Method for local application of diffusion aluminide coating

A method includes a component preparation step 10 of exposing local areas (damaged areas of an existing coating) of a base material of a metal component 1 to be coated, and roughening a surface of the base material to a desired surface roughness, a slurry preparation step 12 of preparing a coating s...

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Bibliographische Detailangaben
Hauptverfasser:	TAKAHASHI HIDEO, SASAKI AKIKO, MUNEDA SHIGEKAZU, OHI NARIHITO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING 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 COMBINED OPERATIONS COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OTHER WORKING OF METAL PERFORMING OPERATIONS STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS
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Beschreibung
Zusammenfassung:	A method includes a component preparation step 10 of exposing local areas (damaged areas of an existing coating) of a base material of a metal component 1 to be coated, and roughening a surface of the base material to a desired surface roughness, a slurry preparation step 12 of preparing a coating slurry that contains a halide activator, a water soluble organic binder, and powder of an aluminum-containing intermetallic compound 3, an application and drying step 14 of applying the coating slurry to the damaged areas of the metal component, and then drying the areas, a packing step 16 of packing the metal component in a heat-resistant container filled with alumina powder, a diffusion treatment step 18 of retaining the heat-resistant container at high temperature in an inert atmosphere or a reducing atmosphere to diffuse aluminum onto the surface of the metal component, and a cleaning step 20 of taking out the metal component from the heat resistant container, and removing a slag from the surface of the metal co