Abstract: The invention relates to an anode assembly for electroplating comprising (a) an anode body comprising soluble anode material and (b) a shielding covering at least part of the anode body and comprising a self-passivating metal electrically connected to the anode body and allowing electrolyte transport therethrough. The shielding comprises at least one layer of self-passivating metal having no openings larger than 2 mm, preferably 1 mm, in width or the shielding comprises at least two layers of self-passivating metal wherein the openings of at least one layer are at least partially covered by the metal of another layer. The invention also relates to a shielded anode basket, a method for electroplating and the use of the anode assembly and the shielded anode basket.

Abstract: The present invention relates to an anode for electroplating, which has an anode base and a shield and is characterized in that additive degradation is reduced when it is used in electroplating.

Abstract: The invention relates to an anode assembly for electroplating comprising (a) an anode body comprising soluble anode material and (b) a shielding covering at least part of the anode body and comprising a self-passivating metal electrically connected to the anode body and allowing electrolyte transport therethrough. The shielding comprises at least one layer of self-passivating metal having no openings larger than 2 mm, preferably 1 mm, in width or the shielding comprises at least two layers of self-passivating metal wherein the openings of at least one layer are at least partially covered by the metal of another layer. The invention also relates to a shielded anode basket, a method for electroplating and the use of the anode assembly and the shielded anode basket.

Abstract: The present invention relates to an anode for electroplating, which has an anode base and a shield and is characterized in that additive degradation is reduced when it is used in electroplating.

Abstract: Refractory metals, especially niobium and tantalum, are deoxidized by heating at 600.degree. to 1300.degree. C. under a protective gas in an alkali or alkaline earth halide salt melt containing at least 10% fluoride.

Abstract: Spark plug for internal combustion engines with center and ground electrodes consisting of base metals, base metal alloys, or metallic composite materials, said center electrode or both electrodes being coated at least on their ignition areas with a metal or metal alloy having an average atomic weight of more than 100 and a melting point above 1500.degree. C. The metal coating is deposited by crystalline growth on the electrode surface in a thickness of 5 to 100 microns, preferably 15 to 60 microns using the vapor deposition technique or molten salt electrolysis. The cap-shaped coating is applied to the frustro-conical ignition area of the center electrode.

Abstract: A process of electro-plating elongate articles of passive metal with a thin, homogeneous coating of a noble metal. The article is passed through an electrolyte bath comprising a salt melt of alkali metals or alkaline earth metals containing a cyano radical. The articles are guided through the bath by guides of a material selected from oxides of aluminum, silicon, yttrium, or zirconium; nitrides of silicon, borium, or titanium; or carbides of silicon or titanium. The entire process is carried out in an inert atmosphere.