Instrument for ceramic particle dispersion

Toshihiro Isobe; Asami Ooyama; Yoshikazu Kameshima; Akira Nakajima; Kiyoshi Okada

doi:10.1016/j.powtec.2010.02.002

Instrument for ceramic particle dispersion

Toshihiro Isobe, Asami Ooyama, Yoshikazu Kameshima, Akira Nakajima, Kiyoshi Okada

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

Agglomerated sub-micrometer-sized alumina particles were pulverized using a novel method. A high-density polyethylene (HDPE) cup equipped with stainless steel mesh turned at a 500-2000. rpm revolution rate and a 200-800. rpm rotation rate. A suspension passes through the small mesh openings, and turbulent flow and high shear stress was generated. The sample's particle size distribution before mesh treatment exhibited a broad peak at 2-70. μm, reflecting the particles' agglomeration. This suspension's viscosity was 19.8. mPa s. After mesh treatment at 2000. rpm revolution rate for 10. min, the distribution showed two peaks at 0.2 and 2-70. μm. The alumina agglomerates shrank concomitantly with increased treatment time and dispersed completely after 30. min mesh treatment. The resultant suspension's viscosity was 9.2. mPa s, which is half that of the pre-treatment suspension.

Original language	English
Pages (from-to)	25-29
Number of pages	5
Journal	Powder Technology
Volume	200
Issue number	1-2
DOIs	https://doi.org/10.1016/j.powtec.2010.02.002
Publication status	Published - Feb 26 2010
Externally published	Yes

Keywords

Alumina
Colloids
Dispersion/agglomeration
Slip casting
Viscosity

ASJC Scopus subject areas

Chemical Engineering(all)

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10.1016/j.powtec.2010.02.002

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title = "Instrument for ceramic particle dispersion",

abstract = "Agglomerated sub-micrometer-sized alumina particles were pulverized using a novel method. A high-density polyethylene (HDPE) cup equipped with stainless steel mesh turned at a 500-2000. rpm revolution rate and a 200-800. rpm rotation rate. A suspension passes through the small mesh openings, and turbulent flow and high shear stress was generated. The sample's particle size distribution before mesh treatment exhibited a broad peak at 2-70. μm, reflecting the particles' agglomeration. This suspension's viscosity was 19.8. mPa s. After mesh treatment at 2000. rpm revolution rate for 10. min, the distribution showed two peaks at 0.2 and 2-70. μm. The alumina agglomerates shrank concomitantly with increased treatment time and dispersed completely after 30. min mesh treatment. The resultant suspension's viscosity was 9.2. mPa s, which is half that of the pre-treatment suspension.",

keywords = "Alumina, Colloids, Dispersion/agglomeration, Slip casting, Viscosity",

author = "Toshihiro Isobe and Asami Ooyama and Yoshikazu Kameshima and Akira Nakajima and Kiyoshi Okada",

year = "2010",

month = feb,

day = "26",

doi = "10.1016/j.powtec.2010.02.002",

language = "English",

volume = "200",

pages = "25--29",

journal = "Powder Technology",

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TY - JOUR

T1 - Instrument for ceramic particle dispersion

AU - Isobe, Toshihiro

AU - Ooyama, Asami

AU - Kameshima, Yoshikazu

AU - Nakajima, Akira

AU - Okada, Kiyoshi

PY - 2010/2/26

Y1 - 2010/2/26

N2 - Agglomerated sub-micrometer-sized alumina particles were pulverized using a novel method. A high-density polyethylene (HDPE) cup equipped with stainless steel mesh turned at a 500-2000. rpm revolution rate and a 200-800. rpm rotation rate. A suspension passes through the small mesh openings, and turbulent flow and high shear stress was generated. The sample's particle size distribution before mesh treatment exhibited a broad peak at 2-70. μm, reflecting the particles' agglomeration. This suspension's viscosity was 19.8. mPa s. After mesh treatment at 2000. rpm revolution rate for 10. min, the distribution showed two peaks at 0.2 and 2-70. μm. The alumina agglomerates shrank concomitantly with increased treatment time and dispersed completely after 30. min mesh treatment. The resultant suspension's viscosity was 9.2. mPa s, which is half that of the pre-treatment suspension.

AB - Agglomerated sub-micrometer-sized alumina particles were pulverized using a novel method. A high-density polyethylene (HDPE) cup equipped with stainless steel mesh turned at a 500-2000. rpm revolution rate and a 200-800. rpm rotation rate. A suspension passes through the small mesh openings, and turbulent flow and high shear stress was generated. The sample's particle size distribution before mesh treatment exhibited a broad peak at 2-70. μm, reflecting the particles' agglomeration. This suspension's viscosity was 19.8. mPa s. After mesh treatment at 2000. rpm revolution rate for 10. min, the distribution showed two peaks at 0.2 and 2-70. μm. The alumina agglomerates shrank concomitantly with increased treatment time and dispersed completely after 30. min mesh treatment. The resultant suspension's viscosity was 9.2. mPa s, which is half that of the pre-treatment suspension.

KW - Alumina

KW - Colloids

KW - Dispersion/agglomeration

KW - Slip casting

KW - Viscosity

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JF - Powder Technology

SN - 0032-5910

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