Abstract: A coated part is exposed to a gas flow. The gas flow has a characteristic gas flow direction distribution over a surface of the coated part. The coated part has a substrate having a substrate surface and a coating over the substrate surface. The coating comprises at least one coating layer. A first such layer is columnar and has a column boundary direction distribution. The column boundary direction distribution is selected for partial local alignment with the gas flow direction distribution.

Abstract: A ceramic material is applied to a part. The part is placed in a deposition chamber and a first electric potential is applied to the part. Components are evaporated for forming the material. The evaporated components are ionized. The first electric potential is modulated so as to draw the ionized component to the part. The modulation comprises maintaining at least an ion current density in a range of 2-1000 mA/cm2.

Abstract: A material is applied to a part. The part is placed in a deposition chamber and a first electric potential is applied to the part. Components are evaporated for forming the material. The evaporated components are ionized. The first electric potential is modulated so as to draw the ionized component to the part. The modulation comprises a plurality of first steps for PA-PVD. Each of the first steps comprises a series of pulses of negative potential. The modulation further comprises a plurality of second steps for PVD alternating with the first steps.

Abstract: A ceramic material is applied to a part. The part is placed in a deposition chamber and a first electric potential is applied to the part. Components are evaporated for forming the material. The evaporated components are ionized. The first electric potential is modulated so as to draw the ionized component to the part. The modulation comprises maintaining at least an ion current density in a range of 2-1000 mA/cm2.

Abstract: An apparatus for applying a coating to a substrate comprises a deposition chamber. A crucible may hold a melt pool of coating material. The melt pool is rotated during deposition.

Abstract: A material is applied to a part. The part is placed in a deposition chamber and a first electric potential is applied to the part. Components are evaporated for forming the material. The evaporated components are ionized. The first electric potential is modulated so as to draw the ionized component to the part. The modulation comprises a plurality of first steps for PA-PVD. Each of the first steps comprises a series of pulses of negative potential. The modulation further comprises a plurality of second steps for PVD alternating with the first steps.

Abstract: A deposition apparatus includes a deposition chamber and a deposition material source. An electron beam source is positioned to direct a first electron beam to vaporize a portion of the deposition material. A first electrode is provided for generating a primary plasma from the deposition material source. A second electrode is provided for generating a secondary plasma and further accelerating ions from the primary plasma. A bias electric potential is applied to the workpiece to draw ions from the secondary plasma to the workpiece. A control system may be coupled to the electron beam source, the bias voltage source, and power supplies for the first and second electrodes.

Abstract: A coated part is exposed to a gas flow. The gas flow has a characteristic gas flow direction distribution over a surface of the coated part. The coated part has a substrate having a substrate surface and a coating over the substrate surface. The coating comprises at least one coating layer. A first such layer is columnar and has a column boundary direction distribution. The column boundary direction distribution is selected for partial local alignment with the gas flow direction distribution.

Abstract: A method for repairing a turbine engine component is provided. The method broadly comprises the steps of providing a turbine engine component having an airfoil portion, applying a coating to the airfoil portion, and restoring a tip portion, a chord, and surfaces of the airfoil portion to original dimensions in a single operation. A system for repairing the turbine engine component is also described.

Abstract: A method for repairing a turbine engine component is provided. The method broadly comprises the steps of providing a turbine engine component having an airfoil portion, applying a coating to the airfoil portion, and restoring a tip portion, a chord, and surfaces of the airfoil portion to original dimensions in a single operation. A system for repairing the turbine engine component is also described.

Abstract: A method of hole defect repair includes removing one or more defects at or near a desired hole shape in a substrate by removing a non-concentric portion of the substrate proximate the desired hole shape, and welding a filler material to the substrate after removing the non-concentric portion of the substrate.

Abstract: A guide (120) for an ignitor plug (105) of a gas turbine engine (10) includes an extend nonrotational bushing (155) having a base (160) slidably received within a hollow sleeve base (135), fixed to the wall of the engine's combustion chamber (65).

Abstract: Disclosed is a method for reducing embrittlement of certain materials of pressurized water reactor vessels caused by neutron flux. According to this method, "shadow shielding" is placed within the core support barrel in areas having a more benign flow environment than that of the downcomer area. This shadow shielding provides an increased neutron scattering cross section. In one example, the shadow shielding replaces segments of the core shroud plate in a manner which does not interfere with coolant flow in the vessel. The segments of the shroud plate which are replaced are those near critical regions of the vessel, typically welds. The size and shape of the shielding is determined according to plant specific requirements.

Abstract: An improved core shroud for a nuclear reactor employs cylindrical bands that surround a coolant boundary and reinforce it by means of support members that engage the coolant boundary and the bands.