Isostatic Hot Pressed W-Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

Article Chemistry, Physical

WCu composites fabrication and experimental study of the shielding efficiency against ionizing radiation

M. G. Dong et al.

Summary: The study aimed to investigate the radiation shielding features of high-density W-Cu composite materials. The results showed that the discussed composites are suitable for radiation protection.

RADIATION PHYSICS AND CHEMISTRY (2022)

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Article Materials Science, Multidisciplinary

A corrosion study on W-Cu alloys in sodium chloride solution at different pH

Dawei Guo et al.

Summary: The corrosion behavior and preferentially attacked phases of W-Cu alloys were found to alter with pH in solution. The micro-galvanic effect of tungsten phase and copper binder played a significant role in the corrosion process.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2021)

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Article Engineering, Manufacturing

Fabrication and experimental investigation of arc erosion behavior in W/Cu functionally graded composites

Ramezan Ali Mahdavinejad et al.

Summary: This study proposed a functionally graded composite technique to produce W/Cu alloy electrical contact material, finding that the intermediate layer had completed the sintering process with low porosity and high hardness. It was also discovered that multi-layered FGC showed better erosion resistance, improved heat transfer, and reduced surface damage.

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE (2021)

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Article Metallurgy & Metallurgical Engineering

Influence of starting powders on the final properties of W-Cu alloys manufactured through rapid sinter pressing technique

Eva Maria Perez-Soriano et al.

Summary: This study investigates the manufacturing of W-Cu alloys through advanced powder metallurgy, with Rapid Sinter Pressing chosen as the technique. By fixing processing parameters and using different particle sizes of starting powder materials, the study analyzes the impact on properties such as hardness, density, and thermal conductivity. Microstructural characterization reveals that the best distribution is achieved when using intermediate size W particles and fine Cu particles, with the composition of 80W-20Cu resulting in the best combination of properties.

POWDER METALLURGY (2021)

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Article Materials Science, Coatings & Films

Additive manufacturing of tungsten using directed energy deposition for potential nuclear fusion application

Jichang Xie et al.

Summary: This study focused on depositing pure tungsten on steel substrates using directed energy deposition (DED) technology, and demonstrated the potential to optimize processing parameters to improve thermal performance. The results showed that the manufactured thick deposited layer by high-low combined laser scanning speed can reach a high tungsten content of up to 99.78 wt%, suggesting promising applications in the manufacturing process of thermonuclear fusion devices.

SURFACE & COATINGS TECHNOLOGY (2021)

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Article Chemistry, Physical

Electrodeposition conditions-dependent crystal structure, morphology and electronic properties of Bi films

Alexander Fedotov et al.

Summary: The study focuses on the electronic properties and structure of bismuth films obtained through electrodeposition from high-speed perchlorate electrolyte, revealing specific changes in characteristics. By characterizing the structure, microstructure, and electronic properties of Bi films, combined with the impact of current density increase on grain size and shape, differences in electronic characteristics of Bi films electrodeposited under different currents and electrolyte composition were explained.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Materials Science, Multidisciplinary

Laser powder bed fusion additive manufacturing of highly conductive parts made of optically absorptive carburized CuCr1 powder

Suraj Dinkar Jadhav et al.

Summary: This article explores the use of optically absorptive surface-modified copper powders for fabricating fully dense and highly conductive copper alloy parts via laser-based additive manufacturing (L-AM). It discusses the densification mechanism of parts and the distinct processing behaviors of different surface-modified powders. The advantage of a firmly bonded modified layer present on the surface of carburized CuCr1 powder over a loosely attached carbon nanoparticle layer in carbon-mixed CuCr1 powder is clearly outlined, with customized final properties achievable through tailored post-heat treatments.

MATERIALS & DESIGN (2021)

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Article Engineering, Manufacturing

Characterization of laser-powder interaction and particle transport phenomena during laser direct deposition of W-Cu composite

Guangyuan Wang et al.

Summary: The study investigated the process of laser direct deposition to produce W-Cu composite material, focusing on the laser-powder interaction and particle transport phenomena. By establishing models and conducting simulations, the research successfully explained the microstructure formation of W-Cu composites during laser deposition.

ADDITIVE MANUFACTURING (2021)

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Article Engineering, Manufacturing

Directed energy deposition additive manufacturing of functionally graded Al-W composites

J. P. Kelly et al.

Summary: DED-L additive manufacturing method can create continuously graded Al/W composite materials, which can be used for studying material behavior under extreme conditions. Compared to conventional methods, the manufacturing time is shorter, and deposition can be scaled essentially without limit in lateral directions.

ADDITIVE MANUFACTURING (2021)

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Article Chemistry, Physical

In situ synthesis of core-shell W-Cu nanopowders for fabricating full-densified and fine-grained alloys with dramatically improved performance

Xiaojing Li et al.

Summary: A new one-step thermal plasma synthesis route was developed to construct core-shell W-Cu nanoparticles with size about 30 nm, addressing the issues of homogeneous elemental distribution and short diffusion distance for Cu to form network around W grains. The synthesized nanocomposite powders facilitated fast densification with uniform microstructure and suppressed W grain growth, resulting in a compact with high relative density and hardness.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Multidisciplinary

Effect of Nano Copper on the Densification of Spark Plasma Sintered W-Cu Composites

Vadde Madhur et al.

Summary: In this study, W-Cu composites were fabricated by adding various amounts of nano-copper to tungsten, showing improvements in densification, strength, hardness, and electrical conductivity with increasing copper content. Fractography analysis of tensile tested samples revealed a mixed-mode of fracture, and an increase in nano-copper content resulted in higher electrical conductivity.

NANOMATERIALS (2021)

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Article Chemistry, Physical

Excellent wear resistance of multicomponent nanocrystalline W-Cu based composite

Yurong Li et al.

Summary: An in-situ reaction strategy was proposed to synthesize a multicomponent nanocrystalline W-Cu based composite co-doped with Cr and WC. The material obtained has a homogeneous distribution of various phases and shows significant improvements in hardness and wear resistance compared to conventional coarse-grained W-Cu composite. This enhancement is attributed to the restricted formation and delamination of the mechanically mixed layer, as well as the increased strain gradient induced by the hard phases on the worn surface.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Physical

Effects of Bonding Treatment and Ball Milling on W-20 wt.% Cu Composite Powder for Injection Molding

Mingliang Ouyang et al.

Summary: Powders processed with bonding treatment and ball milling (BTBM) showed improved characteristics, leading to enhanced densification and dimension precision of the feedstock, as well as improved properties of the sintered samples.

MATERIALS (2021)

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Article Engineering, Manufacturing

Manufacturing of complex diamond-based composite structures via laser powder-bed fusion

Loic Constantin et al.

Summary: This research demonstrates that adding steps to LPBF can improve the quality of MMC structures, leading to more efficient manufacturing and enhanced performance.

ADDITIVE MANUFACTURING (2021)

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Article Chemistry, Physical

Radiation shielding and mechanical properties of Bi2O3-Na2O-TiO2-ZnO-TeO2 glass system

M. Sayyed et al.

Summary: In this study, the influence of Bi2O3 on the mechanical and radiation shielding properties of Bi2O3-ZnO-TiO2-Na2O-TeO2 glass system was investigated. It was found that the addition of Bi2O3 improved the radiation protection efficiency of the glasses. Results showed that the mass attenuation coefficient and transmission factor were affected by the glass composition and thickness.

RADIATION PHYSICS AND CHEMISTRY (2021)

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Article Chemistry, Physical

Effect of Microstructure Refinement on Surface Morphology and Dynamic Mechanical Properties of W-Cu Alloys

Fei Ding et al.

Summary: The study demonstrates that refining tungsten grains can improve the dynamic mechanical properties of W-Cu alloys under impact loading, significantly reduce the fracture probability of tungsten phases. The shear strength of gold studs on the coating increased by 33% after grain refinement, indicating that grain refinement has a significant effect on enhancing coating performance.

MATERIALS (2021)

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Article Chemistry, Physical

Experimental and Theoretical Study of Radiation Shielding Features of CaO-K2O-Na2O-P2O5 Glass Systems

M. Sayyed et al.

Summary: Experimental studies on the gamma radiation shielding ability of CaO-K2O-Na2O-P2O5 glasses reveal different values for the effective atomic number, mean free path, and half value layer as energy levels vary. Decreasing P2O5 content in the glasses enhances radiation protection efficiency. Among the samples, KCNP40 shows the best potential for photon attenuation applications.

MATERIALS (2021)

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Article Materials Science, Ceramics

Phase transformations and changes in the dielectric properties of nanostructured perovskite-like LBZ composites as a result of thermal annealing

Maxim Zdorovets et al.

CERAMICS INTERNATIONAL (2020)

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Article Materials Science, Multidisciplinary

Fabrication of ultrafine W-Cu composite powders and its sintering behavior

Jun-Kai Liu et al.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2020)

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Article Chemistry, Physical

Microstructure and mechanical properties investigation of W-Cu composites prepared from dual-layer coated powders

Yuan Li et al.

APPLIED SURFACE SCIENCE (2020)

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Article Chemistry, Multidisciplinary

Early-Stage Growth Mechanism and Synthesis Conditions-Dependent Morphology of Nanocrystalline Bi Films Electrodeposited from Perchlorate Electrolyte

Daria Tishkevich et al.

NANOMATERIALS (2020)

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Editorial Material Materials Science, Multidisciplinary

W-Cu metal matrix composites for next generation fusion devices

E. Tejado

MATERIALS TODAY (2020)

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Article Materials Science, Multidisciplinary

Achieving both high conductivity and reliable high strength for W-Cu composite alloys using spherical initial powders

Longchao Zhuo et al.

VACUUM (2020)

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Article Chemistry, Physical

Function composites materials for shielding applications: Correlation between phase separation and attenuation properties

D. I. Tishkevich et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2019)

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Article Multidisciplinary Sciences

Ice-Templated W-Cu Composites with High Anisotropy

Andre Rothlisberger et al.

SCIENTIFIC REPORTS (2019)

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Article Chemistry, Physical

Preparation and characterization of nanosized W-Cu powders by a novel solution combustion and hydrogen reduction method

Xi Zhu et al.

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Binder jet printing of tungsten heavy alloy

Michael T. Stawovy et al.

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2019)

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The crystallization character of W-Cu thin films at the early stage of deposition

Tianle Xie et al.

THIN SOLID FILMS (2019)

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Elaborating the Cu-network structured of the W-Cu composites by sintering intermittently electroplated core-shell powders

Jianqiang Li et al.

JOURNAL OF ALLOYS AND COMPOUNDS (2019)

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Review Materials Science, Multidisciplinary

W-Cu composites with submicron- and nanostructures: progress and challenges

Chao Hou et al.

NPG ASIA MATERIALS (2019)

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Synthesis of W-Cu composite nanoparticles by the electrical explosion of two wires and their consolidation by spark plasma sintering

A. V. Pervikov et al.

MATERIALS RESEARCH EXPRESS (2019)

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Criteria for the Rational Copper Infiltration of a Porous Refractory Skeleton during the Production of a W-Cu Pseudoalloy

G. G. Bondarenko et al.

RUSSIAN METALLURGY (2019)

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Microstructure and Processing of 3D Printed Tungsten Microlattices and Infiltrated W-Cu Composites

Micha Calvo et al.

ADVANCED ENGINEERING MATERIALS (2018)

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Densification and properties investigation of W-Cu composites prepared by electroless-plating and activated sintering

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INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2018)

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Laser 3D printing of W-Cu composite

Zhenghong Liu et al.

MATERIALS LETTERS (2018)

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The process of surface carburization and high temperature wear behavior of infiltrated W-Cu composites

Wenge Chen et al.

SURFACE & COATINGS TECHNOLOGY (2018)

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Article Nuclear Science & Technology

Melt infiltrated tungsten-copper composites as advanced heat sink materials for plasma facing components of future nuclear fusion devices

A. Von Mueller et al.

FUSION ENGINEERING AND DESIGN (2017)

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Obtaining and Characterization of W-Cu Composite Powder Produced by Mixing and Sintering of Ammonium Paratungstate (Apt) and Copper Nitrate

Maria Jose Santos Lima et al.

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS (2017)

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From solid solutions to fully phase separated interpenetrating networks in sputter deposited immiscible W-Cu thin films

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Nanoscale segregation behavior and high-temperature stability of nanocrystalline W-20 at.% Ti

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Nanostructured W-Cu Electrical Contact Materials Processed by Hot Isostatic Pressing

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Manufacturing and testing of W/Cu mono-block small scale mock-up for EAST by HIP and HRP technologies

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INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS (2013)

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Selective laser melting W-10 wt.% Cu composite powders

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Isostatic Hot Pressed W-Cu Composites with Nanosized Grain Boundaries: Microstructure, Structure and Radiation Shielding Efficiency against Gamma Rays

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