A facile route to synthesize WC–Co nanocomposite powders and properties of sintered bulk

Lin, Hua; Sun, Jianchun; Li, Chunhong; He, Hong; Qin, Lizhao; Li, Qing

doi:10.1016/j.jallcom.2016.03.285

Cited by 41 publications

(13 citation statements)

References 33 publications

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“…[3][4][5][6][7][8][9] From these composites can be obtained filters with high porosity, fine pore distribution and resistance in chemically aggressive environments or at high temperatures, according to the intended use. [10][11][12] The processes for obtaining ceramic filters also vary greatly: by compacting single-fraction powders, [13][14][15][16] by casting, 17,18 by the sol-gel method. 19,20 For example, those based on silicon carbide can be produced by: casting slip, 21,22 vacuum extrusion, 23 melt infiltration, 24 etc.…”

Section: Introductionmentioning

confidence: 99%

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Bentonite-based composites with ceramic and metallic powders additions for use as filters

Matei

Maria

Varga

et al. 2021

Advances in Mechanical Engineering

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This paper represents the study of bentonite matrix composite reinforced with ceramic (Al2O3 and SiC) and metallic (Al and Fe) particles for the production of filters. Ceramic powders were used to generate pores and metallic particles to control the pore size (to finish them). These materials were added to composites in two stages. In the first stage, the ceramic particles (Al2O3 and SiC) were added to the bentonite matrix, thus obtaining two types of composites. In the second stage, for each type of composite, metallic powders of Al and Fe were added. The composites was prepared by mixing the components, cold pressing for compaction in cylindrical samples and, at the end, sintering at 1250°C. The samples thus produced underwent studies by optical and electron microscopy, diffractometry, dilatometry and thermal analysis and tests to determine the compressive strength and the porosity. Thus, there was obtained useful information regarding the behaviour and impact of the reinforcing materials in the process of producing the composites, and on their impact on the final properties of the composites produced.

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Section: Introductionmentioning

confidence: 99%

“…The processes for obtaining ceramic filters also vary greatly: by compacting single-fraction powders, 13–16 by casting, 17,18 by the sol-gel method. 19,20 For example, those based on silicon carbide can be produced by: casting slip, 21,22 vacuum extrusion, 23 melt infiltration, 24 etc.…”

Section: Introductionmentioning

confidence: 99%

Bentonite-based composites with ceramic and metallic powders additions for use as filters

Matei

Maria

Varga

et al. 2021

Advances in Mechanical Engineering

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“…37 However, the cemented carbides are mostly fabricated by sintering which is a powder metallurgy technique for wide manufacture of ceramic materials. 38 The ultrafine grain cemented carbides are manufactured by various sintering techniques which includes pressureless sintering (PLS), 39 hot isostatic pressing sintering, 40 hotpress sintering (HP), [41][42][43][44][45][46][47] microwave sintering (MS) 48,49 , and spark plasma sintering (SPS). [50][51][52][53][54][55] Lin et al 44 manufactured WC-8 wt% Co composite by HP and achieved high density of material at elevated pressure; however, the prolonged production cycle does not yield fine grain, particularly the long holding time.…”

Section: Introductionmentioning

confidence: 99%

“…38 The ultrafine grain cemented carbides are manufactured by various sintering techniques which includes pressureless sintering (PLS), 39 hot isostatic pressing sintering, 40 hotpress sintering (HP), [41][42][43][44][45][46][47] microwave sintering (MS) 48,49 , and spark plasma sintering (SPS). [50][51][52][53][54][55] Lin et al 44 manufactured WC-8 wt% Co composite by HP and achieved high density of material at elevated pressure; however, the prolonged production cycle does not yield fine grain, particularly the long holding time. Bao et al 49 applied MS technique to produce WC-8 wt% Co composite and obtained fine grain size and consistent tissue distribution although this technique is limited for longer holding time and slow heating rate.…”

Section: Introductionmentioning

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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“…Moreover, the sintering method can also affect the wear resistance of materials. In the case of cemented carbides, sintering methods include hot-press sintering, 18,19 microwave sintering, 20,21 and spark plasma sintering (SPS). 16,22 Comparing these methods, smaller grains were obtained with SPS due to its fast heating rate and short retention time.…”

Section: Introductionmentioning

confidence: 99%

Tribological behavior of spark plasma sintered ultrafine-grained WC-cobalt cemented carbides in dry sliding

Wang

Yin

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Ultrafine-grained tungsten carbide-cobalt (WC-Co) cemented carbides with different Co content were fabricated by spark plasma sintering. Then, tribological behavior of the ultrafine-grained WC-Co cemented carbides were studied by performing sliding wear tests with grinding balls made of GCr15 bearing steel (HRC 62∼66) and Ti-6Al-4V titanium alloy (HRC 36). When the grinding ball is composed of GCr15 steel, the time required to reach the stable friction stage decreases with the increase in cobalt content, whereas the friction coefficient and wear rate tend to increase, and the wear type is abrasive wear. When the grinding ball is made of titanium alloy, the friction coefficient and adhesive wear volume first increase and then decrease with the increase in Co content, both reaching maximum values at 6 wt.% Co, and the wear type is adhesive wear.

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A facile route to synthesize WC–Co nanocomposite powders and properties of sintered bulk

Cited by 41 publications

References 33 publications

Bentonite-based composites with ceramic and metallic powders additions for use as filters

Bentonite-based composites with ceramic and metallic powders additions for use as filters

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

Tribological behavior of spark plasma sintered ultrafine-grained WC-cobalt cemented carbides in dry sliding

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