Cooperative grain boundary and phase boundary migration for the grain growth in NbC-based cemented carbides

Labonne, Mathilde; Missiaen, Jean-Michel; Lay, S.

doi:10.1016/j.actamat.2021.117363

Cited by 15 publications

(2 citation statements)

References 23 publications

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“…Typical examples include: permanent magnets (NdFeB , [ 26 ] SmFeTiV [ 27 ] ), electrical contacts (WCu [ 28 ] ), bronze (CuSn [ 29 ] ), shape memory alloys (NiTiNb [ 30 ] ), 2D materials (MXene‐H 2 O [ 31 ] ), aluminum alloys (AlCuMgSi [ 32 ] ), magnetic ferrites (MnZn, [ 11,33 ] NiZn [ 11 ] ), refractory ceramics (BN, [ 34 ] SiC [ 35 ] ), biological materials (Silica‐H 2 O [ 36 ] ) etc. In the solid‐non‐metal/liquid‐metal system, the objective of liquid‐phase sintering is to take advantage of reduced friction between solid particles and bonding at solid–liquid interface, which will balance strength and ductility in many cemented carbides (WCCo, [ 37 ] NbCTi, [ 38 ] TiBFe, [ 39 ] HfB 2 Ni [ 40 ] etc.). In this work, we utilize the electrical/magnetic insulation ability of liquid‐non‐metal system to prepare SMCs.…”

Section: Resultsmentioning

confidence: 99%

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Bai

Liu

Bandaru

et al. 2023

Adv Funct Materials

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Soft magnetic composites (SMCs) are ungently demanded in high‐frequency power electronics for their large magnetization and high electrical resistivity. However, traditional cold‐pressed SMCs are faced with low mechanical strength and insulation instability, which severely restricts their applications. In this study, liquid‐phase sintering techniques to prepare FeSiAl/MoO3 SMCs are orginally employed, where consolidation and insulation of metallic magnetic particles are achieved in one step. The redox reaction between FeSiAl and MoO3 melt greatly reduces the interfacial energy, facilitates fully wetting of FeSiAl particles by MoO3 melt, and promotes the densification process during sintering. In the final FeSiAl/MoO3 SMC, FeSiAl particles are bonded covalently and insulated electrically/magnetically by the resultant Al2O3 transition layer, endowing the SMC with high crushing strength of 250 MPa, cut‐off frequency of 110 MHz, permeability of 35 (@1 MHz), and low power loss of 962 kW m−3 (5 MHz, 5 mT). This study provides alternative concept for designing new SMCs, and broadens the connotation and extension of liquid‐phase sintering.

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Section: Resultsmentioning

confidence: 99%

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Bai

Liu

Bandaru

et al. 2023

Adv Funct Materials

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“…For instance, the thermodynamic study of the growth law during the in situ formation of the reinforcement layers can reveal their formation mechanism and verify the accuracy of the experimental results. For example, M Labonne [19] et al calculated the grain growth constant KD of NbC by evaluating the NbC particle size in cemented NbC-12vol% Ni carbide after sintering at 1360 °C Fan [20] et al described the growth kinetics of vanadium carbide coatings on steel surfaces during thermal reactive deposition/diffusion (TRD) by deriving the following mathematical model. Zhong [21] et al reported the preparation of tungsten carbide reinforced ironbased surface composites by in situ solid-phase diffusion method, and analyzed the dynamics of the tungsten carbide-iron layer by measuring its thickness variation with heat treatment time and temperature.…”

Section: Introductionmentioning

confidence: 99%

Thermal/kinetic study of the formation mechanism of NbC-Fe composite layer on the surface of GCr15 prepared by hot pressure diffusion

Zhao

Yao

Wang

et al. 2023

Mater. Res. Express

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In this study, an NbC-Fe composite layer is in-situ prepared on the surface of GCr15 bearing steel. The formation mechanism of the composite layer was investigated in terms of thermodynamics, dynamics, and crystal structure transformation processes during the in-situ reaction. According to computational thermodynamics, the reaction at 1150-1200℃ allows NbC, Fe3C, Cr3C2, Cr7C3, and Cr23C6 phases to spontaneously react and stabilize in the Fe-C-Nb-CR system. The functional relationship between the growth thickness, time, and temperature of the NbC-Fe composite layer was obtained experimentally and via computational dynamics. Particularly, the growth activation energy, Q, of the NbC-Fe composite layer was calculated to be 367.06 kJ/mol. The combination of computational thermodynamic/kinetic research and experimental observation of crystal transformation data revealed that the formation mechanism of NbC in the NbC-Fe layer on the surface of GCr15 caused the C atoms in the bearing steel diffuse into the Nb plate and occupy the octahedral gap of the Nb unit cell to form NbC. In the formation mechanism of the NbC-Fe composite layer, C and Fe atoms partially migrated from the pearlite and diffused towards the direction of the Nb plate to form the NbC-Fe composite layer.

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Bibliometric review of carbon neutrality with CiteSpace: evolution, trends, and framework

Geng

Zhu

Maimaituerxun

2022

Environ Sci Pollut Res

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Cooperative grain boundary and phase boundary migration for the grain growth in NbC-based cemented carbides

Cited by 15 publications

References 23 publications

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Interfacial Reaction Enhanced Liquid‐Phase Sintering of Metal/Oxide Soft Magnetic Composite

Thermal/kinetic study of the formation mechanism of NbC-Fe composite layer on the surface of GCr15 prepared by hot pressure diffusion

Bibliometric review of carbon neutrality with CiteSpace: evolution, trends, and framework

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