METHOD OF COATING AN ARTICLE, PASTE AND PLUG FOR PREVENTING HOLE BLOCKAGE DURING COATING

A method includes masking at least one hole (209) of an article (200) with a paste, wherein the hole (209) opens onto a surface (220) of the article (200), applying a coating (260) to the surface (220) of the article (200), and removing the paste including contacting the paste with a water containin...

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Bibliographische Detailangaben
Hauptverfasser:	CAO, Lei, PAN, Zhida, ZHAO, Jianzhi, EMINOGLU, Cem Murat, PENG, Wenqing, HARDWICKE, Canan Uslu, ZHANG, Liming
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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 DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINE PLANTS IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION WEAPONS
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Beschreibung
Zusammenfassung:	A method includes masking at least one hole (209) of an article (200) with a paste, wherein the hole (209) opens onto a surface (220) of the article (200), applying a coating (260) to the surface (220) of the article (200), and removing the paste including contacting the paste with a water containing liquid/environment to dissolve or re-disperse the paste, leaving at least one open hole (209) in the surface of the coated article (200). The paste includes about 20-80wt% of a filler material, about 0.5-20wt% of a hydrogen phosphate compound, about 0.5-15wt% of a polyhydroxy compound and about 5-25wt% of water. The filler material has an average particle size in a range of about 0.1-100 microns, and includes a first material which includes alkali metal doped alumina, zirconium oxide, titanium oxide or a combination thereof and a second material which includes a silicate. A weight ratio between the first and second materials is in a range of about 1-10. A dry plug obtainable by precuring and molding the paste and suitable to be inserted into the holes is also claimed.