Method for reducing metal oxide powder and attaching it to a heat transfer surface and the heat transfer surface

The purpose of the method developed is to form on top of a heat transfer surface a porous surface layer, which is to be fixed to the surface below it at a temperature and time applicable for industrial production. The heat transfer surface is copper or copper alloy. The powder forming a porous surfa...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	RISSANEN PETRI,LAAKSONEN OLLI
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING 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 CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OFGENERAL APPLICATION DIFFUSION TREATMENT OF METALLIC MATERIAL HEAT EXCHANGE IN GENERAL HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The purpose of the method developed is to form on top of a heat transfer surface a porous surface layer, which is to be fixed to the surface below it at a temperature and time applicable for industrial production. The heat transfer surface is copper or copper alloy. The powder forming a porous surface is fine-grained copper oxide powder, which is reduced to metallic copper on the heat transfer surface during heat treatment. The invention also relates to the heat transfer surface of copper or copper alloy, on which a porous layer has been formed from metallic copper, which is manufactured by reducing copper oxide powder and is attached using brazing solder.