The invention discloses a copper-chromium-molybdenum ternary alloy coating and a preparation method thereof. The preparation method comprises the following steps of: dissolving a nitric acid with distilled water, adding sodium molebdate hexahydrate for stirring and dissolving, adjusting a pH value to be 1.5 to 3.3, sequentially adding lanthanum …Web
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Molybdenum powders (purity ≥ 99.9 wt%) with the particle size of 2–5 µm and copper powders (purity ≥ 99.9 wt%) of 3–6 µm were used as raw materials for the preparation of micron Mo-25Cu composite. Micron powders of Mo and Cu were mixed in a V-type mixer for 4 h before pressing to ensure uniform microstructure after sintering.Web
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C.I. Sargent, "The Production of Alloys of Tungsten and of Molybdenum in the Electric Furnace,"J. Am. Chem. Soc., 22(12), 783–791 (1980).(Equi Diagram; Experimental) Article Google Scholar . C. Lehmer, "Electrical Melting of Sulfidized Ores and Smelting Products Directly into Metals,"Metallurgie, 3, 596–602 (1906) in German.Web
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Abstract. In order to reduce the sintering temperature of the Mo–Cu composites, solution combustion synthesis was used to fabricate ultrafine Mo–Cu …Web
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The paper discusses methods of processing copper-containing molybdenite concentrates. A process flow diagram based on roasting with sodium chloride (or …Web
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Copper selenide is widely considered to be a promising candidate for high-performance flexible thermoelectrics; however, most of the reported ZT values of copper selenides are unsatisfactory at a relatively low temperature range. Herein, we utilized some wet chemical methods to synthesize a series of copper selenidWeb
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Abstract The structure and morphology of CVD molybdenum coatings in the MoCl5–Cd system on substrates made of copper, stainless steel (12Kh18N10T), and Inconel X750 and ZhS6U-VI high-temperature alloys were studied by X-ray diffraction, scanning electron microscopy, and using thermodynamic calculations by the Miedema …Web
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2.1 Physicochemical properties of materials. After the successful preparation of core–shell nanocomposites, methods of accurate physical characterization were checked to approve the anchored of MoO 3 and copper on the surface of Fe 3 O 4 @SiO 2.Firstly, the crystalline structure of Fe 3 O 4 @SiO 2 and Fe 3 O 4 @SiO 2 @Cu …Web
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Abstract The preparation, characterization, and catalytic activity of supported metal phosphides are reviewed. Reduction of metal compounds together with phosphate is a convenient method to prepare metal phosphides, but requires high temperature. Reduction with phosphite, hypophosphite, or phosphine and the plasma reduction of …Web
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Section snippets Synthesis of MoS 2. Synthesis process plays an important role in modulating the properties of electrode material. In order to improve desired properties, various methods have been used to synthesize MoS 2 nanoparticles. MoS 2 can be synthesized by two approaches. The top-down approach includes mechanical and …Web
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The preparation of industrial ammonium molybdate from molybdenum concentrate was conducted according to the process of roasting—leaching—purification—precipitation—crystallization. ... (0.020–0.035%) in Hubei province. So it's hard to select molybdenum resources. Copper and molybdenum …Web
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Preparation of materials. The molybdenum disulfide, copper powders, and flake graphite were employed as the starting materials. The molybdenum disulfide with a purity of 99.0% and an average particle size of 6 μm was provided by the Shanghai Linen Technology Development Co., Ltd. The copper powder with purity of 99.7% and an …Web
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2D copper molybdenum oxide-supported MoCu alloy nanoparticle photocatalysts are prepared via a facile hydrothermal and chemical reduction method. The MoCu nanocrystals with a size of less than 10 nm are formed through the reduction-alloying of metal ions and well dispersed on the surface of the copper molybdenum oxide …Web
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copper flotation circuits and were taken before entering the molybdenum circuit. The Morenci copper/molybdenum concentrate analyzed 0.2%-0.4% Mo and 28%-33% Cu, while the grade of the Copperton copper/molybdenum concentrate was 2.5%-4.1% Mo and 32%-34% Cu. The concentrates were received at 20%-35% solids. The particle size data …Web
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@article{osti_6769785, title = {Preparation of porous film of copper molybdenum sulfide by a solid-gas reaction}, author = {Wakihara, M and Morishita, T}, abstractNote = {Chevrel phases of the type M/sub x/Mo/sub 6/S/sub 8-9/ (M = metal ion) are an important class of compounds because of their interesting structural, superconducting, and ...Web
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Molybdenum (Mo) copper (Cu) composites combine the low coefficient of thermal expansion of molybdenum (α = 5.35*10 −6 1/K at room temperature [4]) with the …Web
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An inclusive review on the synthesis of molybdenum carbide and its hybrids as catalyst for electrochemical water splitting. Molecular Catalysis, 494 (2020), p. ... Silver-, calcium-, and copper molybdate compounds: preparation, antibacterial activity, and mechanisms. Biointerphases, 12 (5) (2017), Article 05G607. View in Scopus Google …Web
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Advanced Solutions for Mineral Processing. Used extensively for the flotation of sulfide minerals, Syensqo's flotation mining reagents are well-suited for the recovery of precious and base metals, such as gold, silver, platinum group metals, nickel, cobalt, lithium, molybdenum, phosphate, polymetallics, and copper.Web
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Although 2D MoS2 alone shows excellent gas-sensing performance, it is prone to stacking when used as the sensitive layer, resulting in insufficient contact with the target gas and lower sensitivity. To solve this, a 2D-MoS2/1D-CuPc heterojunction was prepared with different weight ratios of MoS2 nanosheets to CuPc micro-nanowires, and …Web
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A simple, potentially green and scalable ball-milling strategy was used to fabricate molybdenum disulfide quantum dots (MoS 2 QDs). In a typical experiment, a quantity of 5 g MoS 2 (Aladdin CAS-, 99.5 %) was mixed with 50 mL of either NMP (AR, Sinopharm Group Chemical Reagent) as the high-boiling point (≈202 °C) exfoliation …Web
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C. Preparation and performance testing of molybdenum-based carbon nanocomposites The modified carbon nanotubes were mixed with copper powder and molybdenum powder, mechanically activated, and reduced by hydrogen to obtain a mixed powder. Then, it was pressed and sintered at different temperatures to obtain molybdenum-basedWeb
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2.1 Preparation of catalysts ... According to XPS spectra in Fig. 9, the molar ratio of copper to molybdenum disulfide in sample 3-MCNTs@Cu@MoS 2 has also been determined by peak intensities of Cu p 3/2 and Mo d 5/2 core levels taking into account their photoionization cross sections. The amount of copper is around 4 percent of …Web
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Facile one-step hydrothermal preparation of molybdenum disulfide/carbon composite for use in supercapacitor. Int. J. Hydrogen Energy (2015) ... Nanocomposite of copper–molybdenum–oxide nanosheets with graphene as high-performance materials for supercapacitors. Journal of Alloys and Compounds, Volume 784, 2019, pp. 500-512 ...Web
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The preparation of disodium carboxymethyltrithiocarbonate (DCMT) was carried out according to the literature [18] and used as a depressant. Kerosene and 2# oil (pine oil) supplied by the China Molybdenum Co., Ltd. were used as collector and frother, respectively. ... In the present study, we carried out copper-molybdenum ore flotation ...Web
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Hence, the molybdenum recovery from multiple sources has been attractive, so much. Molybdenite (MoS 2) is known as the main source of Mo in its primary origin in the earth's crust (Adamski et al. 2019). Molybdenite concentrate, as the main by-product of copper smelting plant, contains a significant Mo and known as secondary sources of Mo.Web
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Summary. Molybdenum-copper-composites are promising materials for the thermal management of GaAs and GaN based devices. The thermophysical properties can be tailored to application demands. The through-plane thermal conductivity is typically ranging from 220 W/m/K to 270 W/m/K whith a CTE between. 6 ppm/K and 13 ppm/K.Web
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The impact of the preparation parameters on the structural properties of synthesized catalysts was reported by Choi et al. (1994). They proposed a two-step heat treatment of molybdenum trioxide MoO 3 in an NH 3 …Web
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The preparation of melamine-modified polyoxometalate and its derivatives and the study of supercapacitor performance are challenging. Herein, CuH{PMo 12 O 40}@Cu(Melamine) 3 (abbreviated as {PMo 12 O 40}@Cu-Melamine) was synthesized by solution method, and a novel nitrogen-doped carbon-coated copper and molybdenum …Web
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This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation flowsheet …Web
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Copper is an essential trace element that is included in some over-the-counter multivitamin and mineral supplements, even though copper deficiency is quite rare and supplementation is rarely needed. The amounts of copper found in typical supplements has not been associated with serum enzyme elevations or with clinically apparent liver …Web
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It can be used for preparation of tailored, specially designed, and complex-shape objects [5, 6]. A special case in amorphous alloys are materials containing significant amounts of either W or Mo. Tens of electrodeposited materials and alloys composed of tungsten and/or molybdenum have been already obtained [7, 8, 9]. Interestingly, the ...Web
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But, the preparation of Mo Cu or W Cu nanocomposites by MA will adversely affect the process of particle rearrangement at low sintering temperature [4,17,30,32]. It is difficult to control the uniform distribution of molybdenum (tungsten) and copper in sintered blocks, and the agglomeration of molybdenum (tungsten) phase or copper phase may …Web
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Potassic alteration within quartz diorite porphyry with primary bornite (68% copper) dominant with lesser chalcopyrite (33% copper), very minor molybdenite and pyrite CDH002 currently at 781mWeb
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This study examines the fate of molybdenum in the processing of copper ore in a Chilean processing plant. Molybdenum shares the path of Cu from grinding and …Web
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Molybdenum can be obtained directly or as a by-product of processing in copper mines. Porphyry copper deposits contain molybdenum in the form of …Web
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Nickel–copper–molybdenum catalyst precursors were prepared by the chemical precipitation method in the following way. An amount of 0.10 mol ammonium heptamolybdate and the required amount of nickel nitrate and/or copper nitrate (Sinopharm Chemical Reagent Company, China, Grade AR) were dissolved in deionized water with …Web
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range of 700–950°C at a pressure of 50 MPa for 10 min. The effect of preparation conditions on the micro-structure, crystal structure, and properties (density, hardness, …Web
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