Production and Mechanical Properties of Powders Coated by Electrolysis and Other Processes

Coleman, D. S.; Foba, Josepha

doi:10.1179/pom.1989.32.1.35

Cited by 15 publications

(4 citation statements)

References 4 publications

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“…For example, the uniform thicknesses of the coatings resulting from electrochemical preparation processes, enables high-quality modified powder materials to be obtained for powder metallurgy. By using a fluidised bed an even, uniform and stable metallic coating can be deposited onto powder substrates [117][118][119][120].…”

Section: Electrodeposition On Powder Substratesmentioning

confidence: 99%

Recent developments in the electrodeposition of nickel and some nickel-based alloys

Oriňáková¹,

Turoňová²,

Kladeková³

et al. 2006

J Appl Electrochem

223

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The numerous theoretical and practical studies of the electrodeposition of nickel and its binary and selected ternary alloys with copper and cobalt over the last 10-15 years are reviewed. The reported mechanisms of the electrodeposition processes and accompanying evolution of hydrogen are considered. The complex influence of different bath compositions, pHs, current densities or potential ranges and temperature on the formation of single or multiple deposition layers are compared. The determination of the structure and morphology of the deposits on different substrates, including solid surfaces and particulate materials, using a range of analytical techniques are reported.

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Section: Electrodeposition On Powder Substratesmentioning

confidence: 99%

Recent developments in the electrodeposition of nickel and some nickel-based alloys

Oriňáková¹,

Turoňová²,

Kladeková³

et al. 2006

J Appl Electrochem

223

View full text Add to dashboard Cite

show abstract

“…This superiority is the reason for choosing the electrolysis method. Electrolysis can be defined as solving the high purity metal ions from one electrode and accumulating these ions on the other electrode using dc current [30][31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Novel advanced copper-silver materials produced from recycled dendritic copper powders using electroless coating and hot pressing

et al. 2022

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In this study, copper powders with dendritic morphology were produced by the electrolysis method, and then silver coating was applied to these powders by an electroless coating method. The bulk samples were fabricated by hot pressing method using different ratios of copper and silver-plated copper powders. The results showed that the electroless silver coating layer provided a strong bond at the particle boundaries of the samples, significantly improving the physical and mechanical properties of the materials. Accordingly, the hardness, tensile strength, electrical and thermal conductivity values of the samples produced from silver-plated dendritic copper particles were determined to be approximately 98 HB, 185 MPa, 102 IACS% and 402 W mK −1 , respectively. In addition, the oxidation resistance of the sample produced from completely silver-coated copper powders is 4 times higher than that of pure copper.

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“…Several groups have shown that copper‐coated iron powders can improve the green strength. [ 4 ] Improved surface roughness for mechanical interlocking and cold welding has been considered as the dominant mechanism to increase the green strength. [ 5 ] Increase in green strength has also been accomplished using special polymeric lubricants.…”

Section: Introductionmentioning

confidence: 99%

Densification and Strengthening of Ferrous‐Based Powder Compacts Through Cold Sintering Aided Warm Compaction

et al. 2022

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Cold sintering of surface‐modified iron compacts results in a co‐continuous phosphate interphase between iron particles that provide both enhanced green strength and green density similar to the process that has been successfully introduced in low‐temperature densification of ceramic materials. Relative density as high as 95% along with transverse rupture strength of ≈ 75 MPa, which is almost six times that of conventional powdered metal iron compact and 2.5 times that of warm compacted controls, is achieved. Dilatometry study at different pressures shows a small but significant improvement in densification process during cold sintering relative to the larger densification of warm compacted control. Strength model based on microstructural analysis as well as in situ diffused reflectance infrared Fourier transform spectroscopy (DRIFTS) experiments reveals the nature of the interphase that imparts the large cohesive strength under the cold sintered assisted warm compaction. The process is conducive to produce iron compacts for green machining. Furthermore, the samples when subjected to high‐temperature sintering yield a fully sintered iron compact with density > 7.2 g cm−3 and transverse rupture strength as high as 780 MPa. All in all, there are major new opportunities with the cold sintered assisted warm compaction of powdered metals that will also be discussed.

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Production and Mechanical Properties of Powders Coated by Electrolysis and Other Processes

Cited by 15 publications

References 4 publications

Recent developments in the electrodeposition of nickel and some nickel-based alloys

Recent developments in the electrodeposition of nickel and some nickel-based alloys

Novel advanced copper-silver materials produced from recycled dendritic copper powders using electroless coating and hot pressing

Densification and Strengthening of Ferrous‐Based Powder Compacts Through Cold Sintering Aided Warm Compaction

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