PARTICLE-SIZE DISTRIBUTION INFLUENCE IN HIGH-SPEED EROSION OF ALUMINIUM

Experiments on the flow of air-solids mixtures through long straight lengths of brass and nylon pipe, under choking conditions, are described. The powders conveyed are polystyrene, silica, and steel shot. Experimentally determined pressure distribution curves are used to compute the variation of gas and solids, velocities, and temperatures along the pipes, taking into account the size distribution of each powder. The predicted values of gas and solids velocities are compared with experimental values obtained by pitot tube traversing, and a highspeed photographic technique, respectively.

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Effect of Several Cellulosic Binders on Particle Size Distribution of Granules Prepared by a High-Speed Mixer.

Chemical and Pharmaceutical Bulletin ◽

10.1248/cpb.41.2151 ◽

1993 ◽

Vol 41 (12) ◽

pp. 2151-2155 ◽

Cited By ~ 5

Author(s):

Hiroyasu KOKUBO ◽

Shinichiro NAKAMURA ◽

Hisakazu SUNADA

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Size Distribution ◽

High Speed

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The Effect of HCl-Thermal Pressure Hydrolysis and High-Speed Destruction of Chitin on Particle Size Distribution and Functional Group of Nano-chitin Compound

Current Research in Nutrition and Food Science Journal ◽

10.12944/crnfsj.8.1.18 ◽

2020 ◽

Vol 8 (1) ◽

pp. 197-205

Author(s):

Asri Silvana Naiu ◽

Siegfried Berhimpon ◽

Roike Iwan Montolalu ◽

Nickson J. Kawung ◽

Pipih Suptijah

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Size Distribution ◽

High Speed ◽

Functional Group ◽

Thermal Pressure

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Preparation of IC21 Spherical Powders by PREP Process

Journal of Physics Conference Series ◽

10.1088/1742-6596/2101/1/012055 ◽

2021 ◽

Vol 2101 (1) ◽

pp. 012055

Author(s):

Qingxiang Wang ◽

Zhu Zhen ◽

Shujin Liang

Keyword(s):

Particle Size ◽

Particle Size Distribution ◽

Size Distribution ◽

High Speed ◽

Distribution Data ◽

Powder Particle Size ◽

Rotating Electrode ◽

Composition Segregation ◽

Result Show ◽

Chemical Contents

Abstract The IC21 spherical powders with main content of Ni3Al were successfully manufactured by the high speed plasma rotating electrode process (HS-PREP). The powders particle size distribution fitted the mixed spraying model well. The chemical contents changes after melting were detected. The microstructure of the IC21 powders was formed by cellular crystal on the surface and dendrite inside, which was a typical PREP powder. The morphologies and properties of the irregular powders were also analyzed which indicated that the composition segregation and oxides inclusion of the electrode were the main reason for the formation. However, its proportion was less than 0.5%, which would not affect the additive manufacturing. The fundamental powder particle size distribution data for different rotating speeds was measured. The morphology and properties result show that the PREP could support qualified IC21 spherical powders with significant powder yields.

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Printing of Ultrathin Nanoparticulate Indium Tin Oxide Structures

Additional Conferences (Device Packaging HiTEC HiTEN & CICMT) ◽

10.4071/cicmt-tp31 ◽

2015 ◽

Vol 2015 (CICMT) ◽

pp. 000092-000102

Author(s):

Moritz Wegener ◽

Dieter Spiehl ◽

Florian Mikschl ◽

Xinxin Liu ◽

Andreas Roosen

Keyword(s):

Electrical Conductivity ◽

Particle Size ◽

Particle Size Distribution ◽

Size Distribution ◽

Inkjet Printing ◽

Indium Tin Oxide ◽

High Speed ◽

Organic Additives ◽

Glass Substrates ◽

Printing Processes

This contribution focusses on three printing techniques: inkjet printing, flexographic printing and gravure printing for the manufacture of ITO structures based on nanoparticular ITO inks. The quality and stability of nanoparticular inks depends mainly on the dispersing step and is reflected by the achieved particle size distribution. The particle size distribution of the ITO inks has a distinct influence on the optical and electrical properties of the deposited ITO structures. The optimization of nanoparticular ITO inks concerning rheological behavior, wetting behavior and resulting material performance is presented. Inkjet printing was used as a low speed method to manufacture structures in the range of 30 μm. It is shown how coffee-staining, a frequently arising problem in inkjet printing, can be prevented by different strategies. Nanoparticular ITO structures with layer thicknesses clearly below 1 μm were printed. Gravure and flexography printing are well-established industrial printing processes with printing speeds above 100 m/min. These high-speed printing processes were used to print structures on PET film and glass substrates. Different solvents, e.g., water and ethanol, solvent compositions and binder types were varied to optimize the resulting ITO structures. The printed structures in the range of 10 to 2000 μm with thicknesses down to 1 μm were evaluated concerning surface topography and electrical conductivity. The high inter-grain porosity and the used organic additives limit the electrical conductivity of nanoparticulate ITO structures. To further improve their electrical conductivity laser post-treatment of printed ITO structures was performed.

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Stability, Microstructure, and Rheological Properties of CaCO3 S/O/W Calcium-Lipid Emulsions

Foods ◽

10.3390/foods10092216 ◽

2021 ◽

Vol 10 (9) ◽

pp. 2216

Author(s):

Jie Zhang ◽

Gongwei Li ◽

Duoxia Xu ◽

Yanping Cao

Keyword(s):

Particle Size ◽

Calcium Carbonate ◽

Particle Size Distribution ◽

Soybean Oil ◽

Size Distribution ◽

High Speed ◽

Mean Square Displacement ◽

Suspension Stability ◽

Liquid Food ◽

The Stability

Calcium carbonate (CaCO3) is a commonly used fortified calcium, but poor suspension stability and easy precipitation seriously limited its food processing and products application. The formation of CaCO3 loaded microparticles based on the form of solid/oil/water (S/O/W) emulsion is a promising method to improve the dispersion stability of CaCO3 in liquid food. In this study, CaCO3, soybean oil, and sodium caseinate (NaCas) were used as the solid, oil, and W phase, respectively. The fabrication involved two steps: the S/O emulsion was prepared by adding CaCO3 into soybean oil by magnetic stirring and high-speed shearing, and then put the S/O crude emulsion into NaCas solution (W phase) to obtain S/O/W emulsion by high-speed blender. The particle size distribution, zeta potential, stability of the microsphere, infrared spectral analysis, and XRD of the S/O/W calcium-lipid microsphere were explored. The stability and rheological mechanism of S/O/W calcium-lipid emulsion were investigated by combining the microstructure, shear rheological, and microrheological properties. It was found that the emulsion particles have more uniform particle size distribution and no aggregation, and the stability of the emulsion was improved with increasing the content of NaCas. The mean square displacement (MSD) curve and solid-liquid equilibrium (SLB) value of S/O/W emulsion increased with the increase in NaCas concentration, and the viscosity behavior is dominant. The results of confocal laser microscopy (CLSM) and cryo-scanning electron microscopy (Cryo-SEM) showed that the three-dimensional network structure of S/O/W emulsions was more compact, and the embedding effect of calcium carbonate (CaCO3) was slightly improved with the increase in NaCas concentration. According to infrared spectrum and XDR analysis, the addition of CaCO3 into the emulsion system caused crystal structure distortion. This study provides a reference for solving the dispersibility of insoluble calcium salt in liquid food.

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