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 | |
| Publication status | Published - 2010 |
| Externally published | Yes |
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Keywords
- Alumina
- Colloids
- Dispersion/agglomeration
- Slip casting
- Viscosity
ASJC Scopus subject areas
- Chemical Engineering(all)
Cite this
Instrument for ceramic particle dispersion. / Isobe, Toshihiro; Ooyama, Asami; Kameshima, Yoshikazu; Nakajima, Akira; Okada, Kiyoshi.
In: Powder Technology, Vol. 200, No. 1-2, 2010, p. 25-29.Research output: Contribution to journal › Article
}
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
Y1 - 2010
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
UR - http://www.scopus.com/inward/record.url?scp=77950070805&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77950070805&partnerID=8YFLogxK
U2 - 10.1016/j.powtec.2010.02.002
DO - 10.1016/j.powtec.2010.02.002
M3 - Article
AN - SCOPUS:77950070805
VL - 200
SP - 25
EP - 29
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
IS - 1-2
ER -