METHOD FOR PREPARING CORDIERITE-ZIRCONIA COMPOSITE

The cordierite-zirconia composite having good toughness is prepared by (a) mixing ultrafine silica powder suspension solution, boehmite powder suspension solution and zirconia sol suspension solution to be composed of 70-93.5 wt% cordierite and 6.5-30.0 wt% zirconia, (b) controlling pH to be 3-6 and...

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Bibliographic Details
Main Authors CHANG, HYON - MYONG, CHONG, HAN - NAM
Format Patent
LanguageEnglish
Korean
Published 04.09.1995
Edition6
Subjects
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
CONCRETE
LIME, MAGNESIA
METALLURGY
REFRACTORIES
SLAG
TREATMENT OF NATURAL STONE
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Summary:The cordierite-zirconia composite having good toughness is prepared by (a) mixing ultrafine silica powder suspension solution, boehmite powder suspension solution and zirconia sol suspension solution to be composed of 70-93.5 wt% cordierite and 6.5-30.0 wt% zirconia, (b) controlling pH to be 3-6 and gelating the mixed solution by mixing magnesium nitrate aqueous solution, (c) filtering, drying the gelated suspension solution and calcinating the dried body at 800-1,100 deg.C, pulverizing, drying and molding it, (d) sintering the molded body at 1,250-1,320 deg.C with the heating rate of 7-15 deg.C/min for 1-2 hrs.
Bibliography:Application Number: KR19920019913