According to an aspect of the invention, there is provided a composite structural body including a base material; and a film-like structural body formed on a surface of the base material by causing an aerosol to impinge on the base material, the aerosol including fine particles dispersed in a gas, a distance between an end part of the film-like structural body and an outermost part closest to the end part of a portion of the film-like structural body having a film thickness equal to an average film thickness of the film-like structural body as viewed perpendicular to the surface being 10 times or more of the average film thickness.

According to an aspect of the invention, there is provided a composite structural body including a base material; and a film-like structural body formed on a surface of the base material by causing an aerosol to impinge on the base material, the aerosol including fine particles dispersed in a gas, a distance between an end part of the film-like structural body and an outermost part closest to the end part of a portion of the film-like structural body having a film thickness equal to an average film thickness of the film-like structural body as viewed perpendicular to the surface being 10 times or more of the average film thickness.

A process of remanufacturing a component such as an attachment flange used in turbochargers is provided and includes using a steam oxidation process to form an adhesion layer on top of a sealing surface of the component. The adhesion layer is an oxidation layer that a thermal metal spray coating can be applied on top of in order to prevent spalling that can occur at high heat. Once the process is completed, the component can be inspected to ensure that it meets or exceeds the manufacturer's original specifications.

To provide a repairing method, by which a coated article having high adhesion between a PVDF coating film and a repair coating film and favorable processability of the repair coating film can be obtained, and a repaired coated article.

A method for repairing a first coating film, which comprises applying a second coating material (repairing coating material) to a position to be repaired of a first coating film (PVDF coating film) formed by applying a first coating material to the surface of a substrate, to form a second coating film (repair coating film) thereby to repair the first coating film,

wherein the first coating material is a powder coating material containing PVDF (A) and a resin (B), wherein the second coating material is a coating material containing a fluororesin (L) and a titanium oxide pigment (M), and wherein the content of the titanium oxide pigment (M) is from 15 to 190 parts by mass per 100 parts by mass of the fluororesin (L).

To provide a repairing method, by which a coated article having high adhesion between a PVDF coating film and a repair coating film and favorable processability of the repair coating film can be obtained, and a repaired coated article.

A method for repairing a first coating film, which comprises applying a second coating material (repairing coating material) to a position to be repaired of a first coating film (PVDF coating film) formed by applying a first coating material to the surface of a substrate, to form a second coating film (repair coating film) thereby to repair the first coating film,

wherein the first coating material is a powder coating material containing PVDF (A) and a resin (B), wherein the second coating material is a coating material containing a fluororesin (L) and a titanium oxide pigment (M), and wherein the content of the titanium oxide pigment (M) is from 15 to 190 parts by mass per 100 parts by mass of the fluororesin (L).

A thermal barrier coating for an internal combustion engine includes an insulating thermal spray coating, where a chosen material of the insulating thermal spray coating has a thermal conductivity lower than 2 W/mK in fully dense form and the chosen material includes a coefficient of thermal expansion within 5 ppm/K of a coefficient of thermal expansion of a material of a component of the internal combustion engine upon which the coating is placed.

A heat shielding coating (11) includes a bond coat layer (12) as a metal coupling layer laminated on a base material (10), and a top coat layer (13) which is laminated on the bond coat layer (12) and includes zirconia-based ceramic, in which the top coat layer (13) has a porosity of 9% or less.

A heat shielding coating (11) includes a bond coat layer (12) as a metal coupling layer laminated on a base material (10), and a top coat layer (13) which is laminated on the bond coat layer (12) and includes zirconia-based ceramic, in which the top coat layer (13) has a porosity of 9% or less.

Disclosed is a thermal barrier coating system for components of a turbomachine, especially for high temperature-stressed or hot gas-stressed components of a turbomachine, comprising a ceramic coating of fully or partially stabilized zirconium oxide, and an oxide cover coating which comprises aluminum and at least one element from the group lanthanum, magnesium, silicon, calcium and sodium. The aluminum oxide exists at least partially as free α-Al.sub.2O.sub.3. Also disclosed is a method for producing a corresponding thermal barrier coating system.

Disclosed is a thermal barrier coating system for components of a turbomachine, especially for high temperature-stressed or hot gas-stressed components of a turbomachine, comprising a ceramic coating of fully or partially stabilized zirconium oxide, and an oxide cover coating which comprises aluminum and at least one element from the group lanthanum, magnesium, silicon, calcium and sodium. The aluminum oxide exists at least partially as free α-Al.sub.2O.sub.3. Also disclosed is a method for producing a corresponding thermal barrier coating system.