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Product Japan. M.

PATENT ASSIGNEE'S COUNTRY Japan
UPDATE 07.99
PATENT ASSIGNEE This data is not available for free
PATENT CLAIMS Ceramics mfg method having minimized porosity & sintering
shrinkage
- Forming mixt contg (1) alumina particles, Al particles Ta2O5
particles & (2) MgCO3 particles
- Molding mixt to form compacts
- Sintering compacts under O atm.
Wherein (1) grains of alumina are produced from said alumina particles; (2) Grains of MgAl2O4 including Ta are produced by an oxidation reaction of mixt., & (3) A gap located among said grains of alumina is filled with said grains of MgAl2O4 including Ta expanded by said oxidation reaction
PATENT PHOTOCOPY Available on request

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