摘要:
Methods for coating substrates arc provided. A method for coating a substrate comprises disposing a coating on a substrate, where the coating exhibits a first strain tolerance; and treating the coating to enhance the strain tolerance of the coating to a second strain tolerance. The second strain tolerance is more strain tolerant strain than the first strain tolerance. Further, the step of treating comprises at least one of mechanical treating, chemically treating, thermally treating, and combinations thereof.
摘要:
A thermal barrier coating (TBC) system (110) is provided. The system includes at least one thermal barrier coating (TBC) bond coat layer (112) formed over a substrate surface region (108). The TBC bond coat layer includes at least one TBC bond coat material. The TBC bond coat material is a nickel-chromium-aluminum-yttrium (NiCrAIY) composition that also includes silicon (Si), hafnium (Hf) and less than 10 weight percent (wt%) cobalt (Co). The TBC system further includes at least one top coat layer (120) formed over the TBC bond coat layer.
摘要:
A method for forming a protective coating on a substrate (12) comprising, applying a bond coating (14) to the substrate (12), the bond coating (14) having a first surface roughness, ionizing an inert gas which flows into the surface of the bond coating (14) so as to impart a second surface roughness to the bond coating (14) greater than the first surface roughness, wherein the inert gas is ionized and caused to flow into the surface of the bond coating (14) by a reverse polarity current supplied to an electrode (22) which removes at least one electron from the inert gas, and applying a top coating (16) to the bond coating (14). Additionally, a method for preparing a surface to receive and adhere to a coating comprising roughening the surface to create a micro-roughening network (18) on the surface. In addition, a method of improving strain tolerance and cyclic spallation life of a protective coating.
摘要:
A method for forming a protective coating on a substrate (12) comprising, applying a bond coating (14) to the substrate (12), the bond coating (14) having a first surface roughness, ionizing an inert gas which flows into the surface of the bond coating (14) so as to impart a second surface roughness to the bond coating (14) greater than the first surface roughness, wherein the inert gas is ionized and caused to flow into the surface of the bond coating (14) by a reverse polarity current supplied to an electrode (22) which removes at least one electron from the inert gas, and applying a top coating (16) to the bond coating (14). Additionally, a method for preparing a surface to receive and adhere to a coating comprising roughening the surface to create a micro-roughening network (18) on the surface. In addition, a method of improving strain tolerance and cyclic spallation life of a protective coating.
摘要:
A process for providing a protective coating to a metal surface comprises applying a nickel or tantalum plate layer to the surface and dispersing particles of a hard material such as diamond, alumina, vanadium nitride, tantalum carbide and/or tungsten carbide within the nickel or tantalum plate layer as the plating is occurring.
摘要:
Methods for coating substrates arc provided. A method for coating a substrate comprises disposing a coating on a substrate, where the coating exhibits a first strain tolerance; and treating the coating to enhance the strain tolerance of the coating to a second strain tolerance. The second strain tolerance is more strain tolerant strain than the first strain tolerance. Further, the step of treating comprises at least one of mechanical treating, chemically treating, thermally treating, and combinations thereof.
摘要:
Methods for coating metal substrates are provided. The coating comprises a strain tolerant coating using a sol-gel process, and articles made therefrom. In one embodiment, the method of coating a metal substrate comprises: disposing a sol coating on a metal substrate; inducing the sol coating to convert to a gel coating; inducing a pattern on or in the gel coating; and sintering the gel coating
摘要:
A corrosion sensor (20) includes a plurality of conductive portions (24) and at least one non-conductive portion (26) between adjacent conductive portions (24), wherein the at least one non-conductive portion (26) has a dimension less than approximately 500 microns. A method for manufacturing a corrosion sensor (20) includes applying a non-conductive material (52) to a substrate and applying a conductive material (54) to discrete locations on the non-conductive material (52). The method further includes applying a brazing material (56) around each discrete location of the conductive material (54).
摘要:
A method of sealing gaps (26) between a bucket dovetail (14) and a rotor disk dovetail slot (16) in which the bucket dovetail (14) is adapted to be received, the method comprising applying a resin material (24) to selected areas of the bucket dovetail (14); and inserting the bucket dovetail (14) into the dovetail slot (16).