Smart Powder Processing for Advanced Materials

Naito, Makio; Abe, Hiroya; Kondô, Akira; Yokoyama, Toyokazu; Huang, Chunmao

doi:10.14356/kona.2009013

Cited by 26 publications

(12 citation statements)

References 45 publications

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“…Thus to comply with the social needs and the environmental regulations, the control of particle emissions requires the development of clever filtration systems (Konstandopoulos and Papaioannou, 2008). On the other hand, the fabrication of advanced materials from aerosols promotes the development of new powder processing techniques (Milosevic et al, 2009;Naito et al, 2009;Yurteri et al, 2010). In all these cases, a proper knowledge of the dynamics of particleladen gases is needed to control the particle motion (Garcia-Ybarra et al, 2006;Rosner et al, 1992) and the deposition of particles on the walls confining the gas stream (Castillo and Rosner, 1989;Castillo et al, 1990; Garcia-Ybarra and Castillo, 1997).…”

Section: Introductionmentioning

confidence: 99%

Morphology and Nanostructure of Granular Materials Built from Nanoparticles

Castillo¹,

Martín²,

Rodríguez‐Pérez³

et al. 2014

KONA

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Nanopowders or nanoparticles can be used as building blocks for the preparation of new materials with a prescribed structure. Monte Carlo simulations have shown that the morphological properties (bulk porosity and surface roughness) of a granular deposit can be tailored by properly adjusting the velocity of the particles approaching the deposit. Based on these theoretical predictions, experiments have been conducted to prepare nanostructured materials from carbon nanoparticles. By electrohydrodynamic atomization of a liquid suspension (carbon nanoparticles dispersed in ethanol), an electrospray of small droplets is generated. The charged droplets are driven by the electric field with the ethanol evaporating along the droplet path, leaving dry nanoparticles that deposit on the collecting surface. The surface roughness of the resulting material has been characterized as a function of the voltage drop. Moreover, catalytic suspensions of platinum supported on carbon nanoparticles (Pt/C) in Nafion ®alcohol solutions have been electrosprayed over carbon paper to prepare electrodes for proton exchange membrane fuel cells (PEMFC). The fuel cell power density was measured as a function of the platinum loading and the range of parameters leading to optimal platinum utilization was obtained.

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Section: Introductionmentioning

confidence: 99%

Morphology and Nanostructure of Granular Materials Built from Nanoparticles

Castillo¹,

Martín²,

Rodríguez‐Pérez³

et al. 2014

KONA

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“…Nogi et al also estimated the relationship between the temperature of the container and the interface of the particles 7) . Some researchers have studied the synthesis of ceramic particles and the preparation of porous ceramics using a powder composite process 8,9,10,11,12) .…”

Section: Introductionmentioning

confidence: 99%

Development of Advanced Ceramics by Powder Composite Process

Tatami

Nakano

Wakihara

et al. 2010

KONA

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“…2 shows the process to fabricate SOFC anode using coated composite particles, i.e. NiO large core-particle coated with YSZ nanoparticles [5]. The composite particles provided well-organized electrode microstructure as shown in the figure, and resulted in good electrochemical performance.…”

Section: Structural Control Of Sofc Electrodesmentioning

confidence: 99%

“…The composite particles provided well-organized electrode microstructure as shown in the figure, and resulted in good electrochemical performance. As a result, a prototype SOFC power plant system with a capacity of about 1kW was fabricated using the anode made by the coated composite particles and has been in services at an operating temperature of 700°C [5]. Unique microstructure created by particle bonding technique.…”

Section: Structural Control Of Sofc Electrodesmentioning

confidence: 99%

See 1 more Smart Citation

Smart powder processing for energy and environment

Naito¹,

Abe²,

Kondô³

2011

WIT Transactions on Ecology and the Environment

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Smart powder processing stands for novel powder processing techniques that create advanced materials with minimal energy consumption and environmental impacts. This process is also important from the viewpoint of sustainability. Particle bonding technology is a typical smart powder processing technique to make advanced composites. In this paper, its application examples for clean energy, energy-saving and novel recycling will be explained. For clean energy issues, the role of microstructure control of the electrodes for higher performance of Solid Oxide Fuel Cell (SOFC) by using particle bonding will be explained. From the viewpoint of energy-saving, a new method to produce fiber reinforced fumed silica compacts by making use of particle bonding will be introduced. It will be explained that the compacts have very low thermal conductivity with high porosity at high temperature. Furthermore, by carefully controlling the bonding between different kinds of materials, effective separation of elemental components can be achieved. It leads to the development of a novel technique for recycling advanced composite materials and turns them to high-functional applications. In this paper, its application for recycling of glass fiber reinforced plastics (FRP) will be explained.

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Smart Powder Processing for Advanced Materials

Cited by 26 publications

References 45 publications

Morphology and Nanostructure of Granular Materials Built from Nanoparticles

Morphology and Nanostructure of Granular Materials Built from Nanoparticles

Development of Advanced Ceramics by Powder Composite Process

Smart powder processing for energy and environment

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