Methods and apparatus for turbine engine component coating
AssigneeGeneral Electric Company
InventorsNripendra Das, W. Gmerek, David Koch
Life of this patent
Estimating the term…
Abstract
A method for processing a substrate article is provided. The method includes masking a first portion of the substrate article with a maskant that includes a formed graphite piece that overlays and contacts the first portion of the substrate such that a second portion of the substrate is not overlaid nor contacted by the maskant; and processing the substrate article such that a coating of material is deposited on the second portion of the substrate, and wherein the maskant facilitates preventing the coating from being deposited on the first portion of the substrate article.
Claims20
A method for processing a substrate article comprising:
- masking a first portion of the substrate article with a maskant that includes a formed graphite piece that overlays and contacts the first portion of the substrate, such that a second portion of the substrate is not overlaid nor contacted by the maskant, wherein the formed graphite piece includes a plurality of graphite segments that each include a first interlocking end and an opposite second interlocking end, and wherein masking a first portion comprises interlocking each segment interlocking end with a respective interlocking end of an adjacent segment such that the plurality of interlocking segments form an annular ring;
- and
- processing the substrate article such that a coating of material is deposited on the second portion of the substrate, and wherein the maskant facilitates preventing the coating from being deposited on the first portion of the substrate article.
(canceled)
A method for coating a gas turbine engine turbine engine nozzle with an environmental coating, said method comprising:
- masking a first portion of the turbine engine nozzle with a maskant including a formed graphite piece that overlies and contacts the first portion of the nozzle, such that a second portion of the nozzle remains exposed, wherein the formed graphite piece comprises a plurality of graphite segments that each include a first interlocking end and an opposite second interlocking end, and wherein masking a first portion of the turbine nozzle comprises interlocking each graphite segment interlocking end with a respective interlocking end of an adjacent segment such that the plurality of interlocking segments form an annular ring;
- and
- depositing a coating on the second portion of the nozzle without removing the maskant such that the maskant facilitates preventing the coating from being deposited on the first portion of the nozzle.
(canceled)
A coating mask for use in coating a substrate, said mask comprising a first interlocking segment end, an opposite second interlocking segment end and a body extending therebetween, each interlocking segment end is configured to interlock with a respective interlocking end of an adjacent segment such that a plurality of interlocking segments overlay a substrate article first portion said body comprising:
- a formed graphite mask segment configured to isolate a portion of a substrate article from a coating atmosphere;
- and
- a contour surface shaped to conform to a first portion of the substrate article.
Dependencies are inferred from the claim text.