Process for making a metallic deposition on a carbon substrate and mirror obtained by this process

• Main Authors: ALPERINE, SERGE, JOSSO, PIERRE
• Format: Patent
• Language: English; French; German
• Published: 06.04.1994
• Edition: 5
• Subjects: APPARATUS THEREFOR; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIME, MAGNESIA; METALLURGY; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; PERFORMING OPERATIONS; PHYSICS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE

Selective addition of substance is used to produce, on the external surface of a solid carbon-based substrate (1), a surface coating of a material containing carbon and/or a carbide, adhering strongly to the substrate, having a high specific surface and exhibiting open pores (5) with a depth of at least 1 nm, and on this surface layer is deposited, substantially filling the said pores, a metallic material which has a high affinity for carbon, comprising at least one metal chosen from cerium, cobalt, chromium, iron, hafnium, iridium, osmium, palladium, platinum, rhodium, ruthenium, lanthanum, manganese, molybdenum, nickel, silicon, tantalum, thorium, titanium, uranium and tungsten. The metallic deposit (8) can be ground and polished without debonding to produce a low-inertia mirror.