm and dislocation density of 6.26 +/- 0.04 x 10(16) m(-2)) were investigated and compared to those of an atomised copper powder with the same mean particle size in order to highlight the effect of the nanostructure on spark plasma sintering (SPS)."

Our news editors obtained a quote from the research from the University of Trent, "Oxygen and nitrogen contamination of the cryomilled powder gives rise to extensive degassing during SPS up to 400 degrees C. The cryomilled powder is more resistant to plastic deformation than the atomised one, but the huge density of dislocations and grain boundary activates sintering at low temperature. Densification is therefore promoted by deformation in the atomised powder and by sintering shrinkage in the cryomilled one."

According to the news editors, the research concluded: "As a consequence, in the SPS conditions investigated, the atomised specimen is densified but not sintered, while the cryomilled one is effectively sintered and consequently densified."

For more information on this research see: Spark plasma sintering of cryomilled copper powder. Powder Metallurgy, 2013;56(5):420-426. Powder Metallurgy can be contacted at: Maney Publishing, Ste 1C, Josephs Well, Hanover Walk, Leeds LS3 1AB, W Yorks, England. (Springer - www.springer.com; Powder Metallurgy - www.springerlink.com/content/1068-1302/)

The news editors report that additional information may be obtained by contacting S. Diouf, Univ Trent, Trento, Italy. Additional authors for this research include C. Menapace, M. D'Incau, A. Molinari and G. Ischia.

Keywords for this news article include: Italy, Trento, Europe, Powder Technology

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Source: Journal of Technology


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