Abstract:
A deposition apparatus (20) comprising: a chamber (22); a process gas source (62) coupled to the chamber; a vacuum pump (52) coupled to the chamber; at least two electron guns (26); one or more power supplies (30) coupled to the electron guns; a plurality of crucibles (32,33,34) positioned or positionable in an operative position within a field of view of at least one said electron gun; and a part holder (170) having at least one operative position for holding parts spaced above the crucibles by a standoff height H. The standoff height H is adjustable in a range including at least 22 inches.
Abstract:
A coating system for coating a part (10), such as a turbine blade or vane, has a mask (14) positioned adjacent to a first portion (16) of the part (10) to be coated and a mechanism (30) for moving the mask (14) relative to the part (10). The mechanism (30) may be a gear mechanism or a magnetic mechanism.
Abstract:
An apparatus for depositing a coating on a part comprises: a chamber; a source of the coating material, positioned to communicate the coating material to the part in the chamber; a plurality of thermal hoods; and means for moving a hood of the plurality of thermal hoods from an operative position and replacing the hood with another hood of the plurality of hoods.
Abstract:
The thermal barrier coating system comprises a matrix of a first chemistry with multiple embedded second phases of a second chemistry. The matrix comprises a stabilized zirconia. The second regions comprise at least 40 mole percent of oxides having the formula Ln2O3, where Ln is selected from the lanthanides La through Lu, Y, Sc, In, Ca, and Mg with the balance zirconia (ZrO2), hafnia (HfO2), titania (TiO2), or mixtures thereof. The second phases have a characteristic thickness (T6) of less than 2.0 micrometers (μm). The spacing between second phases has a characteristic thickness (T5) of less than 8.0 micrometers (μm).
Abstract:
A system for depositing coating on a workpiece includes a deposition chamber within which is formed a vortex to at least partially surround a workpiece therein.
Abstract:
A method for applying a hybrid thermal barrier coating, comprising masking at least a portion of a first surface (16) of a component (10) with a first maskant (24); applying a first coating material to at least a portion of a second surface (14) of said component; removing said first maskant (24); optionally masking at least a portion of said second surface (14) of said component with a second maskant (32); applying a second coating material to at least a portion of said first surface (16) of said component; and removing said second maskant (32).
Abstract:
A method for applying a hybrid thermal barrier coating, comprising masking at least a portion of a first surface (16) of a component (10) with a first maskant (24); applying a first coating material to at least a portion of a second surface (14) of said component; removing said first maskant (24); optionally masking at least a portion of said second surface (14) of said component with a second maskant (32); applying a second coating material to at least a portion of said first surface (16) of said component; and removing said second maskant (32).
Abstract:
An apparatus for use in a coating process includes a chamber, a crucible configured to hold a coating material in the chamber, an energy source operable to heat the interior of the chamber, a coating envelope situated with respect to the crucible, and at least one gas manifold located near the coating envelope. The at least one gas manifold is configured to provide a gas screen between the coating envelope and the crucible.
Abstract:
A thermal barrier coating for a turbine engine component contains neodymia, optionally alumina, and zirconia. The thermal barrier coating has resistance to CMAS attack and a low thermal conductivity.
Abstract:
An apparatus for use in a physical vapor deposition coating process includes a chamber, a crucible configured to hold a ceramic coating material in the chamber, an energy source operable to heat the interior of the chamber, a fixture for holding at least one substrate in the chamber, an actuator operable to rotate the fixture, and a controller configured to establish a plume of the ceramic coating material in the chamber to deposit the ceramic coating material from the plume onto the at least one substrate and form a ceramic coating thereon, and during the deposition, rotate the at least one substrate at a rotational speed selected with respect to deposition rate of the ceramic coating material onto the at least one substrate.