Abstract: Nickel-plated shaped parts are produced by galvanic precipitation of nickel from aqueous-acid baths which contain as essential constituents one or several nickel salts, one or several inorganic acids and one or several brighteners. As brighteners are used thiourea salts having general formula (I), in which R.sup.1 to R.sup.4 stand for hydrogen, C.sub.1 to C.sub.18 -alkyl, which may be substituted by carboxyl groups, C.sub.1 to C.sub.4 -alkoxycarbonyl groups or cyano groups, C.sub.2 to C.sub.12 -alkenyl, C.sub.2 to C.sub.12 -alkinyl, C.sub.5 to C.sub.8 -cycloalkyl, C.sub.7 to C.sub.12 -phenylalkyl or phenyl, which may be substituted by one or two C.sub.1 to C.sub.4 -alkyl residues, C.sub.1 to C.sub.4 -alkoxy residues, halogen atoms, hydroxyl groups, phenyl groups, phenyl residues or C.sub.1 to C.sub.4 alkoxycarbonyl groups; Y sands for a chemical bond or for linear or branched alkylene, alkenylene or alkinylene having each up to 20 C.

Abstract: A composite plating coating includes a metal plating coating which is dispersed with an antibacterial and antifungal composition and/or a fragrant composition. Particularly, by dispersing carriers absorbed with an antibacterial and antifungal composition and a fragrant composition in a metal plating coating, a composite plating coating with an antibacterial and antifungal effect and a fragrance effect can be obtained.

Abstract: Methods for improving the erosion resistance of composite airfoils are disclosed as are the resultant structures. Wire mesh materials are coated with an erosion-resistant coating, formed to the shape of the airfoil leading edge, and molded into the leading edge during airfoil fabrication.

Abstract: Nickelized shaped articles are produced by electrodeposition of nickel from aqueous acidic baths containing as essential constituents one or more nickel salts, one or more inorganic acids and at least two brighteners by using as brighteners a mixture ofA) from 2 to 98% by weight of one or more cyclic N-allylammonium or N-vinylammonium compounds I ##STR1## where the nitrogen atom is part of a pyridine, quinoline or isoquinoline ring system which may additionally carry one or two C.sub.1 - to C.sub.4 -alkyl substituents or halogen atoms,R.sup.1, R.sup.3 and R.sup.4 are each hydrogen or C.sub.1 - to C.sub.4 -alkyl,R.sup.2 is hydrogen or methyl,m is from 0 to 4,n is from 1 to 4, andX.sup..crclbar. is an n-valent inorganic or organic anion which promotes solubility in water, andB) from 98 to 2% by weight of one or more acetylenically unsaturated compounds IIR.sup.4 --C.tbd.C--R.sup.5 (II)where R.sup.4 and R.sup.5 are identical or different and each is C.sub.1 - to C.sub.

Abstract: This is to a process for chromium plating metal articles spray rinsing the metal article after it has been cleaned, acid treated, nickel plated, and chromium plated over rinse tanks which are empty except for the rinse collected therein. The rinse water is recirculated to the respective treating tanks as needed.

Abstract: A process is described for electrolessly depositing or electrodepositing a solder layer composed of copper and silver and having an overall composition of silver/copper of from 75:25 to 70:30 and a total layer thickness of 15 to 100 .mu.m on a metallized ceramic. In this process, copper layers and silver layers are deposited alternately on the metallized ceramic. The number of layers is at least 3 and the individual layer thickness is 5 to 10 .mu.m.

Abstract: A process for producing nanocrystalline materials, and in particular nanocrystalline nickel having an average grain size of less than about 11 nanometers is described. The nanocrystalline material is electrodeposited onto the cathode in an aqueous acidic electrolytic cell by application of a pulsed D.C. current. The cell electrolyte also contains a stress reliever, such as saccharin, which helps to control the grain size. The novel product of the invention find utility as wear resistant coatings, hydrogen storage materials, magnetic materials and as catalysts for hydrogen evolution.

Abstract: A closely adherent metal coating having a uniform thickness and substantially free from pinholes is formed on the porous surface of a bonded magnet to improve its oxidation and corrosion resistance without lowering its magnetic properties. The coating is formed by electroplating from an aqueous solution not containing chlorine, and having a pH of 5 or above. More particularly, the solution contains mainly nickel sulfate, an electrolyte in the form of an organic acid salt not containing chlorine, and a basic electrolyte not containing chlorine, and forms a nickel coating on the magnet surface.

Abstract: A structural component made of an iron-base alloy is protected against corrosion by a coating which is produced to have three layers. First, a primary coating or first layer is applied, and then a top coating or second layer is applied. An intermediate layer is formed by a reaction between the first and second layers. Specifically, the intermediate layer is formed after application of the primary coating and of the top coating, by a heat treatment within a reaction temperature range in which intermetallic nickel aluminum or cobalt aluminum compounds are formed. A fourth sealing coat is optional. The primary coating is a nickel or cobalt coating. The intermediate layer comprises intermetallic compounds of nickel aluminide or cobalt aluminide formed by the reaction. The top coating is an aluminum base or aluminum alloy base high-temperature lacquer including a binder. Such a combination coating is especially resistant to fretting, oxidation and etching corrosion.

Abstract: The invention concerns acid nickel baths containing 1-(2-sulfoethyl)-pyridinium betaine

Abstract: An aqueous acid electroplating solution comprising nickel ions and one or more acetylenic compounds, specifically mono- and polyglyceryl ethers of acetylenic alcohols; acetylenic compounds useful in the electroplating solution; and processes using such solution and compounds. The invention is particularly useful for nickel plating an irregular surface such as a printed circuit board having through-holes.

Abstract: An electrolytic processing method for electrolytically processing the surface of a metallic member. A paste containing an electrolyte is prepared by mixing a paste-forming agent with a liquid electrolyte. The paste is placed between the metallic member and an opposing electrode. The metallic member and the opposing electrode are connected to an electrical power supply so that an electrical current is made to flow between the metallic member and the opposing electrode through the paste containing electrolyte, whereby the surface of the metallic member is electrolytically processed. Descaling, passivity treatment, coloring, polishing, plating and other electrolytic process can be performed on any type of metallic member at any desired place, by suitably selecting factors such as the compositon of the paste, condition of the electrical power supply and so forth.

Abstract: The present invention relates to a nickel plating solution to which a salt of an element in Group IIa in the periodic table is added, a method of copper-nickel-chromium or nickel-chromium bright electroplating and a film obtained by such a plating method. The nickel plating film is a bright electroplating film having excellent corrosion resistance.