Abstract: A process for the anticorrosive treatment of metal components that have been heat-treated at a temperature of at least 100° C. and at least partially comprise zinc surfaces, wherein the surfaces of the component that consist of zinc already partially have a crystalline zinc phosphate layer, wherein the cleaned component is given an activating pretreatment with an acidic aqueous dispersion of insoluble phosphates having a pH of not less than 4 and the component is subsequently subjected to a phosphating conversion treatment before electrocoating is applied. The invention also comprises the use of metal components that have been treated in such a process, for the application of multilayer systems and in particular for the manufacture of bodies in automobile production.

Abstract: A metallic material is provided that is superior to an iron-based metallic material in all of adhesion, heat resistance, electrical conductivity, and corrosion resistance, and a method of manufacturing the metallic material is also provided. A metallic material is provided that includes an iron-based metallic material and an oxide layer formed on the surface of the iron-based metallic material. The oxide layer includes Fe and at least one kind of metal (A) selected from a group consisting of Zr, Ti, and Hf. There is also provided a method of manufacturing the metallic material.

Abstract: A composition for coating a metal substrate with a white to off-white or gray colored autodeposited coating comprising water, polymeric resin, HF and pigment particles comprising a core of titanium dioxide, an intermediate zirconia and/or alumina layer, and an outer organic layer, optionally the particles are treated with an anionic surfactant.

Abstract: A method of treating a zinc-galvanized metal surface, which has been chemically passivated, the treatment providing increased resistance to corrosion and improved adherence to a subsequently applied organic coating comprising contacting a chromium passivated, zinc-galvanized metal surface with a coating solution bath comprising from about 1 to about 10 parts per thousand, based on fluorine content, of an inorganic acid or ion that contains fluorine; at least 0.5 parts per thousand, based on transition metal cation content, of an oxide and/or a salt of nickel; and optionally, from about 0 to about 3.0 grams per liter of a polymer selected from the group consisting of polyacrylic acid, polymethacrylic acid, and C1 to C8 alkanol esters thereof; wherein the pH of the solution is from about 2.0 to 3.6 and the temperature of the solution is at least 60° C.; and thereafter sealing the treated surface.

Abstract: The invention relates to a method for a preliminary metallizing treatment of galvanized or zinc alloy-coated steel surfaces or joined metallic parts that at least partly have zinc surfaces, in a surface treatment encompassing several process steps. In the disclosed method, metallic coats of especially a maximum of 100 mg/m2 of molybdenum, tungsten, cobalt, nickel, lead, tin, and/or preferably iron are produced on the treated zinc surfaces. Another embodiment of the invention relates to an uncoated or subsequently coated metallic part which has been subjected to the disclosed preliminary metallizing treatment as well as the use of such a part for making bodies during the production of automobiles, building ships, in the construction industry, and for manufacturing white products.

Abstract: Chromium-free conversion coating treatment solutions and processes for depositing a colored layer on zinc or galvanized steel, aluminum, magnesium or their alloys, are provided comprising: hexafluorotitanate and/or hexafluorozirconate ions; molybdate and/or tungstate ions; one or more chelating complex formers; and a copolymer of alkylene phosphonic or alkylene phosphinic acid and one or more unsaturated carboxylic acids.

Abstract: Expandable, thermally curable compositions containing at least one epoxy resin, at least one polyester, at least one blowing agent, and at least one curing agent are useful as adhesives and structural reinforcement materials. When foamed and adhered to a metal substrate surface, such polyester-modified foamable compositions can exhibit improved adhesion to the substrate surface after exposure to a corrosive environment, as compared to compositions that do not contain polyester. Furthermore, these compositions can exhibit improved flow properties in the uncured state at temperatures between 50 and 100° C. They are granulatable, with the granules produced thereby having non-tacky surfaces at room temperature and being capable of being readily processed into molded objects by injection molding processes.

Abstract: A substantially lead-free lubricant for use in hot forging of metals, especially forging of aluminum and aluminum alloy components. The lubricant comprises one or more oils, graphite, and one or more phosphorus-based additives. Additional additives, such as metallic lubricants and dispersants may also be included. The lubricant does not burn when subjected to temperatures in excess of 300° C.

Abstract: An acid inhibitor concentrate is provided which contains water, at least one polyamino-aldehyde resin such as a quaternized polyethylenepolyamine-glyoxal resin, and at least one compound selected from the group consisting of acetylenic alcohols, ethoxylated fatty amines, ethoxylated fatty amine salts, and aldehyde-releasing compounds (such as hexamethylenetetramine). Such concentrates form useful metal cleaning and pickling solutions when combined with aqueous acid, wherein such solutions, when contacted with a metal surface, are effective in removing scale, smut and other deposits from the metal surface but exhibit a reduced tendency for the aqueous acid to attack or etch the metal itself.

Abstract: Improved lubricant and surface conditioner forming composition containing oxa acids and their methyl esters corresponding to general formula (I): H3C—(CH2)n—CH?CH—(CH2)m—O—(CH2CH2O)x—CH2—C(?O)—OR??(I) where each of m, n and x, which may be the same or different, is a positive integer and R represents H or CH3, when dissolved and/or dispersed in water is effective in reducing COF values on substrates that have been contacted with such a lubricant and surface conditioner forming composition and subsequently dried, even when the substrates have been conversion coated and rinsed before any contact with the lubricant and surface conditioner forming composition. Materials according to general formula (I) may be used together with other surfactants, including some constituents of previously known lubricant and surface conditioner forming compositions to provide improvements in COF, waterbreak performance, water drainage and resistance to dry-off of the conditioner.

Abstract: A method for producing colored layers on zinc, aluminum, magnesium or alloy surfaces. The surfaces are brought into contact with an aqueous treatment solution which is devoid of chrome, said solution containing, in total, 3-35 g/l persulfate ions and/or peroxodisulfate ions and not more than 10 g/l ammonia or ammonium ions, it has a pH value in the region of between 10-12 and a temperature in the range of between 30-80° C. The surfaces are brought into contact with the treatment solution for a period in the region of 0.5-5 minutes and optionally, they are covered with a coating based on organic polymers. The invention further relates to metal parts treated according to said method.

Abstract: Disclosed is a release on demand type corrosion inhibitor composition for a metal substrate formed from only non-electrically conductive film forming copolymer(s); a nitrogen containing functional group X, where the group X comprises a pyridine, a dihydropyridine, a pyrrole, an imidazole, or a mixtures thereof; and a metallate anion. The metallate anion binds to a nitrogen in the functional group X by ion pairing. A localized rise in pH is believed to cause release of the anion via a protonation/deprotonation reaction and the released anion suppresses the corrosion formation. The coating composition includes no electrically conductive polymers.

Abstract: The present invention discloses an improved cleaning composition for cleaning metal surfaces such as aluminum and aluminum-containing alloys. The cleaning composition of the present invention comprises water and an ethoxylate of an alcohol having Formula R1—OH wherein R1 is a saturated or unsaturated, straight-chain or branched aliphatic having from 12 to 80 carbon atoms; an inorganic pH adjusting component; and at least one surfactant that is different than the ethoxylate set forth above. The cleaning composition of the present invention also has an average water-break-free percent reduction of less than 50% after 7 days aging of a working composition prepared from the cleaning composition. The present invention also provides a method of cleaning a metal surface with the cleaning composition of the invention.

Abstract: A heat expandable baffle having a shape corresponding to, but smaller than, the shape of the cross section of a cavity to be sealed, and comprising a rigid support plate, a carrier for a heat expandable material and a heat expandable material mounted only to the outer periphery of the carrier. When activated by heating, the expandable material expand radially from the carrier to seal the cross sectional gap between the carrier and the cavity wall.

Abstract: The invention relates to an aqueous, chromium-free and curable corrosion protection agent for the first coating of metal surfaces, said agent containing at least one organic polymer or copolymer of at least partially acylated vinyl amines, for improving the properties of adhesion of the cured first coating to the metallic surface and to further organic coatings. The invention also relates to a method for producing a first coating comprising the agent according to the invention, and for applying further organic coatings, in particular those based on polyurethane resins and/or based on isocyanates and diols or polyols, and to a metal strip produced in this way or a metal sheet cut off same, which can optionally be shaped.

Abstract: Methods for deoxidizing metallic surfaces are disclosed. Such a method may include contacting a surface of a metal strip with one or more chemical solutions until a potential drop across a thickness of the metal strip is less than a pre-selected value. To process a metal strip such that it may be suitable for fabrication of a bipolar plate for use in a fuel cell, the metal strip may be processed until the potential drop is less then about 15 mV. A surface of the metal strip may be contacted for a first period of time with a first chemical solution having a pH of between 10 and 14. Thereafter, the surface may be contacted for a second period of time with a second chemical solution having a pH of between 1 and 3. A conductive organic coating may then be applied to the surface. Such methods are particularly suitable for use in connection with a coil coating process.

Abstract: Sprayable low-viscosity rubber damping compounds based on liquid rubbers or elastomers and vulcanization agents, which contain small quantities of structure-reinforcing fiber fillers, are notable for the absence of previously usual solid rubbers and have a very low viscosity in the application state. Acoustic compounds of this kind are sprayable with the aid of fully automatic application systems, and are preferably processed at the basic body stage in vehicle construction.

Abstract: Corrosion resistant coatings are formed on aluminum by contacting with aqueous solutions containing trivalent chromium ions and fluorometallate ions, the solutions being substantially free of hexavalent chromium. Trivalent chromium films formed on the aluminum surface when tested in 5% NaCl salt spray chamber showed corrosion resistance in excess of 168 hours. Trivalent chromium coated aluminum also serves as an effective base for paint primers.

Abstract: The invention provides a holding jig for supporting and fixing a solid material capable of being foamed by application of heat in a cavity of a hollow structure. The holding jig may be provided with a plate-like base body made smaller in diameter than the cavity of the hollow structure, a holding part that is provided in a predetermined width in the form of a ring on the periphery of one side of said base body and supports one side of the foamable material, a step part with predetermined height, which is projected in the form of a ring at the inner peripheral end of said holding part and supports the inner peripheral surface of the foamable material, and an attaching means with which the base body can be freely attached to or detached from the hollow structure. The holding part can be provided with a plurality of small holes that open from one side to the other side of the base body, preferably in a net or lattice pattern.

Abstract: A heat expandable baffle for sealing automotive cavities comprising a carrier plate with an outer perimeter and a strand of a heat expandable material along the major part of the outer perimeter, this strand circumscribing a central section of the carrier plate which is not covered by the heat expandable material, the outer perimeter defining a mean plane limited by the outer perimeter, the central section of the carrier plate being bent away from the mean plane in a way that the point on the central section which has the greatest distance from the mean plane lies at a distance from the mean plane which is at least 5% of the maximum linear length of the carrier plate, and/or the central section having a lumped mass distribution.