Investigation of the influence of pretreatment parameters on the surface characteristics of amorphous metal for use in power industry

Nieroda, Jolanta; Rybak, Andrzej; Kmita, Grzegorz; Sitarz, Maciej

doi:10.1016/j.molstruc.2018.01.081

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…As shown in Figure 2a,b, EOS did not show well-defined particles and the overall morphology was glassy. As the glassy morphology was characteristic property of noncrystalline material, 30 the amorphous nature of EOS verified in XRD (Figure 1) was cross-confirmed here. Although we could not define the particle size of EOS, there existed large micrometer particles ranging from a few micrometers to hundreds of micrometers (Figure 2a).…”

Section: Sem Zeta Potential and Dls Analysissupporting

confidence: 74%

Development of porous calcite structure from industrial waste for efficient adsorbent for protein

Khalid

2023

Bulletin Korean Chem Soc

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Porous adsorbent (PA) with high specific surface area and calcite surface was prepared from an industrial waste, electric arc furnace oxidizing slag (EOS). As the EOS is composed of silica and metal oxide nanoparticle like CaO, MgO, and so on, the metal oxide parts were selectively dissolved by acid treatment. The remained silica part exhibited porous structure due to the assembly of nanoparticles. Then, calcite was developed on the silica surface by simply titrating the silica framework with carbonate under basic condition. According to the x‐ray diffraction pattern and scanning electron microscopy, we could hypothesize that the EOS had dense texture of amorphous nanoparticles. On the other hand, the PA had well‐crystallized calcite particles with sufficient interparticle pores. The zeta potential of EOS shifted to positive region upon transformation to PA, possibly due to the change in surface‐exposed moiety from silica to calcite. The albumin adsorption profiled exhibited that the PA had very high protein adsorption capacity up to 3.33 mg‐protein/mg‐adsorbent at 5 mg/L of protein concentration, while the EOS itself did not show meaningful adsorption.

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Section: Sem Zeta Potential and Dls Analysissupporting

confidence: 74%

Development of porous calcite structure from industrial waste for efficient adsorbent for protein

Khalid

2023

Bulletin Korean Chem Soc

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“…At present, amorphous alloys are primarily used to fabricate amorphous filler metal with purpose of avoiding the grain coarsening and composition segregation of crystalline filler metal. By rapid cooling technology, amorphous filler metal could be fabricated into foils, so that they could be used as a preplaced preform 40,41 . Especially for the joints with small clearance, amorphous filler metal could be applied in an accurate and minimal amount.…”

Section: Characteristics Of the Bni-2 Amorphous Filler Metalmentioning

confidence: 99%

Microstructure and Properties of 3D Printed Inconel 718 Joint Brazed with BNi-2 Amorphous Filler Metal

et al. 2018

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Three dimensional (3D) printing technology has been widely used in metal manufacturing industry. This study focused on the vacuum brazing of 3D printed Inconel 718 superalloy with BNi-2 amorphous filler metal. Interfacial microstructure and element distribution revealed excellent wettability and spreadability of the filler metal as well as favorable brazability of the base material. Brazed joint could be divided into two distinct zones: isothermally solidified zone (ISZ) consisting of γ-Ni solid solution and diffusion-affected zone (DAZ) consisting of a large amount of precipitates besides γ-Ni solid solution. Microhardness reached peak values in DAZ. Although borides filled the gaps of base material's grains to restrict grain boundary sliding and restrain the expansion of gaps, but its high hardness and brittleness would cause DAZ turn into weaker region when external loads were very large. The complete diffusion of B indicated the completion of isothermally solidified process. Precipitate CrB 2 with high hardness and brittleness was the key point of reducing the joint strength. Shear strength of the brazed joint was up to 802 MPa, and fracture morphology presented a mixed ductile-brittle fracture.

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Surface Pretreatment

Higgins¹,

Hullcoop²,

Turgoose³

et al. 2019

Reference Module in Materials Science and Materials Engineering

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Investigation of the influence of pretreatment parameters on the surface characteristics of amorphous metal for use in power industry

Cited by 6 publications

References 9 publications

Development of porous calcite structure from industrial waste for efficient adsorbent for protein

Development of porous calcite structure from industrial waste for efficient adsorbent for protein

Microstructure and Properties of 3D Printed Inconel 718 Joint Brazed with BNi-2 Amorphous Filler Metal

Surface Pretreatment

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