Electroless nickel coated short carbon fibres in aluminium matrix composites

Rams, J.; Ureña, A.; Escalera, M.D.; Sánchez, M.

doi:10.1016/j.compositesa.2006.02.010

Cited by 128 publications

(60 citation statements)

References 18 publications

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“…Calcium addition caused decreasing of the ¢-Mg 17 Al 12 phase because aluminum atoms were consumed by the formation of Ca-containing phase. Figure 3 shows the droplets of the Mg-5Al and Mg-5Al-3Ca alloys on various substrates during contacting about 10 min at 1003 K. Images of the droplets show that both the oxidation and evaporation problem of the melt encountered in previous study 17,21) were successfully avoided during 10 min. Figure 3(a) represents the Mg-5Al alloy droplet on graphite sheet.…”

Section: Experimental Methodsmentioning

confidence: 83%

“…20) Rams et al and Ryu et al fabricated aluminum matrix composites reinforced with nickel coated fibers. 21,22) Coatings improved the wetting behavior of carbon fibers by molten aluminum because of the formation of a transient AlNi intermetallic compound at the matrixfiber interface, limiting fiber segregation to obtain a homogeneous reinforcement distribution. Nickel coating also reduced the trend to form aluminum carbide.…”

Section: Introductionmentioning

confidence: 99%

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Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

Yao

Sugio

et al. 2015

Mater. Trans.

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Magnesium-calcium alloy-based composites reinforced with vapor grown carbon fibers (VGCFs) are supposed to possess satisfactory high-temperature applications. However, poor wettability of magnesium with carbon fiber is a technical problem encountered in fabrication of the composites. In order to cover the wetting problem, wetting behavior of magnesium alloys on graphite sheet, pure nickel, and nickel coated graphite sheet were investigated using sessile drop method. The graphite was non-wetting by both Mg-5Al alloy and Mg-5Al-3Ca alloy with contact angles about 120°. The droplet of magnesium alloys on nickel plate spread rapidly. Contact angle of Mg-5Al-3Ca alloy decreased from about 94°to 43°. Wettability of magnesium alloys on nickel coated graphite sheet was improved through the dissolution of nickel into the liquid magnesium alloy. Calcium addition showed negative effect on contact angle of nickel substrate, and also slightly hindered the spread of magnesium alloy droplet on nickel coated graphite sheet.

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Section: Experimental Methodsmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

Yao

Sugio

et al. 2015

Mater. Trans.

View full text Add to dashboard Cite

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“…In particular, it allows uniform coating on non-conductive surfaces with complicated geometry (Ref 3,4), especially on bundles of carbon fibers, which when coated with Ni-P layers are used in polymer matrix composites for electromagnetic shielding . Moreover, Ni-P layers on carbon fiber scan be used to fabricate reinforced metal matrix composites (Ref [10][11][12] because they increase the wettability between the fiber and the metal (Ref [13][14][15][16]. The properties of Ni-P coatings on carbon fibers were described in previous research (Ref [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Quantitative Image Analysis of Ni-P Coatings Deposited on Carbon Fibers

Kozera

Bucki

Sałacińska

et al. 2015

J. of Materi Eng and Perform

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In this work, polyacrylonitrile (PAN)-based carbon fibers coated with different thicknesses of Ni-P coatings were studied. The coatings were deposited by electroless metallization lasting from 3 to 22 min and consisted of approximately 3 wt.% phosphorous. Computer quantitative image analysis was used to characterize the surface features and thickness of the coatings as a function of the time of metallization. The results showed that quantitative image analysis is a useful technique for the measurement of the coating thickness and can be used as a tool for obtaining an innovative description of the Ni-P coating morphology. The morphology of the coatings and their thicknesses were investigated by scanning electron microscopy. The image analyses were performed using the proprietary software Micrometer, developed at the Faculty of Materials Science and Engineering, Warsaw University of Technology. The observations revealed that a specific feature of the coating topography is the hemispherical bulge of a diameter ranging from 0.1 to 10 lm. The thickness of the coatings increases linearly with the metallization time. The obtained results indicated that the methodology proposed in the present work can be successfully applied and possesses several advantages over the traditionally used weight measurements technique.

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“…17) Nickel is frequently used for coating reinforcement particles used with aluminum-based composites. [18][19][20][21] It has been found that nickel coatings can improve the wetting behavior of carbon bers by molten aluminum and limit ber segregation to obtain a homogeneous reinforcement distribution. Our previous study revealed that an improvement in the wettability of a magnesium alloy on a nickel-coated graphite sheet was achieved through the dissolution of the nickel into the liquid magnesium alloy.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Vapor-Grown Carbon Fiber-Reinforced Magnesium-Calcium Alloy Composites by Compo-Casting Process

Yao

Sugio

et al. 2017

Mater. Trans.

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Magnesium-calcium alloy composites reinforced with nickel-coated vapor-grown carbon bers (VGCFs) were fabricated using a compo-casting process. Then, the microstructures and mechanical properties of these composites were investigated. The Mg-5Al-3Ca (AX53) alloy exhibited a dendritic microstructure with a coarse lamellar (Mg, Al) 2 Ca phase along the grain boundaries instead of the irregular β-Mg 17 Al 12 phase found in the Mg-5Al alloy. For the 0.5% Ni-coated VGCF-reinforced AX53 alloy composite, the VGCFs were well dispersed in the matrix, with the nickel coating diffused into the metal. Al 3 Ni compounds formed both inside the grains and on the grain boundaries. The ultimate tensile strength (UTS) and strain-hardening of the AX53 alloy, in comparison with the Mg-5Al alloy, were improved signi cantly to the point of fracture. Furthermore, an increase in the UTS of the composite was achieved with the addition of 0.5% VGCFs, along with an increase in the total elongation, which could mainly be attributed to the strain hardening during a larger strain. The 0.2% yield stress was slightly improved as a result of the small amount of introduced Ni-coated VGCFs. However, the elongation dropped for the 1.0% VGCF-reinforced AX53 alloy composites, which led to a low strength similar with that of the AX53 alloy.

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Electroless nickel coated short carbon fibres in aluminium matrix composites

Cited by 128 publications

References 18 publications

Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

Nickel Formation on Graphite Sheet Surface for Improving Wettability with Magnesium Alloy

Quantitative Image Analysis of Ni-P Coatings Deposited on Carbon Fibers

Fabrication of Vapor-Grown Carbon Fiber-Reinforced Magnesium-Calcium Alloy Composites by Compo-Casting Process

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