Patent ID: 9284646
Filing Date: 2016-03-15
CPC Classification: B22F,C23C

Claim Text:
1. A process for forming a metal deposit at the surface of a solid substrate, said process comprising the steps of: a) a step of functionalizing at least one portion of the surface of the substrate with —O—P, —O—P—O, —O—S or —O—S—O groups, said groups being bonded to the surface of the substrate by means of an oxygen atom, said functionalization being carried out by bringing the substrate into contact with either one of a phosphating or sulfurizing agent respectively; b) a step of mixing the substrate with particles of a metal or of a metal oxide that sublimes at temperature below 1000° C., said particles having a size that ranges from 10 nm to 100 μm, either one of at the same time as the functionalizing step a), or after said functionalizing step; c) a step of heat treatment of the mixture obtained above at the end of step b), at a temperature that ranges from 100° C. to 400° C.; it being understood that said step c) is only carried out when a metal is used in step b) above, said step c) additionally being conducted at a temperature below the melting point of the metal in question and in air in order to oxidize said metal and obtain a metal oxide; d) a step of reduction under a reducing atmosphere and of concomitant sublimation, at a temperature between 0.1 T