Sintering and characterization of a hard-to-hard configured composite: Spark plasma sintered WC reinforced α−SiAlON

Biswas, Mita; Sarkar, Soumya; Halder, Rupa; Bysakh, Sandip; Muraleedharan, K.; Bandyopadhyay, Siddhartha

doi:10.1016/j.jpcs.2020.109548

Cited by 7 publications

(6 citation statements)

References 39 publications

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“…The most commonly used molds/punches are considered to be of graphite for most of the composites and generally graphite sheets are used as a shroud between the sample and the mold-die punch to prevent the sticking of the sample and mold/punch for further use. 11,[68][69][70][71][72][73][74][78][79][80][81][82][83][84][85][86][87][88] The SPS process is entirely divided into four main stages which are (a) removal of gases from the chamber and generation of vacuum, (b) the two intermediate stages involves the simultaneous application of resistance heating and applied pressure, (c) cooling of sintered samples. 75 The existence of spark plasma and the occurrence of discharge have been a controversial issue and highly debatable in SPS sintering process.…”

Section: Sinteringmentioning

confidence: 99%

“…Biswas et al 83 in 2020 sintered a composite comprising tungsten carbide particulate-reinforced α SiAlON using SPS so as to prepare a hard to hard phase configuration and the toughening of the hard matrix via particulate reinforcement. The results revealed elongated and equiaxed grains of α SiAlON whereas the tungsten carbide grains seemed to be equiaxed in nature.…”

Section: Review Of Properties Of Tungsten Carbide Composites Fabricat...mentioning

confidence: 99%

“…SPS is an advanced and novel method of sintering process that offers many advantages over conventional sintering techniques such as higher heating rates, shorter holding times, and comparatively lower sintering temperatures. 73–94 The typical SPS system consists of a mechanical loading system, an electric current generator, vacuum/atmosphere chamber, and a water cooling apparatus as shown in Figure 3. 67…”

Section: Review Of Literaturesmentioning

confidence: 99%

Section: Review Of Literaturesmentioning

confidence: 99%

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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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Section: Sinteringmentioning

confidence: 99%

Section: Review Of Properties Of Tungsten Carbide Composites Fabricat...mentioning

confidence: 99%

Section: Review Of Literaturesmentioning

confidence: 99%

Section: Review Of Literaturesmentioning

confidence: 99%

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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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“…However, the strength of the nanocomposite was considerably reduced due to the high interfacial mismatch strain developed [31,32]. Similarly, the hardness and fracture toughness of SiAlON can be improved by adding cBN inclusions [33] as well as WC particles [34]. As the thermal conductivity of SiC is significantly higher than that of SiAlON, adding 10-25 wt% SiC improves the thermal diffusivity of α-SiAlON by ~30-70%.…”

Section: Introductionmentioning

confidence: 99%

A Material-by-Design Approach to Develop Ceramic- and Metallic-Particle-Reinforced Ca-α-SiAlON Composites for Improved Thermal and Structural Properties

2022

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α-SiAlON is commonly used to machine superalloys owing to its desirable thermal and structural properties. α-SiAlON is among the crystalline forms of SiAlON and has more favorable properties than β-SiAlON. However, it becomes fragile during the machining of hard-to-cut materials due to its low fracture toughness and machinability. Recent research efforts focus on improving the thermal and structural properties of α-SiAlON using suitable dopants, nano-sized precursors, and the addition of metallic/ceramic reinforcement particles. The present study presents a material-by-design approach to designing and developing ceramic and metal-particle-reinforced Ca-α-SiAlON composites with properties tailored for the cutting tool applications. The mean-field homogenization theories and effective medium approximations implemented in an in-house code are used to effectively optimize the thermal and structural properties of the Ca-α-SiAlON composite by varying essential parameters such as inclusion material, volume fraction, porosity, particulate size, and thermal interface resistance. Individual properties of the matrix and reinforcements are considered in the computations of effective properties such as thermal conductivity, thermal expansion coefficient, modulus of elasticity, and fracture toughness. The main objective of the study is to enhance the thermal conductivity and fracture toughness of Ca-α-SiAlON, while lowering its thermal expansion coefficient. At the same time, the elastic modulus and hardness/strength must be maintained within an acceptable range. As a validation, Ni/Ca-α-SiAlON and SiC/Ca-α-SiAlON composites are synthesized from the nano-sized precursors, CaO dopant, and Ni/SiC microparticles via spark plasma sintering (SPS) process. The thermal conductivity, coefficient of thermal expansion, and elastic modulus of the composites are measured and compared with the computational predictions. The computational predictions are found to be comparable to that of the experimental measurements. Moreover, the studies show that WC, SiC, and Cr can be suitable reinforcement materials for enhancing the thermal and structural properties of Ca-α-SiAlON material for the cutting tool inserts.

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Tungsten Carbides

Shabalin

2022

Ultra-High Temperature Materials IV

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Sintering and characterization of a hard-to-hard configured composite: Spark plasma sintered WC reinforced α−SiAlON

Cited by 7 publications

References 39 publications

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

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

A Material-by-Design Approach to Develop Ceramic- and Metallic-Particle-Reinforced Ca-α-SiAlON Composites for Improved Thermal and Structural Properties

Tungsten Carbides

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