Spark Plasma Sintering of Nanocrystalline Cu and Cu-10 Wt Pct Pb Alloy

Sharma, Amit; Biswas, Krishanu; Basu, Bikramjit; Chakravarty, Dibyendu

doi:10.1007/s11661-010-0589-4

Cited by 32 publications

(16 citation statements)

References 20 publications

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“…The nanopores in the sintered specimens may originate from both the internal voids of the powder agglomerates and by the entrapment of gases during sintering [15,16,22]. Intra-agglomerate pores may only be eliminated if the agglomerates are fragmented during sintering; the other pores are mostly formed during sintering if the products of degassing are entrapped by the densifying material when the process is not properly conducted (i.e., the gas emission is prevented by the application of pressure) [16].…”

Section: Spark Plasma Sinteringmentioning

confidence: 99%

“…Many researchers have focused their attention on the spark plasma sintering behaviour of ultra-fine and nanosized copper [10][11][12][13][14][15][16], paying attention mainly to the evolution of the grain size and the microstructural characteristics during sintering. Less attention has been dedicated to the study of the influence of the powder oxygen content on the milling and sintering processes.…”

Section: Introductionmentioning

confidence: 99%

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Spark plasma sintering behaviour of copper powders having different particle sizes and oxygen contents

et al. 2016

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Section: Spark Plasma Sinteringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spark plasma sintering behaviour of copper powders having different particle sizes and oxygen contents

et al. 2016

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“…For instance, Pb melt is unable to wet Cu particles in nanostructured Cu-Pb system when the SPS temperature exceeds 350 °C. Such phenomenon decreases the densification of metals and alloys [31].…”

Section: Sps Temperaturementioning

confidence: 99%

“…For instance, formation of a liquid phase containing W, Ni, Fe, Cu, or Co in tungsten heavy alloys (WHAs) or melting Pb in Cu-Pb alloys results in higher densifications at elevated SPS temperatures, as shown in Fig. 2, due to wetting ability of the liquid phases and enhancement in diffusion [29][30][31]. However, de-wetting may occur in some metallic systems at specific SPS temperatures [31,32].…”

Section: Sps Temperaturementioning

confidence: 99%

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The densification behavior of metals and alloys during spark plasma sintering: A mini-review

Sovizi

Seraji

2019

Sci Sintering

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As of today, metals and alloys are widely utilized as structural, mechanical, electrical, and magnetic materials in every aspect of technology and industry. The complexity and diversity of metals applications emphasize the need for a new production method to quickly and easily manufacture metallic components. Spark plasma sintering as a new solidstate sintering method has been recently developed to respond to these needs. Up to now, numerous papers and researches have been published in the field of spark plasma sintering and its ability to manufacture metallic samples. Density is a significant property that has a great influence on the physical, mechanical, and functional properties of metallic parts. To the best of our knowledge, there is no concrete paper that reviews the densification behavior of metals and alloys during spark plasma sintering and the effect of its parameters on the density of metallic samples. As a result, this article dedicated to addressing this need. In this mini-review, after a short description of spark plasma sintering method, the effects of each sintering parameters on densification behavior of metals and alloys are studied, and possible physical and microstructural factors which have the effect of densification behavior of metallic samples at various sintering conditions are reviewed. Finally, the recent advances in finite element modeling, which study the temperature and stress inhomogeneity in the SPS process, have been reviewed in this paper.

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Thermodynamic analysis of the extension of solid solubility in copper‐lead immiscible system prepared by mechanical alloying

Xie

et al. 2021

Materialwissenschaft Werkst

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X‐ray diffraction analysis, scanning electron microscopy and thermodynamic calculations in the Miedema's model were used to study the extension of solid solubility in copper‐lead immiscible system prepared by mechanical alloying. The result shows that the nanocrystalline supersaturated solid solution formed during the alloying process. The Gibbs free energy change in this system during the formation of solid solution is calculated and shows to be positive, which means that a thermodynamic barrier exists for the formation of this alloy system in solid state. It has been found that the additional energy stored in nanocrystalline copper‐lead alloy during the alloying process as a result of crystallite size reduction and increased dislocation density, would be high enough to overcome the thermodynamic barrier in the formation of a solid solution.

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Spark Plasma Sintering of Nanocrystalline Cu and Cu-10 Wt Pct Pb Alloy

Cited by 32 publications

References 20 publications

Spark plasma sintering behaviour of copper powders having different particle sizes and oxygen contents

Spark plasma sintering behaviour of copper powders having different particle sizes and oxygen contents

The densification behavior of metals and alloys during spark plasma sintering: A mini-review

Thermodynamic analysis of the extension of solid solubility in copper‐lead immiscible system prepared by mechanical alloying

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