A Review on Binderless Tungsten Carbide: Development …
On account of the reason above, considerable studies have paid overwhelming attention to the development of BTC. As pioneered by Kanemitsu [] in 1982, BTC, also named binderless cemented carbide, is tungsten carbide free of any metallic binder including cobalt, iron, and nickel.As shown in Fig. 1, because of the absence of …
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Erosion and Corrosion Behavior of Laser Cladded Stainless …
Laser cladding of tungsten carbide (WC) on stainless steels 13Cr-4Ni and AISI 304 substrates has been performed using high power diode laser. The cladded stainless steels were characterized for microstructural changes, hardness, solid particle erosion resistance and corrosion behavior. Resistance of the clad to solid particle …
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Mechanical Behavior in Tungsten Carbide-Reinforced
Request PDF | Mechanical Behavior in Tungsten Carbide-Reinforced Aluminum Composites | In rubbing components, the wear property of the material is found to be a significant consideration. To ...
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Sintering of tungsten powder with and without tungsten carbide additive
The tungsten powder (W) used in this study was supplied by Global Tungsten & Powders in M10 grade with particle size in the range of 0.6–0.9 μm.The maximum oxygen content was 0.4 wt.% as reported by the manufacturer.The tungsten carbide powder (WC) was supplied by Kennametal and has particle size around 0.1–0.2 …
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A comprehensive review on synergy effect between
Tungsten carbide materials mainly composed of hard refractory WC phase in a soft, ductile, metal matrix binder phase generally cobalt (Co), since Co shows good solubility and excellent wettability behavior with respects to WC particles [3]. However, Ni and Fe are also used as binder materials, but using these elements has limited the ...
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Inelastic behavior of tungsten carbide at high pressures
Tungsten carbide exhibits the material behavior of a high-density heavy metal, on the one hand, and a brittle-like ceramic on the other. In the current work, the applicability of both ductile and brittle material models are considered for describing the dynamic mechanical behavior of WC.
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Tungsten Carbide
Tungsten carbide NPs are used to produce extreme hardness and wear resistance in hard metals. Doping of tungsten carbide with cobalt further improves toughness and strength …
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Synthesis and Sintering of Tungsten and Titanium Carbide: …
The three primary steps in the production of tungsten carbide WC and titanium carbide TiC powders are the preparation of the green mixture, carbidization by furnace annealing, and ball milling of the annealed products. This work performed a comprehensive parametric investigation of these three steps. The impact of several …
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High-entropy carbide ceramics: a perspective review | Tungsten …
High-entropy carbide ceramics (HECCs) exhibited a series of property superiority, such as high hardness, high oxidation resistance and adjustable range of thermal conductivity, making them great candidates for structural materials used in extreme service conditions. However, current HECC-related reports can only provide limited …
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A study on tool wear of tungsten carbide cutters in edge …
The combination of tool material, tool geometry, and cutting conditions strongly influence the tool life and surface quality of the machined parts. Edge trimming of CFRP blanks with tungsten carbide two flute end mill cutter was conducted. The operation was carried out on a computer numerical control (CNC) router by varying cutting speed, …
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Experimental investigation into tungsten carbide …
Levy, R.B. and Boudart, M.: Platinum-like behavior of tungsten carbide in surface catalysis. Science 181, 547 – 549 ( 1973 ). CrossRef Google Scholar PubMed
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Sub-micron binderless tungsten carbide sintering behavior under …
In this work, our study showed that high pressure could inhibit abnormal grain growth and enhance the relative density of tungsten carbide. High hardness tungsten carbide obtained at high temperature and high pressure (highest hardness as 2925 kg·m − 2 at 1500 °C and 5 GPa holding 20 min). HPHT condition makes strong grain boundary …
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Tungsten carbide molds for precision glass molding
The binders and WC powder of the substrates would evolve into cobalt or nickel oxides, tungsten oxides, and carbon oxides, which give rise to the deterioration of microstructure and performance [[13], [14], [15]]. Casas et al. [16] investigated the oxidation behavior and the room-temperature flexural strength of WC-Co alloys exposed to 700 °C ...
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Electronic Structure and Catalytic Behavior of …
Tungsten carbide has been shown to be an effective catalyst for a number of reactions that are readily catalyzed by platinum, but not at all by tungsten, and it was speculated …
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Development of tungsten fiber-reinforced tungsten with a …
Nanosized carbides in the grains and the carbide layer on the grain boundaries are formed during the production process. This carbon contamination will cause embrittlement of the tungsten fibers. ... Riesch J, Coenen J W, Hoschen T, Linsmeier C and Neu R 2017 Tensile deformation behavior of tungsten fibre-reinforced tungsten …
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Wear properties of carbon-rich tungsten carbide films
Thin tungsten carbide films were deposited by magnetron sputtering in an industrial-scale coating chamber at Robert Bosch Manufacturing Solutions in Stuttgart. As sputtering target, tungsten carbide (WC) with a cobalt binder (5–6 at.%) was used. ... This behavior arises from the segregation of group VB (Nb) and VIB (Mo) …
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Tungsten Carbide – Wissensplattform …
Tungsten Carbide. Tungsten carbide is a hard metal and used in wear-resistant ceramics due to its exceptional hardness and stability, e.g. for the manufacturing of nozzles or tools. By adding metals like cobalt, iron or …
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Electrochemical behavior of tungsten carbide-cobalt alloy …
Tungsten carbide-cobalt alloys (WC–Cos), which are used for cutting tools, are mainly composed of tungsten carbide and cobalt with minor elements including chromium, tantalum, nickel. Recycling WC–Cos requires a large amount of energy and chemicals for leaching tungsten. We previously showed that tungsten in WC–COs can …
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Electronic Structure and Catalytic Behavior of Tungsten Carbide
Abstract. Tungsten carbide has been shown to be an effective catalyst for a number of reactions that are readily catalyzed by platinum, but not at all by tungsten, and it was speculated that this behavior is due to changes in the electron distribution when carbon is added to tungsten. A test of this hypothesis, made by measuring the valence ...
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Technical Fact Sheet
Tungsten ore is used primarily to produce tungsten carbide and tungsten alloys, which are used in many general welding and metal-cutting applications, in making drilling equipment for oil wells, and in operations within the aerospace industry. Tungsten metal is also used to produce lamp filaments, X-ray
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Oxidation Behavior of Tungsten Carbide-6% Cobalt Cemented Carbide
This paper examines the oxidation behavior of annular tungsten carbide-6% cobalt binder samples, after exposure to air furnace temperatures in the range 500–1100 °C. An unreacted shrinking core model is supported by evidence of surface reactions on the OD surface. However, significant changes are noted on the ID surface of the annulus, …
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Tribological Properties and Microstructures of Tungsten Carbide …
The present work investigates the tribological properties and microstructures of tungsten carbide (WC: 0–30 wt%) and few-layer graphene (FLG: 0.1–0.5 wt%)-reinforced aluminum matrix composites fabricated via the powder metallurgy route. The tribological and mechanical behavior of the produced samples were investigated by the …
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Tribocorrosive Aspects of Tungsten Carbide, Silicon Nitride, …
Under lubrication by purified water, tungsten carbide-based metal matrix composite (MMC) with NiCr binder and silicon nitride-based ceramic (SiAlON) against DIN/EN 1.4108 steel yielded coefficients of friction above unity. ... Human, A.M.; Exner, H.E. Electrochemical Behaviour of Tungsten-Carbide Hardmetals. Mater. Sci. Eng. A 1996, …
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Corrosion behavior of Ni-based coating containing spherical tungsten …
A Ni-based alloy coating with 30 wt.% spherical tungsten carbide particles was prepared through plasma transferred arc welding on 42CrMo steel. The composition and microstructure of the coating were examined through X-ray diffraction and scanning electron microscopy with energy-dispersive spectrometry. The corrosion behaviors of the …
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Analysis on carbonization evolution behavior of …
Abstract. In this article, the microstructural evolution of tungsten carbide (WC) powder with coarse particle size was studied. The WC powders were prepared by directly carbonizing tungsten powders of 8.5 μm in Fisher sub-sieve size (FSSS) under various conditions. …
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Frontiers | Effect of Y2O3 Addition on High-Temperature …
Observation and Analysis of Oxidized Surfaces and Cross-Sections. Figure 3 presents the surface morphologies of the oxidation layer of binderless tungsten carbide with different Y 2 O 3 contents and of YG3 cemented carbide that are oxidized at 800°C for 60 min. Figure 3A,B show that there are many pores uniformly distributed on the surface …
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Transition Metal Induced the Contraction of Tungsten Carbide …
Tungsten carbide (WC) materials have exhibited platinum-like catalytic behavior in many fields, whereas the adsorption of pure tungsten carbide for H is too strong and demonstrates low activity for hydrogen evolution reaction (HER). Herein, we successfully introduced transition metal into WC lattice and optimized the electron …
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Selective synthesis of tungsten carbide phases W2C and …
Tungsten carbides are possible low-cost replacements for noble metal catalysts, but the role of different carbide stoichiometries (W 2 C, WC) and their polymorphs for catalytic behavior is poorly understood. We develop a "dynamic, isothermal" carburization of WO 3 in a mixture of CH 4 and H 2 to control phase composition and …
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Investigation on the ablation behavior of cemented tungsten carbide …
The precision machining of hard and ultra-hard materials by the laser beam is a key subject in the field of the modern manufacturing process.To improve the surface quality, the ablation threshold of a single pulse and the influence of the laser parameters on the surface characteristics of cemented tungsten carbide (WC-8Co) are firstly quantified …
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High-entropy carbide ceramics: a perspective review …
Tungsten. Article. High-entropy carbide ceramics: a perspective review. Review Paper. Published: 17 May 2021. 3, 131–142 ( 2021 ) Download PDF. Tungsten …
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