METAL ARTICLE COATED WITH MULTILAYER SURFACE FINISH FOR POROSITY REDUCTION

• Main Authors: ABYS JOSEPH ANTHONY, FAN CHONGLUN
• Format: Patent
• Language: English; Korean
• Published: 15.06.2001
• Edition: 7
• Subjects: APPARATUS THEREFOR; BASIC ELECTRIC ELEMENTS; 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; CURRENT COLLECTORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; 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; LINE CONNECTORS; METALLURGY; PERFORMING OPERATIONS; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS; SEMICONDUCTOR DEVICES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

PURPOSE: A metal article that is coated with multilayer surface finish is provided to reduce porosity and prevent corrosion in all extreme environments. CONSTITUTION: A metal substrate(10) is coated with a multilayer surface finish(11) comprising, in succession, an amorphous metal underlayer(12) a corrosion-resistant metal middle layer(13) and one or more outer layers of precious metal(14). In one embodiment, the amorphous metal underlayer is Ni-P, the intermediate layer is nickel and the outer layer is palladium. The resulting structure is particularly useful as an electrical connector. 본 발명에 따라서, 금속 기판은 비정질 금속 하부층, 부식 방지 금속 중간층 및 하나이상의 귀금속 외부층을 순서대로 포함하는 다층 표면 피니쉬로 코팅된다. 실시예에서, 금속 기판은 구리 합금을 포함하고, 비정질 금속 하부층은 Ni-P이며, 중간층은 니켈이며, 외부층은 팔라듐이다. 최종 구조는 특히 전기 커넥터로서 유용하다.