Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration

Bao, Sarina; Tang, Kai; Kvithyld, Anne; Engh, Thorvald Abel; Tangstad, Merete

doi:10.1016/s1003-6326(11)61410-6

Cited by 116 publications

(42 citation statements)

References 33 publications

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“…In fact, Ferro and Derby [19] used the pressureless-sintered polycrystalline SiC, while Laurent et al [14] and Nogi and Ogino [15] used (0 0 0 1) ␣-SiC single crystals. Moreover, Laurent et al [14] claimed that the surface of the SiC single crystal substrate should be considered as a mixture of Si-termination and C-termination due to the roughness caused by polishing, while Nogi and Ogino [15] and other researchers [11,12,16] did not even mention the surface polarity of the SiC single crystals they used. It is worth noting that the surface polarity or orientation of the substrate could play a significant role on the wetting in some reactive and non-reactive systems.…”

Section: Introductionmentioning

confidence: 97%

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Influence of SiC surface polarity on the wettability and reactivity in an Al/SiC system

Shen

Wang

Ren

et al. 2015

Applied Surface Science

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Section: Introductionmentioning

confidence: 97%

“…1. Equilibrium contact angles for the Al/SiC system as a function of temperature reported in literature [8,[11][12][13][14][15][16][17][18][19]. SC, single crystalline SiC; S, sintered polycrystalline SiC; RB, reaction bonded polycrystalline SiC.…”

Section: Introductionmentioning

confidence: 99%

Influence of SiC surface polarity on the wettability and reactivity in an Al/SiC system

Shen

Wang

Ren

et al. 2015

Applied Surface Science

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“…Therefore, it seems that Al 4 C 3 formation to a low extent is suitable for required bonding between SiC and aluminum [37].…”

Section: -2-reaction Between Aluminum Matrix and Sic Particlesmentioning

confidence: 99%

“…However, intensive reaction between Al and SiC due to long exposure time or very high casting temperature which leads to the formation of a more thick layer of Al 4 C 3 might not to be suitable for AMMCs [37]. In order to evaluate the reaction occurrence between Al and SiC and observe the boding of SiC with aluminum matrix, HRTEM analysis was used for all the samples.…”

Section: -2-reaction Between Aluminum Matrix and Sic Particlesmentioning

confidence: 99%

Stir casting process for manufacture of Al–SiC composites

et al. 2015

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Stir casting is an economical process for the fabrication of aluminum matrix composites. There are many parameters in this process, which affect the final microstructure and mechanical properties of the composites. In this study, micron-sized SiC particles were used as reinforcement to fabricate Al-3 wt% SiC composites at two casting temperatures (680 and 850 °C) and stirring periods (2 and 6 min). Factors of reaction at matrix/ ceramic interface, porosity, ceramic incorporation, and agglomeration of the particles were evaluated by scanning electron microscope (SEM) and high-resolution transition electron microscope (HRTEM) studies. From microstructural characterizations, it is concluded that the shorter stirring period is required for ceramic incorporation to achieve metal/ceramic bonding at the interface. The higher stirring temperature (850 °C) also leads to improved ceramic incorporation. In some cases, shrinkage porosity and intensive formation of Al4C3 at the metal/ceramic interface are also observed. Finally, the mechanical properties of the composites were evaluated, and their relation with the corresponding microstructure and processing parameters of the composites was discussed. AbstractStir casting is an economical process for fabricating aluminium matrix composites. There are

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“…For this reason the interfacial energy values for nanoparticles in metal melts are taken from experimental values reported in the literature [27][28][29][30][31]. If surface energy values for both the particle γsv and melt γlv are known, then the contact angle ω is used to evaluate the interfacial energy γsl according to the Young's equation:…”

Section: Modeling the Breaking Up Of Nano-particle Agglomeratesmentioning

confidence: 99%

Modeling the Break-up of Nano-particle Clusters in Aluminum- and Magnesium-Based Metal Matrix Nano-composites

Manoylov

Bojarevics

Pericleous

2015

Metall Mater Trans A

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Aluminium and magnesium based metal matrix nanocomposites (MMNC) with ceramic nano-reinforcements promise low weight with high durability and superior strength, desirable properties in aerospace, automobile and other applications. However, nano-particle agglomerations lead to adverse effects on final properties: large-size clusters no longer act as dislocation anchors, but instead become defects; the resulting particle distribution will be uneven, leading to inconsistent properties. To prevent agglomeration and to break up clusters, ultrasonic processing is used via an immersed sonotrode, or alternatively via electromagnetic vibration. A study of the interaction forces holding the nano-particles together shows that the choice of adhesion model significantly affects estimates of break-up force and that simple Stokes drag due to stirring is insufficient to break up the clusters. The complex interaction of flow and co-joint particles under a high frequency external fields (ultrasonic, electromagnetic) is addressed in detail using a discrete-element method (DEM) code to demonstrate the effect of these fields on deagglomeration.

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Wetting of pure aluminium on graphite, SiC and Al2O3 in aluminium filtration

Cited by 116 publications

References 33 publications

Influence of SiC surface polarity on the wettability and reactivity in an Al/SiC system

Influence of SiC surface polarity on the wettability and reactivity in an Al/SiC system

Stir casting process for manufacture of Al–SiC composites

Modeling the Break-up of Nano-particle Clusters in Aluminum- and Magnesium-Based Metal Matrix Nano-composites

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