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Fabrication of Functionally Graded SiO 2 ‐ Mo Material by Centrifugation and Floc‐Casting of Highly Concentrated Slurry
Author(s) -
Honma Takuya,
Sasaki Ikue,
Tamura Nobuhiro,
Tatami Junichi,
Fujichika Shinichiro,
Komeya Katsutoshi,
Meguro Takeshi
Publication year - 2012
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2011.02746.x
Subject(s) - slurry , materials science , fabrication , centrifugation , casting , composite material , flocculation , centrifugal casting (silversmithing) , rheology , centrifugal force , chemical engineering , chemistry , chromatography , rotational speed , mold , medicine , alternative medicine , physics , pathology , engineering , quantum mechanics
To fabricate functionally graded materials, a highly concentrated slurry of SiO 2 ‐ Mo system was prepared and centrifugal force was applied in an attempt to achieve a graded composition. Subsequently, we formed a homogeneous green body with compositional gradation by floc‐casting at 80°C, which was then fired at 1750°C for 10 min in Ar . The sintered body had compositional ratios of SiO 2 and Mo as well as electrical conductivities that changed gradually along the direction of centrifugal force. The results demonstrate that centrifugation and control of slurry characteristics such as flocculation are effective in fabricating functionally graded SiO 2 ‐ Mo materials.