WC-5TiC-10Co hard metal alloy fabrication via mechanochemical and SPS techniques

Buravlev, I. Yu.; Shichalin, O.O.; Папынов, Е. К.; Golub, A. V.; Гридасова, Е. А.; Buravleva, A.A.; Yagofarov, V. Yu.; Дворник, М. И.; Fedorets, A. N.; Рева, В. П.; Yudakov, A. A.; Сергиенко, В. И.

doi:10.1016/j.ijrmhm.2020.105385

Cited by 44 publications

(10 citation statements)

References 56 publications

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“…Благодаря сочетанию высокой прочности, твердости и износостойкости твердые сплавы находят широкое применение в промышленности [1][2][3][4][5][6][7][8][9]. Получение из порошков WC-Co и WC-TiC-Co ультрамелкозернистых порошков и твердых сплавов с высокой твердостью и износостойкостью является важным направлением порошковой металлургии в настоящее время [3,[10][11][12][13][14][15][16].…”

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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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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show abstract

“…However, due to the correlation of S, ρ, and κ, the optimization of the zT value is a difficult task. High quality thermoelectric materials need The commonly used solid phase synthesis methods with different powders are spark plasma sintering (SPS), hot isostatic pressing (HIP), cold isostatic pressing (CIP), and high temperature solid sintering [42][43][44]. The synthesis method chosen in this experiment is high temperature solid phase sintering.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Phase Diagram of CaO-CoOx-ErOy and Crystal Structure of Perovskite (Ca3−xErx)Co2O6−z Solid Solution

et al. 2023

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In this work, a series of compounds in the CaO-CoOx-ErOy ternary oxide system were synthesized in air at 885 °C, using a high temperature solid-phase synthesis method. The phase boundary of each solid solution region in the CaO-CoOx-ErOy system was determined by X-ray powder diffraction techniques. The phase diagram of the CaO-CoOx-ErOy system at 885 °C includes three series of ternary oxide solid solutions: (Ca3−xErx)Co4O9−z (0 ≤ x ≤ 0.9), (Ca3−xErx)Co2O6−z (0 ≤ x ≤ 1.25), and (Er1−xCax)CoO3−z (0 ≤ x ≤ 0.33). Four three-phase regions and five solid solution tie-line regions were obtained. The structure of the perovskite solid solution (Ca3−xErx)Co2O6−z has been analyzed by Rietveld refinements. With the increase of Er content, the cell parameters of (Ca3−xErx)Co2O6−z exhibit a decreasing trend in a and b directions and an increasing trend in c direction. A brief comparison of the phase diagrams of the CaO-CoOx-ROy (R = La, Dy, and Er) systems in air at 885 °C is provided.

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“…Publications of recent years show that the technology of alloy production of this standard system is developing, in particular, by microwave synthesis [ 59 ]. Hard alloys produced by SPS [ 60 ] and a combination of mechanochemistry and SPS [ 61 ] are being synthesized. SPS has proven to be a perfect method for consolidation of various applications [ 36 , 55 , 62 , 63 , 64 ], porosity reduction for materials where high density is a critical property [ 65 ], including hard alloys and high-temperature materials [ 66 , 67 , 68 ], and coating [ 69 , 70 , 71 ].…”

Section: Introductionmentioning

confidence: 99%

Spark Plasma Sintering of WC-Based 10wt%Co Hard Alloy: A Study of Sintering Kinetics and Solid-Phase Processes

et al. 2022

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The paper describes the method for producing WC-10wt%Co hard alloy with 99.6% of the theoretical density and a Vickers hardness of ~1400 HV 0.5. Experimental data on densification dynamics, phase composition, morphology, mechanical properties, and grain size distribution of WC-10%wtCo using spark plasma sintering (SPS) within the range of 1000–1200 °C are presented. The high quality of the product is provided by the advanced method of high-speed powder mixture SPS-consolidation at achieving a high degree of densification with minimal calculated grain growth at 1200 °C.

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WC-5TiC-10Co hard metal alloy fabrication via mechanochemical and SPS techniques

Cited by 44 publications

References 56 publications

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

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

Analysis of Phase Diagram of CaO-CoOx-ErOy and Crystal Structure of Perovskite (Ca3−xErx)Co2O6−z Solid Solution

Spark Plasma Sintering of WC-Based 10wt%Co Hard Alloy: A Study of Sintering Kinetics and Solid-Phase Processes

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