NANOSCALE CORUNDUM POWDERS, SINTERED COMPACTS PRODUCED FROM THESE POWDERS AND METHOD FOR PRODUCING THE SAME
摘要
Nanoscale corundum powders are obtained by first producing an Al2O3 precursor by adding seed crystals to an aqueous solution of an aluminium compound and adding a base and then converting the Al2O3 precursor into corundum by calcination at a high temperature. Before the calcination, the salts that are present in addition to the Al2O3 precursor are separated off. The resulting product is calcinated at temperatures of 700 to 975 DEG C and any fines that may be present are removed. The resulting corundum powders can be sintered at temperatures ≤ 1200 DEG C to produce compacts or components of multiple layer systems.
申请公布号
WO0208124(A3)
申请公布日期
2002.09.19
申请号
WO2001EP08422
申请日期
2001.07.20
申请人
INSTITUT FUER NEUE MATERIALIEN GEM. GMBH;DRUMM, ROBERT;GOEBBERT, CHRISTIAN;GOSSMANN, KAI;NONNINGER, RALPH;SCHMIDT, HELMUT
发明人
DRUMM, ROBERT;GOEBBERT, CHRISTIAN;GOSSMANN, KAI;NONNINGER, RALPH;SCHMIDT, HELMUT