CVD coating scheme including alumina and/or titanium-containing materials and method of making the same

• Main Authors: MCNERNY, CHARLES, G, GATES, ALFRED, S., JR, LEICHT, PETER, R, MEHROTRA, PANKAJ, K
• Format: Patent
• Language: English; French; German
• Published: 25.12.2013
• Subjects: BORING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING; TURNING

A coated body (20) that includes a substrate (22) and a coating scheme (36) on the substrate. The coating scheme includes a CVD titanium carbonitride coating layer (41) containing titanium carbonitride grains that are of a pre-selected grain size. The coating scheme further includes a first titanium/aluminum-containing coating layer (48, 52, 56) containing first titanium/aluminum-containing grains applied so as to be farther away from the substrate than the titanium carbonitride coating layer. The first titanium/aluminum-containing grains are of a pre-selected grain size. The coating scheme also includes a CVD alumina coating layer (50, 54, 58) containing alumina grains applied so as to be farther away from the substrate than the first titanium/aluminum-containing coating layer. The alumina grains are of a pre-selected grain size.