A bimodal particle size distribution enhances mechanical and magnetocaloric properties of low-temperature hot pressed Sn-bonded La0.8Ce0.2(Fe0.95Co0.05)11.8Si1.2 bulk composites

It is investigated whether ginseng can be milled into super fine powder below 50μm, changing the circumferential velocity of impeller of a turbo mill(100, 110 and 120m/s). The mean particle size is 113.3μm in control but is decreased abruptly into 11.9μm at 120m/s. The largest particle diameter at 97% of volume distribution is reduced into below 32μm at 120m/s from below 725μm at control. The particle size distribution between d(0.1) and d(0.9) is 334μm at control, but is decreased into less than 26μm in all conditions after milling. It shows that ginseng can be milled into super fine powder by the turbo mill, which has the narrow particle size distribution.

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Preparation of Submicron Silica Powders from Sodium Silicate Using Ultrasonic Energy

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.336-338.920 ◽

2007 ◽

Vol 336-338 ◽

pp. 920-923

Author(s):

Sang Geun Lee ◽

Yoon Sik Jang ◽

Seong Soo Park ◽

Byung Young Moon ◽

Beom Soo Kang ◽

...

Keyword(s):

Particle Size ◽

Low Temperature ◽

Particle Size Distribution ◽

Size Distribution ◽

Sodium Silicate ◽

Narrow Size Distribution ◽

Emulsion Method ◽

Conventional Process ◽

Broad Size Distribution ◽

Ultrasonic Process

Submicron silica powders were prepared by w/o emulsion method using inexpensive sodium silicate, ammonium sulfate and Triton N-57 as SiO2 source, precipitant and emulsifier, respectively. Nano-sized silica powders with narrow size distribution were prepared at a low temperature of 25°C for 1h by ultrasonic irradiation of the reactants using a commercial ultrasonic cleaner operating at a frequency of 47kHz, whereas silica powders with larger size and broad size distribution were synthesized using the same reactants at the same temperature and for the same time by the conventional process without ultrasounds. The particle size and size distribution of the silica powders obtained by the ultrasonic process were smaller and narrower than those by the conventional process, indicating that the application of ultrasound in the synthesis of silica powders by the w/o emulsion method is an efficient way to have powders with smaller and narrower particle size distribution.

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Effect of Intake Oxygen Concentration on Particle Size Distribution Measurements from Diesel Low Temperature Combustion

SAE International Journal of Engines ◽

10.4271/2011-01-1355 ◽

2011 ◽

Vol 4 (1) ◽

pp. 1888-1902 ◽

Cited By ~ 9

Author(s):

Francisco Payri ◽

Jesús Benajes ◽

Ricardo Novella ◽

Christopher Kolodziej

Keyword(s):

Particle Size ◽

Low Temperature ◽

Particle Size Distribution ◽

Size Distribution ◽

Oxygen Concentration ◽

Low Temperature Combustion ◽

Temperature Combustion

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Low temperature synthesis of nanosized NaY zeolite crystals from organic-free gel by using supported seeds

RSC Advances ◽

10.1039/c4ra03376k ◽

2014 ◽

Vol 4 (42) ◽

pp. 21951-21957 ◽

Cited By ~ 14

Author(s):

T. F. Mastropietro ◽

E. Drioli ◽

T. Poerio

Keyword(s):

Particle Size ◽

Low Temperature ◽

Particle Size Distribution ◽

Size Distribution ◽

Room Temperature ◽

Nay Zeolite ◽

Low Temperature Synthesis ◽

Temperature Synthesis ◽

Organic Structure ◽

Zeolite Crystals

Zeolite crystals having faujasite-type (FAU) topology and particle size distribution in the nanometer range have been successfully prepared by a room temperature, short duration synthesis, in the absence of organic structure directing agents (SDAs).

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