corrosion (Total 61368 Patents Found)

A R-Fe-B or R-Fe-Co-B permanent magnet powder excellent in magnetic anisotropy and corrosion resistivity, having powder particles. The powder particles each consist essentially of, in atomic percentage: R: 10-20% B: 3-20%; at least one element selected from the group consisting of Ti, V, Nb, Ta, Al, a...
A hot working material of corrosion resistant copper-based alloy having a metal composition of 61.0 weight percent to less than 63.0 weight percent copper, 1.0 weight percent to 3.5 weight percent lead, 0.7 weight percent to 1.2 weight percent tin, 0.2 weight percent to 0.7 weight percent nickel, 0.03 weight percent to...
Metal materials in contact with aqueous systems are prevented from corrosion by a method which comprises adding a copolymer having a molecular weight in the range of 1,000 to 20,000 and formed between isobutylene and at least one member selected from among maleic acid, water-soluble salts thereof, and maleic anhydride ...
Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the alkaline metal, ammonium or amine salts thereof in combination with a fluoride and/or a fluorocarboxylic acid or salt thereof. The...
A supply and a method for preventing corrosion on heat exchange surfaces of a boiler. Additional material is fed to flue gases of a boiler by at least one supply for additional material. The supply includes a cooled case beam that is hollow inside and several nozzles for feeding the additional material....
Ceramic materials that are highly resistant to strong acids such as concentrated sulfuric acid and halides such as hydrogen iodide are employed to make block elements through which a large number of circular ingress channels extend in perpendicular directions and which are joined and piled in the heat exchanging medium...
A method for manufacturing a dissimilar metal joint member having an excellent corrosion resistance is provided. The method comprises immersing a member having an iron material and Al or an Al alloy material jointed together in a solution containing fluoro complex ions and zinc ions to cause metallic zinc to be deposit...
Process includes providing a silicide-containing bond coat layer overlying a silicon-containing substrate, optionally forming a silica scale layer adjacent to and overlying the bond coat layer by preoxidizing the bond coat layer, and providing an environmental barrier coating overlying the bond coat layer. The environm...
Incoherent millimetre wave, sub-millimetre wave and terahertz test signals are used to probe metal substrates covered by a protective coating or outer layer, such as paint or thermal insulation, obscuring direct assessment of the substrate. The incoherent test signals, provide signal dispersion and angular variation of...
By a method and a device for preventing corrosion on and in the region of a gas inlet nozzle during nitric acid condensation, contact of the condensing gas with the nozzle and with the surroundings of the nozzle are supposed to be minimized. This is achieved in that the gas inlet nozzle has a sleeve on the inside in th...
An electrochemical corrosion potential sensor has a sensor unit, a lead wire and a quasi-reference electrode. A sensor unit includes a tube-shaped insulator, a tube-shaped metal casing joined to an end portion of the insulator, and a Pt electrode joined to another end portion of the insulator. A lead wire connected to ...
Bacterial contamination of industrial water systems lead to bacterial induced corrosion. This invention provides a method for control of corrosion of industrial water systems caused by bacteria by the destruction of targeted problematic bacteria with naturally occurring, non-engineered bacteriophage virulent for target...
There is provided a water-based ink for ink-jet recording including a self-dispersible carbon black modified by carboxylic acid group, a water, and a water-soluble organic solvent, wherein a weight concentration of phosphate ion in the water-based ink is not more than 35 ppm. The water-based ink for ink-jet recording h...
The disclosure relates to curable polyureasil compounds, methods related to curing of such compounds via hydrolysis and/or condensation to form coatings on a substrate, and coated articles formed from the curable polyureasil compounds. The polyureasil compounds are generally hydrocarbon-based, including multiple urea g...
The present invention provides a high-corrosion-resistance hot-dip galvanized steel sheet having excellent appearance uniformity. The steel sheet includes: a coating layer containing Al: 4 to 22 mass %, Mg: 1 to 6 mass %, and Si: 0.001 to 1 mass %, and a balance being composed of Zn and inevitable impurities formed on ...
Various examples are provided for corrosion detection in structural tendons. In one example, among others, a method includes injecting current through a portion of a tendon assembly including a tendon at least partially encased in grout, where the current is injected through the portion of the tendon assembly via conta...
A battery comprises a first electrode, a second electrode, an electrolyte, and an electron collector associated with the first electrode, the electron collector having a surface treatment, such as a protection layer, that reduces corrosion of the electron collector by the molten salt electrolyte....
The invention relates to a system comprising a silicate and a base which is a gas at room temperature, for inhibiting corrosion from aqueous based formulations within aerosol containers. In particular for tin-plated aerosol canisters and in particular aerosol canisters containing aqueous alkaline aerosol formulations....
Disclosed is a method for the cathodic protection (KKS) of the reinforcements of ferroconcrete edifices against corrosion. According to said method, a) one side of the structural joints of the concrete supporting elements is sealed, b) the KKS anodes are introduced into the structural joints, c) an ionically conductive...
L'invention concerne une méthode de pose d'un pipeline sur un fond marin à partir d'une barge de pose, le pipeline comportant un revêtement interne résistant à la corrosion qui est étroitement adapté à un contact métallique sur un matériau de tuyau externe qui est moins résistant à la corrosion....
La présente invention concerne un gyrolaser annulaire utilisant des anodes (4) plaquées d'un matériau hautement résistant à la corrosion de façon à prolonger la vie du gyrolaser annulaire. Ce matériau crée un environnement devant empêcher la dégradation de la cathode (6) et des miroirs (8) du gyrolaser a...
La présente invention concerne un procédé économique de formation d'un revêtement hydrophobe sur un substrat, ainsi que des substrats revêtus. Ledit procédé consiste, plus précisément, à appliquer des poudres amorphes d'un alliage sur le substrat par un procédé de pulvérisation à froid. L'inv...
L'invention concerne un séparateur métallique pour piles à combustible à électrolyte polymère (PEFC) qui présente d'excellentes caractéristiques en termes de résistance à la corrosion, de conductivité et d'aptitude au formage, qui est fabriqué à faible coût. Des couches minces sont fabriquées...
Method and means for determining the corrosion status of a coated undergrd metallic object without the necessity of excavation. An electrical charge is produced on an area of the pipe, and the rate at which the charge decays is measured. The degree of corrosion of the object is measured as a function of the rate of de...
The present invention relates to a composition and method for inhibiting chloride-induced corrosion and limescale formation on ferrous metal surfaces and alloys in process systems in which aqueous solutions are concentrated, the composition containing a corrosion inhibiting amount of at least one polycarboxylic acid an...
Surface treated steel sheet for fuel containers having excellent corrosion resistance, formability and weldability is provided. A steel sheet containing 0.0005-0.0040% of C, 0.005-0.020% of P, 0.0005-0.0040% of N, and 0.0005-0.0030% of B has on at least one surface a first coating layer constituted as a Zn coating laye...