Microstructure, Mechanical and Wear Behaviors of Hot-Pressed Copper-Nickel-Based Materials for Diamond Cutting Tools

Miranda, G.; Ferreira, Pedro Eduardo; Buciumeanu, M.; Cabral, A.; Fredel, Márcio C.; Silva, Filipe; Henriques, Bruno

doi:10.1007/s11665-017-2819-z

Cited by 32 publications

(8 citation statements)

References 16 publications

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“…After mechanically mixing the powders for 6 h, the obtained mixture was placed inside graphite dies. The different specimens were then sintered by pressure-assisted sintering (HP) under vacuum, using a high frequency induction furnace (AMERITHERM, Inc. Nova Star 5) (schematic representation found in a previous study 16 ). Using a heating rate of 25 ℃/min, the die was heated up to 1150 ℃, and then a pressure of 35 MPa was applied for 15 min for promoting the sintering of the specimens.…”

Section: Methodsmentioning

confidence: 99%

“…13 However, Co high toxicity reduced availability, and price instability 14 has set the tone for the search of alternative binder materials or materials with lower Co content for cutting tools. 15–17 However, these materials need to impart to the tool the necessary mechanical and wear resistance under in-service conditions.…”

Section: Introductionmentioning

confidence: 99%

“…11,12 There are evidences in previous studies that when using adequate processing, cobalt presents a good compatibility with CBN, guaranteeing that no phase transformation into hexagonal boron nitride (owing lower hardness) occurs, with especial attention needed regarding temperature, that must be kept lower than 1300 C. 13 However, Co high toxicity reduced availability, and price instability 14 has set the tone for the search of alternative binder materials or materials with lower Co content for cutting tools. [15][16][17] However, these materials need to impart to the tool the necessary mechanical and wear resistance under in-service conditions.…”

Section: Introductionmentioning

confidence: 99%

“…Hot pressing (HP) technique makes use of temperature and pressure simultaneously in order to sinter a metallic matrix free of porosity, usually attaining a high level of densification. [15][16][17][18] HP allows a strict control of the temperatures achieved, a fact that together with an accurate control of the sintering time allows avoiding grain growth, thus enhancing the mechanical properties of the material.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical and tribological performance of Ni–Co-based binders for cubic boron nitride cutting tools

Miranda

Guimarães

Pereira

et al. 2020

Journal of Composite Materials

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Cubic boron nitride is becoming an alternative cutting tool material for machining under demanding conditions, displaying superior wear performance and machined parts with higher quality. The current need to reduce the cobalt content in these tools led to this study and focused on alternative binder materials for cubic boron nitride cutting tools. This work addresses several nickel–cobalt-based materials, regarding their microstructure, mechanical (hardness and shear strength), and tribological performance. The best results were attained when adding tungsten carbide to nickel–cobalt, once nickel–cobalt–tungsten carbide was found to display the higher mechanical properties, together with the higher wear resistance.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mechanical and tribological performance of Ni–Co-based binders for cubic boron nitride cutting tools

Miranda

Guimarães

Pereira

et al. 2020

Journal of Composite Materials

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“…When used for producing a diamond reinforced metal matrix to avoid the graphitization of diamond particles, it presents the advantage to strictly control the processing parameters (temperature, pressure and time). It seems like a spark plasma sintering process, but this process established without power, where no need for current to pass it between two electrodes [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Aluminum Matrix Nanocomposites by Hot Compaction

Yehia

Menisy²,

Allam

et al. 2020

Journal of Petroleum and Mining Engineering

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In this investigation, five aluminum matrix nanocomposites were obtained by the hot pressing at 800 MPa and 600 oC. The electrolysis coating technique was utilized to prepare the nano-nickel powder. The fabricated nanocomposites were characterized by studying their chemical composition, microstructure, hardness, and thermal expansion coefficient. The scanning electron microscope of the microstructure of the electroless nickel powder shows that the Ni particles have nano-size where it was less than 100 nm. The EDAX analysis of the fabricated composite that contains 25 wt. % (Al2O3) in different regions was established. No elements rather than Al, Cu, Ni, and O were observed. The hardness of the aluminum matrix increases as the content of the Al2O3 increases. In addition, the thermal expansion coefficient was reduced by increasing the Al2O3 content for reasons related to the low thermal expansion of the alumina reinforcement 7.2 x10-6 mm/ o C compared with aluminum that has 23.1x10-6 mm/ o C.

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Machine learning‐based analysis and prediction of the interfacial corrosion processes of copper cathode plates during the electrolytic production of copper powders

Zhou

Lin

et al. 2022

Materials & Corrosion

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Present efforts to support the essential industrial‐scale electrolytic production of copper‐based metal powders urgently require approaches to the real‐time predicting of corrosion of copper cathodes employed in electrolytic production processes. However, current approaches are extremely limited owing to the difficulty of accurately modeling the complex cathode corrosion process. In this study, the corrosion process under different parameters was analyzed by a self‐designed continuous electrolytic corrosion experimental device, clarify the influence mechanism of current density on the corrosion of the solid–liquid–gas interface area, and addresses this issue by applying a random forest machine learning approach based on three process parameters, including the electrolyte temperature, liquid‐level fluctuation cycle period, and current density. The dataset employed in the model is obtained using a novel experimental corrosion test method based on electrode arrays. The experimental results include the corrosion rates of copper cathode plates at different positions relative to the liquid electrolyte level during the electrolysis process. The resulting stochastic model is demonstrated to obtain a high prediction accuracy of 97% for the various regions of copper cathode plates defined according to liquid electrolyte level.

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Microstructure, Mechanical and Wear Behaviors of Hot-Pressed Copper-Nickel-Based Materials for Diamond Cutting Tools

Cited by 32 publications

References 16 publications

Mechanical and tribological performance of Ni–Co-based binders for cubic boron nitride cutting tools

Mechanical and tribological performance of Ni–Co-based binders for cubic boron nitride cutting tools

Fabrication of Aluminum Matrix Nanocomposites by Hot Compaction

Machine learning‐based analysis and prediction of the interfacial corrosion processes of copper cathode plates during the electrolytic production of copper powders

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