In:
Journal of the American Ceramic Society, Wiley, Vol. 83, No. 4 ( 2000-04), p. 750-754
Abstract:
A method is introduced to prepare almost‐spherical submicrometer‐sized α‐alumina via surface modification of γ‐alumina with an alumina sol. Milled γ‐alumina, in the presence of 3 wt% of α‐alumina with a median particle size ( d 50 ) of 0.32 μm (AKP‐30), produced irregularly shaped α‐alumina with d 50 ∼0.3 μm after heat treatment at 1100°C for 1 h. γ‐alumina that had been surface‐modified by milling in the presence of 3 wt% of the alumina sol resulted in almost‐monosized, spherical α‐alumina ∼0.3 μm in size after heat treatment at 1100°C for 1 h. Furthermore, almost‐spherical α‐alumina 0.1—0.2 μm in size was obtained by milling γ‐alumina with 3 wt% of AKP‐30 alumina in the presence of 3 wt% of the alumina sol, followed by heat treatment at 1100°C for 1 h. The alumina sol that has been introduced in this work seems to act as a dispersant, in addition to helping to form a spherical shape.
Type of Medium:
Online Resource
ISSN:
0002-7820
,
1551-2916
DOI:
10.1111/jace.2000.83.issue-4
DOI:
10.1111/j.1151-2916.2000.tb01269.x
Language:
English
Publisher:
Wiley
Publication Date:
2000
detail.hit.zdb_id:
2008170-4
detail.hit.zdb_id:
219232-9
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