Parametric study of silicon carbide coatings deposited in a fluidized bed
The silicon carbide was deposited from methyltrichlorosilane (MTS), CH3SiC13, in a bed of microspheres fluidized with hydrogen. The coating rate, the morphology, the microstructure and the density were studied as functions of temperature in the range 1225-1775 and with concentrations of 2.4-16.7 vol. MTS in hydrogen (HZ : …
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Advance in fluidized bed coating: An experimental investigation on …
The fluidized bed coating acts like a sort of dip painting, that is, the workpiece, preheated in an oven and, then, fed to a fluidization column and kept in a fixed position, is subjected to strikes from polymeric powders pushed all over the fluidization column by the fluid. Impinging onto the hot surface of the workpiece, the powder melts ...
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100 years of scaling up fluidized bed and circulating fluidized bed …
Polycrystalline silicon production in a fluidized bed. The fluidized bed reactor process is not without its challenges. With graphite reactors, heating is limited to the walls, which limits scale-up due to heat transfer challenges from the decreased surface to reactor volume ratio of larger units. Fines build-up in the freeboard region can also ...
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Control of stoichiometry, microstructure, and mechanical
Stoichiometric silicon carbide coatings the same as those used in the formation of TRISO (TRistructural ISOtropic) fuel particles were produced by the decomposition of methyltrichlorosilane in hydrogen. Fluidized bed chemical vapor deposition at around 1500 °C, produced SiC with a Young's modulus of 362 to 399 GPa. …
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Encapsulation: Fluidized bed coating technology
The Fluidized bed coating process as a developed pharmaceutical technique, is now strongly being applied in the food and pharmaceutical industry to tune the effect of functional ingredients, drugs, and additives (Hall and Pondel, 1980; Mehta et al., 1986).In this method, particles are introduced into the chamber and fluidized by air.
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Fluidized bed coating and granulation: influence of process …
The influence of nozzle position is examined during the fluidized bed coating of silica sand particles by NaCl solution [6]. The saline solution is introduced over the bed at three levels: 0.13, 0.23, and 0.33 m above the air distributor. Note that the 0.13-m level corresponds to the height of the fixed bed (H o). The results show that –
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Fluidized Bed Process with Silane | SpringerLink
Fluidized-Bed Process for Producing Silicon from Silane. Fluidized-bed technology works well with silane as the feed gas to make silicon. The FB reaction involves the deposition of silicon from silane onto small, heated particles of silicon that are suspended in a flow of feed gas as shown in Fig. 1. Fig. 1.
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Si-on-Graphite fabricated by fluidized bed process for high …
Preparation of silicon-graphite composites via fluidized bed for lithium-ion anodes. • High capacity silicon-on-graphite composites with ≈600 mAh g −1. • Ethyl cellulose enables strong adhesion of silicon nanoparticles on graphite. • Pitch coating improves electrical conductivity and stability of composite particles. •
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Understanding Fluidized Bed Powder Coating | Products …
Post heat it for one-and-a-half min at 350°F. This will normally produce a film build between 10–12 mils. On applications such as bike racks, where 30 mils of coating are desired, heat the part for six min at 550°F, dip it for 30 seconds and post heat it for one-and-a-half min at 400°F.
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Silicon coating on very dense tungsten particles by fluidized bed …
Tungsten particles were coated by silicon from silane (SiH4) at 645 °C using fluidized bed chemical vapor deposition (FB-CVD). The coated particles were made from a surrogate tungsten powder and ...
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Carbon coating optimization on porous silicon as high …
Semantic Scholar extracted view of "Carbon coating optimization on porous silicon as high-performance anode material via fluidized bed chemical vapor deposition" by Yi Tian et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 219,456,647 papers from all fields of science ...
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Parametric study of silicon carbide coatings deposited in a fluidized bed
Comparative analysis of the processes for preparation of high-density silicon carbide coatings by the fluidized-bed pyrolysis of the SiCl4 + CH4 + H2 + Ar and CH3SiCl3 + H2 + Ar mixtures on … Expand. 1. Save. TRISO coated …
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Fluidized Bed Plastic Coating
Fluidized Bed Powder Coating for Racks, Baskets, Brackets & More. A fluidized bed is a container of PVC or nylon powder that has air blown into it from the bottom. This air makes the solid powder "fluidize" or act like a liquid. Piper Plastics typically fluidizes both PVC and Nylon powders in a multitude of colors, and we have some ...
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CVD-Processes in Microwave Heated Fluidized Bed …
silicon and the coating of carbon materials with ceramics. Fluidized bed technology In order to understand dielectric heating of fluidized beds, some fundamentals of this technology are summarized. A fluidized bed is formed by an upwards streaming fluid passing through a particle bed. If the gas velocity is lower than
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