SUBSTRATE COMPRISING A PATTERN CONSISTING OF A GOLD ALLOY, A NOBLE METAL AND A BASE METAL, THE PATTERN BEING ISOLATED BY OXIDES OF NOBLE AND BASE METALS

摘要

P IN A CABLE SUBSTRATE, A CONDUCTIVE PATTERN IS FORMED OF A GOLD ALLOY, A BASE METAL AND A NOBLE METAL AND IS ADJACENT TO AN INSULATING LAYER OF A MIXTURE OF METAL OXIDES. BASE AND NOBLE. THE ALLOY PREFERABLY INCLUDES BASE AND NOBLE METALS IN A TOTAL PROPORTION OF 0.2 TO 2 BY WEIGHT. PREFERABLY, THE BASE METAL IS TITANIUM, ALUMINUM OR COPPER. THE NOBLE METAL IS PALLADIUM, RUTHENIUM, RHODIUM OR NICKEL. THE CABLE SUBSTRATE IS MANUFACTURED BY FORMING A FIRST LAYER OF BASE METAL, A SECOND LAYER OF NOBLE METAL AND A GOLD LAYER SELECTIVELY FORMED SUCCESSIVELY ON THE SUBSTRATE AND HOT TREATING AT LEAST THE FIRST LAYER, THE SECOND LAYER AND THE LAYER. GOLD TO CONVERT THE GOLD LAYER AND THE PARTS OF THE FIRST AND SECOND LAYERS ON WHICH THE GOLD LAYER IS FORMED, IN CONDUCTIVE PATTERN AND TO CONVERT OTHER PARTS OF THE FIRST AND SECOND LAYERS INTO INSULATING LAYER. THE FIRST LAYER, THE SECOND LAYER, AND THE GOLD LAYER PREFERABLY RESPECTIVE THICKNESSES FROM 0.025 TO 0.4, 0.025 TO 0.3 AND 1 TO 10 MICRONS. WHEN THE BASE AND NOBLE METALS ARE TITANIUM AND PALLADIUM RESPECTIVELY, THE HEAT TREATMENT IS MADE BY AIR FROM 850C TO 950C FOR 5 TO 10 MINUTES. /P