Albert F Feuerstein, 74Zionsville, IN

7837843, Nov 23, 2010

Jun 5, 2006

11/446380

David Sharp - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Scott Cain - Sheridan IN, US

Praxair S.T. Technology, Inc. - Danbury CT

C23C 14/34
C23C 16/00

20429815, 20429841, 118728, 118729, 118730, 118500, 118505

This invention relates to a fixture for use in a physical vapor deposition coating operation which comprises a support structure comprising a circular base member , a circular top member opposite the circular base member , and a plurality of structural members joining said top member to said base member ; a plurality of panel members aligned in a vertical direction around the outer periphery of said support structure forming a cylinder-like structure; said panel members including a plurality of apertures for holding workpieces and to which a coating is to be applied; and said apertures positioned on said panel members so that said workpieces and are aligned in a staggered vertical direction. This invention also relates to a method for simultaneously coating a plurality of workpieces and , such as gas turbine compressor blades and vanes, with erosion resistant coatings using the fixture of this invention.

7901799, Mar 8, 2011

Sep 13, 2007

11/900683

Albert Feuerstein - Carmel IN, US
Thomas Albert - Indianapolis IN, US

Praxair S.T. Technology, Inc. - North Haven CT

B32B 9/00

428698, 416241 B, 416241 R, 428334, 428699, 428704

This invention relates to erosion resistant coatings comprising at least 2 sublayer systems in which each sublayer system is separated from another by an interlayer, wherein (i) each sublayer system is the same or different and comprises at least 4 layers, (ii) said layers comprise alternating layers of a nitride-containing compound of stoichiometric composition and a nitride-containing compound of nonstoichiometric composition, (iii) each sublayer system has a thickness of greater than about 0. 4 microns, and (iv) each interlayer is the same or different and comprises a metal-containing compound. This invention also relates to a method for producing the coatings and to articles, e. g. , gas turbine compressor rotor blade and stator vanes, coated with the coatings.

8021762, Sep 20, 2011

Apr 27, 2007

11/796261

Thomas Alan Taylor - Indianapolis IN, US
Danny Lee Appleby - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Ann Bolcavage - Indianapolis IN, US
Neil Hitchman - Carmel IN, US

Praxair Technology, Inc. - Danbury CT

B32B 15/04
B32B 15/20
B32B 18/00
F01D 5/14

428633, 428678, 428680, 428685, 428332, 416241 R, 6537413

This invention relates to articles coated with a thermally sprayed coating of a high purity yttria or ytterbia stabilized zirconia powder, said high purity yttria or ytterbia stabilized zirconia powder comprising from about 0 to about 0. 15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). The articles include, for example, blades, vanes and seal surfaces of gas turbine engines coated with a thermal barrier coating.

8097129, Jan 17, 2012

Jan 25, 2011

13/013090

Albert Feuerstein - Carmel IN, US
Thomas Albert - Indianapolis IN, US

Praxair S.T. Technology, Inc. - North Haven CT

C23C 16/00

20419216, 20419215

This invention relates to erosion resistant coatings comprising at least 2 sublayer systems in which each sublayer system is separated from another by an interlayer, wherein (i) each sublayer system is the same or different and comprises at least 4 layers, (ii) said layers comprise alternating layers of a nitride-containing compound of stoichiometric composition and a nitride-containing compound of nonstoichiometric composition, (iii) each sublayer system has a thickness of greater than about 0. 4 microns, and (iv) each interlayer is the same or different and comprises a metal-containing compound. This invention also relates to a method for producing the coatings and to articles, e. g. , gas turbine compressor rotor blade and stator vanes, coated with the coatings.

8197950, Jun 12, 2012

Sep 12, 2011

13/229981

Thomas Alan Taylor - Indianapolis IN, US
Danny Lee Appleby - Indianapolis IN, US
Ann Bolcavage - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Neil Hitchman - Carmel IN, US

Praxair S.T. Technology, Inc. - North Haven CT

B32B 15/04
B32B 15/20
B32B 18/00
F01D 5/14
C23C 4/10
C23C 4/12
C23C 4/18
B05D 3/02

428633, 428678, 428680, 428685, 428332, 427453, 427454, 416241 R, 6537413

This invention relates to dense, vertically cracked thermal barrier coatings made from high purity yttria or ytterbia stabilized zirconia powders. The high purity yttria or ytterbia stabilized zirconia powder consisting essentially of less than about 0. 01 weight percent silicon dioxide (silica), less than about 0. 002 weight percent aluminum oxide (alumina), less than about 0. 005 weight percent calcium oxide, less than about 0. 005 weight percent ferric oxide, less than about 0 to about 0. 002 weight percent magnesium oxide, less than about 0 to about 0. 005 weight percent titanium dioxide, from about 1. 5 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria), less than 0. 1 weight percent other impurity oxides, and the balance zirconium oxide (zirconia) and the balance zirconium oxide (zirconia). The thermal barrier coatings are intended to be used in cyclic thermal environments such as for gas turbine blades, vanes and seal surfaces exposed in the hot section of gas turbine engines.

8308916, Nov 13, 2012

Jul 9, 2010

12/833226

David Sharp - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Scott Cain - Sheridan IN, US

Praxair S. T. Technology, Inc. - North Haven CT

C23C 14/34
C23C 16/00

20419216, 20419212, 20419215, 4272481, 427250, 427251, 4272555

This invention relates to a fixture for use in a physical vapor deposition coating operation which comprises a support structure comprising a circular base member , a circular top member opposite the circular base member , and a plurality of structural members joining said top member to said base member ; a plurality of panel members aligned in a vertical direction around the outer periphery of said support structure forming a cylinder structure; said panel members including a plurality of apertures for holding workpieces and to which a coating is to be applied; and said apertures positioned on said panel members so that said workpieces and are aligned in a staggered vertical direction. This invention also relates to a method for simultaneously coating a plurality of workpieces and , such as gas turbine compressor blades and vanes, with erosion resistant coatings using the fixture of this invention.

8394484, Mar 12, 2013

Apr 27, 2007

11/796270

Thomas Alan Taylor - Indianapolis IN, US
Danny Lee Appleby - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Ann Bolcavage - Indianapolis IN, US
Neil Hitchman - Carmel IN, US

Praxair Technology, Inc. - Danbury CT

C23C 4/10
B32B 3/00
C04B 35/48
C04B 35/505

428134, 428131, 428136, 4281951, 428210, 428220, 428325, 428332, 428338, 428697, 428702, 501102, 501103, 501104, 501105, 501152

This invention relates to thermally sprayed coatings of a high purity yttria or ytterbia stabilized zirconia powder, said high purity yttria or ytterbia stabilized zirconia powder comprising from about 0 to about 0. 15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia). Thermal barrier coatings for protecting a component such as blades, vanes and seal surfaces of gas turbine engines, made from the high purity yttria or ytterbia stabilized zirconia powders, have a density greater than 88% of the theoretical density with a plurality of vertical macrocracks homogeneously dispersed throughout the coating to improve its thermal fatigue resistance.

2007027, Nov 29, 2007

Apr 27, 2007

11/796269

Thomas Alan Taylor - Indianpolis IN, US
Danny Lee Appleby - Indianapolis IN, US
Albert Feuerstein - Carmel IN, US
Ann Bolcavage - Indianapolis IN, US
Neil Hitchman - Carmel IN, US

F03B 3/12

416241 R

This invention relates to blades for a gas turbine engine, said blades having an inner end adapted for mounting on a hub and a blade tip located opposite the inner end, and wherein at least a portion of the blade tip is coated with a thermally sprayed coating of a high purity yttria or ytterbia stabilized zirconia powder, said thermally sprayed coating having a density greater than 88% of the theoretical density with a plurality of vertical macrocracks substantially homogeneously dispersed throughout the coating in which a cross-sectional area of the coating normal to the blade tip exposes a plurality of vertical macrocracks extending at least half the coating thickness in length up to the full thickness of the coating and having from about 5 to about 200 vertical macrocracks per linear inch measured in a line parallel to the surface of the blade tip and in a plane perpendicular to the surface of the blade tip, and said high purity yttria or ytterbia stabilized zirconia powder comprising from about 0 to about 0.15 weight percent impurity oxides, from about 0 to about 2 weight percent hafnium oxide (hafnia), from about 6 to about 25 weight percent yttrium oxide (yttria) or from about 10 to about 36 weight percent ytterbium oxide (ytterbia), and the balance zirconium oxide (zirconia).