Characterization of Cu6Sn5 intermetallic powders produced by water atomization and powder heat treatment

Tongsri, Ruangdaj; Yotkaew, Thanyaporn; Krataitong, Rungtip; Wila, Pongsak; Sir-on, Autcharaporn; Muthitamongkol, Pennapa; Tosangthum, Nattaya

doi:10.1016/j.matchar.2013.09.013

Cited by 9 publications

(5 citation statements)

References 54 publications

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“…It can be clearly seen that, after long-time heat treatment, the powders consisting of Sn, Cu 3 Sn, and Cu 6 Sn 5 phases were all transformed into the Cu 6 Sn 5 phase, which was consistent with the fact that the nominal composition of Cu:Sn in the ingot alloy was 6:5 (at.%). Moreover, the cooling rate of the powders in the furnace was slower than 20 °C/min, such that η–η’ transformation occurred [25], which was also reported in the literature [27].…”

Section: Resultsmentioning

confidence: 83%

“…As the temperature dropped to the peritectic temperature (T P ), the η phase (η Cu 6 Sn 5 ) precipitated on the surface of the ε phase, which was confirmed by the results of unidirectional solidification [26]. Meanwhile, vertical growth along the surface of the Cu 3 Sn phase also occurred because of the peritectic reaction between the ε phase and the liquid Sn [27]. At this moment, the liquid composition was near C LP and there was three-phase (liquid, ε, and η) coexistence in the system.…”

Section: Resultsmentioning

confidence: 92%

“…Meanwhile, the growth of the η phase was necessary for it to get access to the undercooled liquid. A secondary η crystal nucleus grew further at the interface of the ε phase, as well as at the three-phase (ε + η + liquid) junctions [27]; however, the newly formed ε phase appeared only between the η crystals because the primary ε phase contacting the liquid would have been consumed. The Cu 6 Sn 5 wrapper grew at the expense of the primary Cu 3 Sn phase, which demonstrated the occurrence of the peritectic reaction below the peritectic temperature.…”

Section: Resultsmentioning

confidence: 99%

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Size-Dependent Phase Transformation during Gas Atomization Process of Cu–Sn Alloy Powders

Pan

Liu

et al. 2019

Materials

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For binary element atomization, it is essential to investigate the phase transformation from liquid to solid as a functions of the droplet sizes, as well as the reaction competitiveness, during gas atomizing solidification of their nuclei. In the present work, a series of phase transformations of undercooled Cu (60.9 wt.%)/Sn droplets were analyzed when atomized by pressure gas. The results indicated that the microstructures of the obtained powders and their morphologies were highly relevant to the droplet size. According to the phase characteristics analyzed by the microstructural observations in combination with the transient nucleation theory, powders with sizes from 10 to 100 μm were divided into three categories, exhibiting lotus-leaf, island, and stripe morphologies. The competitive formation of Cu6Sn5 or Cu3Sn was also controlled by the droplet sizes, and a diameter of approximately 45 μm was identified as the threshold size. After heat treatment at 300 °C for 4 h, the powders consisted of a single η’ Cu6Sn5 phase. The obtained Cu6Sn5 phase powders can be used in the field of high-temperature applications as intermetallic balls for integrated chip interconnects.

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Section: Resultsmentioning

confidence: 83%

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

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Size-Dependent Phase Transformation during Gas Atomization Process of Cu–Sn Alloy Powders

Pan

Liu

et al. 2019

Materials

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“…Powder preparation and post treatment can be used to manipulate structures, for example, the preparation of powder containing Cu 6 Sn 5 intermetallic or CuO nanoparticles to obtain products with unique properties [8, 9]. The development of compacting, sintering, and heat treatment techniques for new materials is also required to support the growth of PM in Thai industries [10–12].…”

Section: Resource Utilizationmentioning

confidence: 99%

Material research for environmental sustainability in Thailand: current trends

Niranatlumpong

Ramangul

Dulyaprapan

et al. 2015

Science and Technology of Advanced Materials

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This article covers recent developments of material research in Thailand with a focus on environmental sustainability. Data on Thailand’s consumption and economic growth are briefly discussed to present a relevant snapshot of its economy. A selection of research work is classified into three topics, namely, (a) resource utilization, (b) material engineering and manufacturing, and (c) life cycle efficiency. Material technologies have been developed and implemented to reduce the consumption of materials, energy, and other valuable resources, thus reducing the burden we place on our ecological system. At the same time, product life cycle study allows us to understand the extent of the environmental impact we impart to our planet.

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“…In the preparation of metal powder for 3D printing, gas atomization, water atomization, plasma fuse method and rotary electrode method are widely used [3][4][5][6][7]. Among them, gas atomization has been witnessed its great success in preparation for Fe, Al, Ni, Ti, Cu and other alloy powders, and promised to be a cost-effective method to produce metal powder due to the high sphericity and high quality of the produced powders, as well as the controllability of powder properties [3,[8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Effects of the Delivery Tube Diameter on the Qualities of Cu-9.7Sn-0.2P Alloy Powder Produced by Gas Atomization

Xiao

Zou³

2018

MSF

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Gas atomization is one of the most cost-effective methods for preparing spherical powders. The Cu-9.7Sn-0.2P alloy powder for 3D printing was prepared by a self-developed double nozzle gas atomization technique with different deliver tube diameters, and the particle size and shape of the powder were characterized. Results show that the powder particles are mostly nearly spherical, mixed with a few irregular powders. The average O. Bluntness of the powders are 60~70%, the average Outgrowths are lower than 18%. The deliver tube diameter affects the powder characteristics directly. The increase of the diameter increases the particle size of the powder and reduces the sphericity. At the same time, the adhesion of the satellite powder decreases, the flowability becomes better and the oxygen content drop. The surface and internal structure of the powder are mainly cellular and dendritic structures.

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Characterization of Cu6Sn5 intermetallic powders produced by water atomization and powder heat treatment

Cited by 9 publications

References 54 publications

Size-Dependent Phase Transformation during Gas Atomization Process of Cu–Sn Alloy Powders

Size-Dependent Phase Transformation during Gas Atomization Process of Cu–Sn Alloy Powders

Material research for environmental sustainability in Thailand: current trends

Effects of the Delivery Tube Diameter on the Qualities of Cu-9.7Sn-0.2P Alloy Powder Produced by Gas Atomization

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