Patent ID: 8062775
Filing Date: 2011-11-22
Classification: C04B,C09D,C23C,F01D,F02C,F05D,F28B,F28F,Y02E,Y02T,Y10S,Y10T

Abstract:
1. An article comprising: a coating disposed on a metal substrate, wherein the coating comprises an oxide, the oxide having up to about 25 atomic percent of its total cation content as tetravalent cations, with the oxide having a composition defined by the chemical formula (A wherein A comprises Yb or Eu, and B comprises Gd, Sm, Dy, or Tb; and wherein x is in the range from about 0.01 to about 0.99; subject to the following: (a) provided that, where A consists essentially of Yb, B consists essentially of Gd; and (b) provided that, where A consists essentially of Eu and B comprises Sm, Dy, or Tb, x is in the range from about 0.5 to about 0.99.