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Fabrication of Fine Mullite Powders by Heterogeneous Nucleation and Growth Processing
Author(s) -
Tang YueFeng,
Li AiDong,
Lü Yig,
Ling ZhiDa
Publication year - 2004
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2004.00520.x
Subject(s) - nucleation , mullite , composite number , materials science , chemical engineering , suspension (topology) , fabrication , homogeneous , particle (ecology) , amorphous solid , particle size , mineralogy , aluminium silicate , particle size distribution , composite material , ceramic , chemistry , crystallography , alternative medicine , mathematics , oceanography , homotopy , thermodynamics , medicine , physics , organic chemistry , pure mathematics , geology , pathology , engineering
Heterogeneous nucleation and growth was used to prepare composite particles with homogeneous component distribution. Composite particles consisting of α‐Al 2 O 3 cores with an outer amorphous homogeneous silica layer were prepared by heterogeneous nucleation and growth processing using an ethanol suspension containing ammonia, tetraethylorthosilicate, and α‐Al 2 O 3 . Fine mullite powders of average particle size 0.53 μm were fabricated by calcinating the composite particles at 1500°C for 2 h.