Stock material or miscellaneous articles – All metal or with adjacent metals – Composite; i.e. – plural – adjacent – spatially distinct metal...
Reexamination Certificate
2007-03-06
2007-03-06
Marcantoni, Paul (Department: 1755)
Stock material or miscellaneous articles
All metal or with adjacent metals
Composite; i.e., plural, adjacent, spatially distinct metal...
C428S633000, C428S701000, C428S702000, C428S699000, C416S24100B
Reexamination Certificate
active
11282859
ABSTRACT:
A thermal barrier coating composition is provided. The composition has a base oxide, a primary stabilizer, and at least two additional cationic oxide dopants. Preferably, a pair of group A and group B defect cluster-promoting oxides is used in conjunction with the base and primary stabilizer oxides. The new thermal barrier coating is found to have significantly lower thermal conductivity and better sintering resistance. In preferred embodiments, the base oxide is selected from zirconia and hafnia. The group A and group B cluster-promoting oxide dopants preferably are selected such that the group A dopant has a smaller cationic radius than the primary stabilizer oxide, and so that the primary stabilizer oxide has a small cationic radius than that of the group B dopant.
REFERENCES:
patent: 3634113 (1972-01-01), Fehrenbacher
patent: 3645894 (1972-02-01), Krystyniak
patent: 3957500 (1976-05-01), Pitts
patent: 4055705 (1977-10-01), Stecura et al.
patent: 4205051 (1980-05-01), Takahashi et al.
patent: 4399199 (1983-08-01), McGill et al.
patent: 4535033 (1985-08-01), Stecura
patent: 4588655 (1986-05-01), Kushner
patent: 4996117 (1991-02-01), Chu et al.
patent: 5238886 (1993-08-01), Luszcz et al.
patent: 5652044 (1997-07-01), Rickerby
patent: 5843585 (1998-12-01), Alperine et al.
patent: 5975852 (1999-11-01), Nagaraj et al.
patent: 6020075 (2000-02-01), Gupta et al.
patent: 6025078 (2000-02-01), Rickerby et al.
patent: 6044830 (2000-04-01), Jones
patent: 6168874 (2001-01-01), Gupta et al.
patent: 6210812 (2001-04-01), Hasz et al.
patent: 6440575 (2002-08-01), Heimberg et al.
patent: 6620525 (2003-09-01), Rigney et al.
patent: 6686060 (2004-02-01), Bruce et al.
patent: 6812176 (2004-11-01), Zhu et al.
patent: 6890668 (2005-05-01), Bruce et al.
patent: 6916551 (2005-07-01), Torigoe et al.
patent: 6960395 (2005-11-01), Spitsberg et al.
patent: 94/08069 (1994-04-01), None
Dongming Zhu, et al., Thermophysical and Thermomechanical Properties of Thermal Barrier Coating Systems, pp. 623-633, Ceramic Engineering and Science Proceedings, vol. 21, 2000.
Dongming Zhu, et al., “Thermal Conductivity and Elastic Modulus Evolution of Thermal Barrier Coatings Under High Heat Flux Conditions”, pp. 175-180, Journal of Thermal Spray Technology, vol. 9(2), Jun. 2000.
Dongming Zhu et al., “Furnace Cyclic Behavior of Plasma-Sprayed Zirconia-Yttria and Multi-Component Rare Earth Oxide Doped Thermal Barrier Coatings”, pp. 1-13, 26thAnnual International Conference on Advanced Ceramics and Composites, Jan. 13-18, 2002, NASA/TM-2002-211690.
Dongming Zhu et al., “Thermal Conductivity and Stability of HfO2-Y2O3and La2Zr2O7Evaluated for 1650° C. Thermal/Environmental Barrier Coating Applications”, pp. 1-9, 105thAnnual Meeting and Exposition of the American Ceramic Society, Apr. 27-30, 2003, NASA/TM-2003-212544.
Dongming Zhu et al., “Defect Clustering and Nanophase Structure Characterization of Multicomponent Rare Earth-Oxide-Doped Zirconia-Yttria Thermal Barrier Coatings”, pp. 1-11, NASA/TM 2004-212480, Jan. 2004.
Dongming Zhu et al., “Thermal Conductivity and Sintering Behavior of Advanced Thermal Barrier Coatings”, pp. 1-10, NASA/TM-2002-211481, May 2002.
Miller Robert A.
Zhu Dongming
Marcantoni Paul
Ohio Aerospace Institute
Pearne & Gordon LLP
The United States of America as represented by the Administrator
LandOfFree
Low conductivity and sintering-resistant thermal barrier... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low conductivity and sintering-resistant thermal barrier..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low conductivity and sintering-resistant thermal barrier... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3800009