Reactive wetting and infiltration of polycrystalline WC by molten Zr2Cu alloy

Zhao, Yanwei; Wang, Yujin; Zhou, Yu; Shen, Ping

doi:10.1016/j.scriptamat.2010.10.018

Cited by 33 publications

(9 citation statements)

References 19 publications

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“…As sintering time increases, the number of pores in the preform decreases by further infiltration by molten Zr 2 Cu. The MWCNTs uniformly embedded in the tungsten powder are transformed to tungsten carbide once the specimen is sintered for 12 h at 1400°C [23]. In the early sintering stage, MWCNTs decomposes to carbon particles at temperatures over 650°C, and the carbon atoms diffuse into the metal matrix [24].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of tungsten-based composites by solid binder mixing and sintering

Suh

Shin

2015

Powder Technology

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Section: Resultsmentioning

confidence: 99%

Fabrication of tungsten-based composites by solid binder mixing and sintering

Suh

Shin

2015

Powder Technology

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“…Based on the structure of the new ternary Zr x Cu y C z phase with the larger lattice parameter, a possible formation mechanism is proposed. Molten Zr 2 Cu alloy spontaneously penetrates into the WC preform under the capillary forces forming Zr‐C groups by the corrosion of WC . Since the solubility of C in the molten Cu phase is very low, the formation of ZrC x can be understood by considering the binary system Zr–C .…”

Section: Resultsmentioning

confidence: 99%

“…The preparation of the ZrC/W‐based composite used in the present work has been described in detail elsewhere . Alloy ingots with composition Zr 2 Cu were prepared by induction melting of 99.71% spongy Zr pieces and 99.99% electrolytic Cu plate in a purified argon atmosphere.…”

Section: Methodsmentioning

confidence: 99%

Ternary Phase Zr_xCu_yC_z in Reactively Infiltrated ZrC/W Composite

Zhao

Wang

Zhou

et al. 2011

Journal of the American Ceramic Society

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A new ternary Zr x Cu y C z phase is observed in the reactively infiltrated ZrC/W composite. The X-ray diffraction and transmission electron microscopy analyses reveal that the Zr x Cu y C z phase has a same rocksalt structure as ZrC, but possesses sixfold long-period structure with lattice constant of 2.88 ± 0.07 nm. This finding indicates the existence of Zr x Cu y C z compound, which expands the ternary carbides and nitrides permutation space.

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“…In our previous study, dense W doped ZrC (W-ZrC) composites were fabricated by hot-pressing as well as displacive compensation of porosity (DCP) method 13–16 . The research were mainly focused on the effect of sintering temperature, ZrC content and particle size on microstructure and mechanical properties of W-ZrC composites both at room and elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

Evolution of Phase, Microstructure and ZrC Lattice Parameter in Solid-solution-treated W-ZrC Composite

Jia

Chen

Rao

et al. 2017

Sci Rep

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Zirconium carbide (ZrC) reinforced tungsten (W) composite was hot-pressed at 2200 °C for 1 h in vacuum, which was subsequently heat treated in the temperature range of 2200 to 2500 °C for 1.5 or 2 h. The relative ratios of ZrC phase were 21.0, 23.3 and 25.9 mol.% for the mixture of starting powders, composites sintered for 1 h and solid-solution treated at 2500 °C for 1.5 h, respectively. The solid solubility of W in ZrC increased with the increment in heat-treating temperature and time to a maximum value of 18.9 mol.% at 2500 °C for 1.5 h. The lattice parameter of cubic ZrC phase diminished from 0.4682 nm in the starting powder to 0.4642 nm in the solid-solution composite treated at 2500 °C for 1.5 h. This work demonstrated that the relationship between the solid solubility of W in ZrC and the lattice parameter of ZrC is linear, with a slope of −1.93 × 10−4 nm/at.%. Overall, more W atoms diffused into ZrC lattice after heat treatment, meanwhile, the previous precipitated nano-sized W dissolved in the supersaturated (Zr,W)C solid-solution, as detected by SEM and TEM.

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Reactive wetting and infiltration of polycrystalline WC by molten Zr2Cu alloy

Cited by 33 publications

References 19 publications

Fabrication of tungsten-based composites by solid binder mixing and sintering

Fabrication of tungsten-based composites by solid binder mixing and sintering

Ternary Phase Zr_xCu_yC_z in Reactively Infiltrated ZrC/W Composite

Evolution of Phase, Microstructure and ZrC Lattice Parameter in Solid-solution-treated W-ZrC Composite

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Reactive wetting and infiltration of polycrystalline WC by molten Zr2Cu alloy

Cited by 33 publications

References 19 publications

Fabrication of tungsten-based composites by solid binder mixing and sintering

Fabrication of tungsten-based composites by solid binder mixing and sintering

Ternary Phase ZrxCuyCz in Reactively Infiltrated ZrC/W Composite

Evolution of Phase, Microstructure and ZrC Lattice Parameter in Solid-solution-treated W-ZrC Composite

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Ternary Phase Zr_xCu_yC_z in Reactively Infiltrated ZrC/W Composite