Reduction of Pt and Rh evaporation losses at high temperatures through the use of a barrier layer

Component made of platinum or a Pt alloy, whose external surface, which, in use, contacts an oxidising atmosphere is covered by an open-pore ceramic or quartz layer, whose pores contain as an infiltrating component a material that melts at the operating temperature, and which are protected from evap...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	JANTSCH, UWE, VORBERG, STEFAN, LUKAS, ANNETTE, LUPTON, DAVID FRANCIS, MANHARDT, HARALD, BISSINGER, MARK, GUEBLER, NICOLE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS 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 COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE DIFFUSION TREATMENT OF METALLIC MATERIAL GLASS 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 LIME, MAGNESIA MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES METALLURGY MINERAL OR SLAG WOOL PERFORMING OPERATIONS REFRACTORIES SLAG SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING TREATMENT OF NATURAL STONE
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	Component made of platinum or a Pt alloy, whose external surface, which, in use, contacts an oxidising atmosphere is covered by an open-pore ceramic or quartz layer, whose pores contain as an infiltrating component a material that melts at the operating temperature, and which are protected from evaporation losses upon their use in an oxidising atmosphere at temperatures > 1,200 DEG C. A method for reducing the evaporation rate of platinum and Pt alloys in an oxidising atmos-phere comprises the steps of A. applying an open-pore quartz or ceramic layer, B. infiltrating into said layer a material that melts at lower temperature than the ceramic ma-terial such that the pore spaces of the open-pore ceramic layer are partly or completely filled by the infiltrating component; C. use at temperatures > 1,200 DEG C.