Dy-DOPED NANO CERIA SINTERED COMPACT AND ITS MANUFACTURING METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a highly electroconductive ceria sintered compact and its manufacturing method. PSOLUTION: By passing through a process for yielding a precipitated product of a precursor having a specified composition, a Dy-doped nano ceria spherical particle with a controlled shape, less aggregated, and good sinterability is produced. By sintering it, a dense sintered compact comprising particles with an average diameter of 100 nm is manufactured, by which its electroconductivity is drastically improved and a nano-sintered compact with high electroconductivity unobtainable by a conventional rare-earth element-doped ceria sintered compact is obtained. PCOPYRIGHT: (C)2005,JPO&NCIPI