Ductile Co–Nb–B bulk metallic glass with ultrahigh strength

Dun, Chaochao; Liu, Haishun; Hou, Long; Xue, Lin; Dou, Lintao; Yang, Weiming; Zhao, Yucheng; Shen, Baolong

doi:10.1016/j.jnoncrysol.2013.12.004

Cited by 29 publications

(8 citation statements)

References 26 publications

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“…To date, these materials have found application in data storage, high-performance transformers, and pole tips for high-field magnets [2][3][4]. Together with their high strength and good corrosion resistance, ferromagnetic amorphous alloys may have a promising future in applications such as advanced functional and structural materials [5][6][7][8]. Additionally, most of the nanocrystalline soft magnetic systems are composed of a special nanometer duplex structure wherein randomly oriented nanoparticles with an average size from several to several tens of nanometers are dispersed in an amorphous matrix, resulting in nanocrystalline alloys exhibiting excellent soft magnetic properties [9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Co addition on the magnetic properties and microstructure of FeNbBCu nanocrystalline alloys

Xue

Yang

Liu

et al. 2016

Journal of Magnetism and Magnetic Materials

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Section: Introductionmentioning

confidence: 99%

Effect of Co addition on the magnetic properties and microstructure of FeNbBCu nanocrystalline alloys

Xue

Yang

Liu

et al. 2016

Journal of Magnetism and Magnetic Materials

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“…Amorphous alloys based on Co, Fe, Nb, B, and amorphous system of the type Co-Nb-B is easily fabricated using reaction technique of solid state and have good magnetic properties, thermal stability and a high saturation magnetization, high permeability, low coercivity and loss, which find their application in anti-theft security system, power electronics, telecommunications devices and automotive magnetism [4]. Similarly some alloys are based on amorphous alloys, and amorphous alloys of large volume (BMGs) as Co-Nb-B consisting of covalent bond formed by metalloid element (B) and a transition metal element with high cobalt modulus [5].…”

Section: Introductionmentioning

confidence: 99%

CHARACTERIZATION OF AMORPHOUS ALLOY Co87Nb46B15

Nascimento

Melnyk

2017

J. Chil. Chem. Soc.

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This paper presents a discussion of the processing and characterization of alloy Co 87 Nb 46 B 15 produced by rapid solidification, in which characterization techniques such as X-Ray Diffraction (XRD), scanning electron microscopy and spectroscopy Dispersion Energy (SEM / EDS) and magnetic properties were used, with the study of hysteresis curve. Several researches have been making on nanocrystalline materials, especially cobalt-base alloys, because of their thermodynamic stability, characterization and processing. Amorphous alloys have a structure of ultrafine, homogeneous grains with small crystal clusters in amorphous phase.

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“…Entre os grãos de Co-Nb-B existia ainda uma fase amorfa rica em boro e nióbio, contendo Boro e uma pequena quantidade de Cobalto dissolvido em soluto de Nióbio em forma de intermetálicos. Ligas amorfas têm o arranjo atômico desordenado que difere substancialmente das ligas cristalinas,pois também chamado de vidro metálico tem excelentes propriedades mecânicas, químicas,ópticas,térmicas e magnéticos, devido às suas estruturas amorfas serem compléxicas e únicas (DUN et al, 2014). As ligas amorfas podem ser distintamente obtidas por três processos: processo metalúrgico (solidificação rápida), redução química e eletrodeposição (SURYANARAYANA; KOCH, 2000).…”

Section: Introductionunclassified

Evolução Microestrutural da Fase Amorfa na Liga Co72Nb24B4

Nascimento¹,

Jamshidi²,

Barbosa³

2016

Semina: Tech. Ex.

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ResumoA evolução estrutural da fase amorfa na composição Co 72 Nb 24 B 4 foi processadas por fundição em forno a à arco e caracterizadas por difração de raios-x (DRX), microscopia eletrônica de varredura (MEV) e espectroscopia de energia dispersiva (EDS). A evolução da microestrutura amorfa leva a criação de um grupo de materiais com propriedades altamente desejáveis, com alta resistência mecânica, dureza e resistência à abrasão e à corrosão. Além disso, a formação de quantidade considerável de fase amorfa e a sua transformação parcial de fases cristalinas durante o processo de fusão no forno à arco foram revelados . Verificou-se igualmente que, na fundição ocorre mudanças de morfologia de pó entre a fase amorfa e cristalina, facilitando o surgimento de fases intermetálicas com lamelas,pequenos cristais regulares a base de óxidos e o seu tamanho aumenta inicialmente. The structural evolution of the amorphous phase in Co 72 Nb 24 B 4 composition was processed by casting furnace at the bow and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The evolution of the amorphous microstructure leads to the creation of a group of materials with highly desirable properties with high mechanical strength, hardness and resistance to abrasion and corrosion. Furthermore, the considerable amount of formation of amorphous phase and a crystalline phase partial transformation during the melting process in arc furnaces have been disclosed. It was also found that, in casting occur powder morphology changes between the amorphous and crystalline phase, facilitating the emergence of intermetallic phases with slides, small regular crystals based on oxides and their size increases initially.

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Ductile Co–Nb–B bulk metallic glass with ultrahigh strength

Cited by 29 publications

References 26 publications

Effect of Co addition on the magnetic properties and microstructure of FeNbBCu nanocrystalline alloys

Effect of Co addition on the magnetic properties and microstructure of FeNbBCu nanocrystalline alloys

CHARACTERIZATION OF AMORPHOUS ALLOY Co87Nb46B15

Evolução Microestrutural da Fase Amorfa na Liga Co72Nb24B4

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