Production of W-based nanoparticles via spark erosion process along with their characterization and optimization for practical application in gas sensor

Singh, Pawandeep; Mondal, Surajit; Das, Alok Kumar; Mishra, Surendra Kumar; Singh, Dwesh K.; Singh, Siddhartha Kumar

doi:10.1007/s00339-019-3259-4

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…Solid-phase NC materials synthesis is mainly used for metals and alloys. The commonly used method of bulk-nano structuring from the solid starting phase is mechanical alloying, cryomilling [47][48][49][50][51], HEBM [52][53][54]), and spark erosion [55][56][57]. In recent years bulk-nanostructuring using the cryomilling method got wide attention among scholars because of the energy-efficient nature compared to other NC production routes.…”

Section: Rapid Solidificationmentioning

confidence: 99%

“…The result is a homogenous mixture of particles with NC grains structure. This process is mainly used to produce NC metal powders of aluminum, titanium, and their alloys [54]. The recovery and recrystallization due to heat generation because of friction is one of the downsides of this process and is difficult to control by any of its process parameters [106].…”

Section: High Energy Ball Millingmentioning

confidence: 99%

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Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

et al. 2021

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Nanostructuring is a commonly employed method of obtaining superior mechanical properties in metals and alloys. Compared to conventional polycrystalline counterparts, nanostructuring can provide remarkable improvements in yield strength, toughness, fatigue life, corrosion resistance, and hardness, which is attributed to the nano grain size. In this review paper, the current state-of-the-art of synthesis methods of nanocrystalline (NC) materials such as rapid solidification, chemical precipitation, chemical vapor deposition, and mechanical alloying, including high-energy ball milling (HEBM) and cryomilling was elucidated. More specifically, the effect of various process parameters on mechanical properties and microstructural features were explained for a broad range of engineering materials. This study also explains the mechanism of grain strengthening using the Hall-Petch relation and illustrates the effects of post-processing on the grain size and subsequently their properties. This review also reports the applications, challenges, and future scope for the NC materials.

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Section: Rapid Solidificationmentioning

confidence: 99%

Section: High Energy Ball Millingmentioning

confidence: 99%

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

et al. 2021

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“…Из-за высокой твердости, прочности и химической стойкости твердые сплавы приходится перерабатывать дорогостоящими химическими способами с использованием опасных и вредных реагентов [17][18][19]. Электроэрозионное диспергирование (ЭЭД) является одним из перспективных альтернативных методов получения порошков без использования этих опасных и дорогостоящих реагентов [20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35].…”

Section: Introductionunclassified

“…После завершения искрового разряда пузырек пара схлопывается, а расплавленный и кипящий материал выбрасывается в межэлектродный промежуток и охлаждается со скоростью 10 6 -10 9 °С/с [39]. В результате закалки образуются наноразмерные [20,21,25,26,35,40,41], ультрамелкозернистые [27, 31,32,42,43] и аморфные частицы сферической формы. Эти сферические частицы, полученные методом ЭЭД, могут быть использованы в производстве ультрамелкозернистого твердого сплава, 3D-печати для изготовления индивидуальных изделий сложной формы [44][45][46] и нанесении покрытий методом высокоскоростного газопламенного напыления [47].…”

Section: Introductionunclassified

Influence of Liquid Composition and Discharge Energy on Process Performance, Composition, and Properties of Particles Formed During Electric Discharge Erosion of WC-5TiC-10Co Alloy

Dvornik¹,

Burkov²,

Mihailenko³

et al. 2023

EOM

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Increasing the hardness and wear resistance of powder alloys and coatings through the use of ultrafine-grained powders and metastable phases is a promising way in powder metallurgy. This paper presents the results of the studies of the process of obtaining ultrafine powders by the electric discharge erosion of the cemented carbide waste WC-5TiC-10Co on a special installation. An empirical model that describes the dependence of the productivity of the process on the discharge energy and properties of the liquid is provided. The dependence of the chemical and phase compositions of the obtained powder on the composition of the used liquid and specific energy consumption has been investigated. The effect of the discharge energy on the morphological composition and average particle diameter has been examined. It is revealed that the formation of a metastable solid solution (W, Ti)C and a decrease in the concentration of cobalt induce an increase in the hardness of the resulting spherical particles from 1410HV0.05 to 2540HV0.05.

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“…Recent research on NC materials has revealed notable advancements in mechanical characteristics, including high tensile strength [ 6 , 7 , 8 ], high hardness [ 9 , 10 ], outstanding fatigue resistance [ 11 , 12 ], and exceptional wear resistance [ 13 , 14 ]. There are several methods for manufacturing NC materials such as high energy ball milling (HEBM) [ 15 , 16 , 17 ], cryomilling [ 18 , 19 , 20 , 21 ], rapid solidification [ 22 ], spark erosion [ 23 ], chemical precipitation [ 24 ], chemical vapor deposition (CVD) [ 25 ], etc. For solid-state powder processing, mechanical attrition methods such as HEBM and cryomilling are very effective in large-scale production [ 26 , 27 ].…”

Section: Introductionmentioning

confidence: 99%

Manufacturing Bulk Nanocrystalline Al-3Mg Components Using Cryomilling and Spark Plasma Sintering

2022

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In the current study, pure aluminum (Al) powders were cryomilled with and without 3 wt.% pure magnesium (Mg) dopant for varying durations followed by spark plasma sintering (SPS) of powders to prepare bulk components with superior mechanical properties. The crystallite sizes were determined for powders and the bulk components by analyzing the X-ray diffraction (XRD) spectrum. The calculations indicated a reduction in crystallite size with the increase in the cryomilling duration. The results also showed a more significant decrease in the crystallite sizes for Al-3Mg samples than that of pure Al. The changes in the surface morphology of powders were characterized using scanning electron microscopy (SEM). The elemental mapping analysis at nanoscale was carried out using Energy-dispersive X-ray spectroscopy (EDX) in Scanning transmission electron microscopy (STEM). The mechanical properties of the bulk components were assessed using a Vickers Microhardness tester. The test results demonstrated an improvement in the hardness of Mg-doped components. Higher hardness values were also reported with an increase in the cryomilling duration. This article discusses the mechanisms for the reduction in crystallite size for pure Al and Al-3Mg and its subsequent impact on improving mechanical properties.

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Production of W-based nanoparticles via spark erosion process along with their characterization and optimization for practical application in gas sensor

Cited by 8 publications

References 37 publications

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

Nanocrystalline Materials: Synthesis, Characterization, Properties, and Applications

Influence of Liquid Composition and Discharge Energy on Process Performance, Composition, and Properties of Particles Formed During Electric Discharge Erosion of WC-5TiC-10Co Alloy

Manufacturing Bulk Nanocrystalline Al-3Mg Components Using Cryomilling and Spark Plasma Sintering

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