CoresPatent
A water-soluble alumina core for single-crystal blades
A Jiangsu University patent: fused alumina with quartz and MgO on a sodium phosphate and sodium aluminate binder, claimed to dissolve in caustic or hot water in 2–4 hours.
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Index
CoresPatent
A Jiangsu University patent: fused alumina with quartz and MgO on a sodium phosphate and sodium aluminate binder, claimed to dissolve in caustic or hot water in 2–4 hours.