CERAMIC POWDER, CERAMIC LAYER AND LAYER SYSTEM, WITH GADOLINIUM MIXED CRYSTAL PYROCHLORE PHASE AND OXIDE

摘要

PPROBLEM TO BE SOLVED: To provide a ceramic powder, a ceramic layer and a layer system which have superior insulating characteristics and superior bonding to a substrate and therefore which have a long life. PSOLUTION: The ceramic powder comprises a pyrochlore structure denoted as GdSBv/SB(ZrSBx/SBHfSBy/SB)OSBz/SB, particularly only the pyrochlore structure denoted as GdSBv/SB(ZrSBx/SBHfSBy/SB)OSBz/SBand a secondary oxide of zirconium (Zr) and/or hafnium (Hf) particularly in an amount of 0.5-10 wt.%, and contains optionally 0.05 wt.% or less silicon oxide, 0.1 wt.% or less calcium oxide, 0.1 wt.% or less magnesium oxide, 0.1 wt.% or less iron oxide, 0.1 wt.% or less aluminum oxide and 0.08 wt.% or less titanium oxide as a sintering auxiliary agent. The ceramic powder comprises the pyrochlore structure and the secondary oxide of Hf and/or Zr and contains optionally the sintering auxiliary agent. PCOPYRIGHT: (C)2011,JPO&INPIT