A novel route for the synthesis of ultrafine WC-15 wt %Co cemented carbides

Yang, Qing; Yang, Jiangao; Yan, Weiping; Zhang, Qinying; Chen, Liyong; Chen, Hao

doi:10.1016/j.jallcom.2018.03.197

Cited by 42 publications

(6 citation statements)

References 27 publications

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“…At this time, WC grains can still be dissolved and rearranged in the Co phase. However, due to the uneven distribution and high lattice distortion of Co phase, the WC grains aggregate and grow abnormally 21,22 …”

Section: Resultsmentioning

confidence: 99%

“…However, due to the uneven distribution and high lattice distortion of Co phase, the WC grains aggregate and grow abnormally. 21,22 Figure 3 shows the distribution of Co phase and pores. The uniformity of cobalt phase distribution after the initial sintering will directly affect the size and distribution of grains in the subsequent multiple sintering.…”

Section: Raw Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

Chen

Wang

et al. 2021

Int J Applied Ceramic Tech

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In this study, WC‐8Co cemented carbides were prepared by spark plasma sintering. When the samples sintered at 1300℃ were cooled to room temperature, the samples were sintered multiple times at 1250℃. The changes in microstructure and mechanical properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering were studied. The hardness of cemented carbides increased in the first two sintering, reaching 16.5 GPa. However, the hardness decreased seriously in the last two sintering. The attenuation rates of hardness were 6.2% and 2.5% due to the abnormal coarse grains. Furthermore, the crack path along the grain boundary was almost straight, causing a decrease in the indentation fracture toughness of cemented carbides. Additionally, the grains of cemented carbides were abnormally coarsened, and the morphologies of grains became unstable due to multiple sintering.

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Section: Resultsmentioning

confidence: 99%

Section: Raw Materialsmentioning

confidence: 99%

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

Chen

Wang

et al. 2021

Int J Applied Ceramic Tech

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“…Furthermore, to enhance and improve the comprehensive performance of cemented carbide composites and minimize the cost to match the industrial developmental requirement, researches are being carried out to manufacture nanocrystalline and ultrafine cemented carbides and its composites with incorporation of variety of new binder phases. [110][111][112][113][114][115][116][117][118]…”

Section: Discussionmentioning

confidence: 99%

A review of fabrication and properties of spark plasma sintered tungsten carbide based advanced composites

Dar

Sheikh

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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The high-performance tool materials have been inevitably used for most of the cutting tool applications where high reliability and difficult to cut materials are of major demand. The cemented carbides and its composites offer an excellent combination of the properties where it can be used for tool materials due to its high wear resistance, high hardness at elevated temperatures, and considerable fracture toughness. However to obtain optimum values of mechanical properties and uniformly distributed ultrafine grains, a number of new fabrication techniques, alteration in the content of cemented carbide composition, and variation in the parameters of fabrication process have been employed. This review paper will come in handy for researchers and scientists working on advanced cemented carbides and spark plasma sintering as it overviews the recent work done on tungsten carbide composites using the novel spark plasma sintering technique considering different process parameters in order to achieve ultrafine microstructures of sintered specimens, enhanced mechanical properties of composites in addition to energy as well as time saving considerations. The thorough review of various research papers revealed that the parameters of the sintering (sintering temperature, applied pressure, surrounding environment), additives in sintering (both content and composition), reinforcement of cemented carbide with other materials, nano-filler/whisker addition, partial or complete removal of metallic phase from the cemented carbide affect the properties of sintered specimens and their calculated as well as optimum setting can provide an excellent combination of properties desired in cutting tool operations.

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“…The precursor of the highly dispersed and highly active W-Co compound is prepared to generate ultra-fine WC-Co composite powders through reduction and carbonization in a fixed or fluidized bed. This method is also called chemical precipitation (Yang et al, 2018). Compared with other methods, chemical precipitation presents the advantages of simple equipment and easy process control; moreover, the prepared nano-WC-Co powders have small particle size, uniform distribution, and high reaction activity.…”

Section: Liquid-phase Methodsmentioning

confidence: 99%

Preparation Technology of Ultra-Fine Tungsten Carbide Powders: An Overview

Tan

et al. 2020

Front. Mater.

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Ultrafine tungsten carbide (WC) powder refers to WC powders with a particle size between 100 and 500 nm. Researchers have improved the comprehensive properties of WC-based cemented carbides by preparing ultra-fine WC powders. Because of the preparation and application of nanoscale WC powders, ultrafine-grain cemented carbides with excellent hardness and wear resistance have been successfully produced. In this paper, the preparation methods of ultra-fine WC powder are divided into solid-phase, liquid-phase, and vapor-phase methods according to the state of the raw materials (i.e., the W or C source). The liquid-phase methods could realize the preparation of WC at the temperature between 500 and 800 • C. The purity of WC prepared by vapor-phase method is the highest. The solid-phase reduction carbonization method has potential industrial application.

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A novel route for the synthesis of ultrafine WC-15 wt %Co cemented carbides

Cited by 42 publications

References 27 publications

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

A review of fabrication and properties of spark plasma sintered tungsten carbide based advanced composites

Preparation Technology of Ultra-Fine Tungsten Carbide Powders: An Overview

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A novel route for the synthesis of ultrafine WC-15 wt %Co cemented carbides

Cited by 42 publications

References 27 publications

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

Microstructure and properties of WC‐8Co cemented carbides prepared by multiple spark plasma sintering

A review of fabrication and properties of spark plasma sintered tungsten carbide based advanced composites

Preparation Technology of Ultra-Fine Tungsten Carbide Powders: An Overview

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Product

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A novel route for the synthesis of ultrafine WC-15 wt %Co cemented carbides