METHOD FOR DIFFUSION COATING OF IRON-CONTAINING BASE MATERIAL FOR DECORATIVE AND ORNAMENTAL OBJECTS WITH PRECIOUS METAL COMPONENTS COMPRISING SILVER, AND DECORATIVE AND ORNAMENT OBJECTS OBTAINED BY THIS PROCESS

摘要

P COATING OF A METAL MATERIAL CONTAINING IRON, FOR EXAMPLE A STAINLESS STEEL, FOR DECORATIVE AND ORNAMENTAL OBJECTS, WITH AN ALLOY OF PRECIOUS METALS, SUCH AS 18-CARAT SILVER FINISH CONTAINING SILVER. / P P THE COATING IS CARRIED OUT IN TWO STEPS. IN A FIRST STAGE, THE CONSTITUENTS OF THE ALLOY, BUT EXCLUDING THE SILVER, ARE APPLIED ONTO THE BASED MATERIAL SURFACES TO FORM A FIRST LAYER, AND THIS FIRST LAYER IS HEATED TO CAUSE ITS DIFFUSION WITH THE MATERIAL. BASIC. IN A SECOND STEP, THE WHOLE OR A SELECTED PART OF THE ALLOY COMPONENTS, COMPRISING MATRIX OR PRIMARY COMPONENTS AND SILVER, ARE APPLIED ON THE SAME SURFACES TO FORM A SECOND SUCCESSIVE LAYER, AND THIS SECOND LAYER IS HEATED FOR PROVOKING ITS MUTUAL BROADCAST AND WITH THE FIRST LAYER. / P P THE PROCESS IMPROVED DEPOSITION ON THE BASIC METAL AND RESISTANCE TO AGENTS SUCH AS THE SWEAT / P