METHODS FOR FORMING VERTICALLY CRACKED THERMAL BARRIER COATINGS AND ARTICLES INCLUDING VERTICALLY CRACKED THERMAL BARRIER COATINGS

• Main Authors: LIN, Dechao, BUCCI, David Vincent
• Format: Patent
• Language: English; French; German
• Published: 06.06.2018
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; COMBINED OPERATIONS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; OTHER WORKING OF METAL; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WELDING; WORKING BY LASER BEAM

A method for forming a vertically cracked thermal barrier coating (200) is disclosed including positioning an article (100) relative to a heat source (102). The article (100) includes a thermal barrier coating (202) disposed on a first surface (204) of a substrate (206), and the substrate (206) includes a second surface (208) distal across the substrate (206) from the first surface (204). Heat is applied locally to at least one discrete portion (210) of the second surface (208) of the substrate (206). At least one vertical crack (212) in the thermal barrier coating (202) is formed disposed over the at least one discrete portion (210). An article (100) is disclosed including a substrate (206) and a vertically-cracked thermal barrier coating (200) disposed on the substrate (206). The vertically cracked thermal barrier coating (200) includes at least one vertical crack (212) in the thermal barrier coating (202) and at least one of a low density of less than 85% of a theoretical density for the thermal barrier coating (202) and a selective crack distribution.