Appeal 2007-1177
Application 10/733,740
second constituent comprising particles of a ceramic material having a
melting temperature sufficiently low so that the second constituent particles
at least partially melt when applied with a low velocity oxygen fuel process;
and
using the low velocity oxygen fuel process to apply the composite
powder and apply the porous thermal barrier coating to a surface.
5. A method of applying a zirconia-based thermal barrier coating,
the method comprising:
selecting a composite powder comprising a first constituent
comprising zirconia particles and a second constituent comprising particles
of a ceramic material having a melting temperature sufficiently low so that
the second constituent particles at least partially melt when applied with a
low velocity oxygen fuel process; and
using the low velocity oxygen fuel process to apply the composite
powder to a surface;
further comprising applying the composite powder to the surface of a
component without removing the component from a machine of which it
forms a part.
The Examiner relies upon the following references as evidence of
obviousness:
Longo (Longo ‘343) US 3,607,343 Sep. 21, 1971
Longo (Longo ‘184) US 4,450,184 May 22, 1984
Spitsberg US 2003/0027012 A1 Feb. 6, 2003
Sakakibara (JP ‘615) JP 2002-0275615 Sep. 25, 2002
Nagaraj US 2005/0191516 A1 Sep. 1, 2005
Appellants’ claimed invention is directed to a method of applying a
zirconia-based porous thermal barrier coating using a low velocity oxygen
2
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: September 9, 2013