Abstract: Methods of preparing a surface of a cast zirconium alloy substrate for oxidation, the method including hot isostatic pressing a cast substrate of near shape dimensions, heating the cast substrate, machining the cast substrate to desired shape dimensions, and treating the surface of the cast substrate to accept an oxide layer. in some examples, treating the surface of the cast substrate may include polishing the surface, peening the polished surface, and finishing the peened surface. Additional or alternative examples may include heat treating a cast substrate of near shape dimensions to define a homogenized grain structure within the cast substrate, machining the heat treated cast substrate to desired shape dimensions, and surface treating the machined cast substrate to modify its structure to define a recrystallized modified grain structure defining a reduced grain boundary size.

Abstract: A magnetic pump in a pump well in a molten metal furnace with a long, relatively thin side wall that wraps around a significant fraction of the circumference of the pump, which facilitates creation of an eddy current based flow field in the molten material with better magnetic coupling, thereby enhancing the effectiveness of the pump. Breach of the well wall will not result in spillage of metal outside the furnace, and the well can be monitored for any such breach or other change so that the pump can be lifted out of the well to protect it from contact with the molten metal in the event of such a breach, or other appropriate action can be taken.

Abstract: An article and a method for forming the article are disclosed. The article comprising a composition, wherein the composition comprises, by weight percent, about 13.7% to about 14.3% chromium (Cr), about 9.0% to about 10.0% cobalt (Co), about 3.5% to about 3.9% aluminum (Al), about 3.4% to about 3.8% titanium (Ti), about 4.0% to about 4.4% tungsten (W), about 1.4% to about 1.7% molybdenum (Mo), about 1.55% to about 1.75% niobium (Nb), about 0.08% to about 0.12% carbon (C), about 0.005% to about 0.040% zirconium (Zr), about 0.010% to about 0.014% boron (B), and balance nickel (Ni) and incidental impurities. The composition is substantially free of tantalum (Ta) and includes a microstructure substantially devoid of Eta phase.

Abstract: A metal surface treatment method for a metal base material in order to improve the uniformity of a cathodic electrodeposition coating film, the method including: a surface treatment step for forming a chemical conversion film on a metal base material by contacting the metal base material with a metal surface treatment composition including zirconium and/or titanium ions and an adhesive imparting agent characterized in being at least one selected from the group consisting of (A) silicon-containing compound, (B) adhesive imparting metal ion, and (C) adhesive imparting resin; and a heating/drying step to heat and dry the metal base material, on which the chemical conversion film is formed, at 60° C. to 190° C. for at least 30 seconds.

Abstract: A magnetic pump in a pump well in a molten metal furnace with a long, relatively thin side wall that wraps around a significant fraction of the circumference of the pump, which facilitates creation of an eddy current based flow field in the molten material with better magnetic coupling, thereby enhancing the effectiveness of the pump. Breach of the well wall will not result in spillage of metal outside the furnace, and the well can be monitored for any such breach or other change so that the pump can be lifted out of the well to protect it from contact with the molten metal in the event of such a breach, or other appropriate action can be taken.

Abstract: The invention relates to a method for manufacturing an aluminum/metal assembly including the steps involving: thermally processing an aluminum sheet by heating said sheet to a temperature of between 80% and 100% of the melting temperature of the material of which it consists for a sufficiently long duration to create and stabilize by allotropic conversion an alpha alumina layer at the surface of said aluminum sheet, and then cooling same; providing a metal layer having a ductility less than or equal to the ductility of the aluminum sheet after cooling, said layer having surface irregularities having a depth greater than or equal to the thickness of the alpha alumina layer; and roll bonding the aluminum layer and the metal layer to produce the metal assembly.

Abstract: An article of manufacture comprises a ferritic stainless steel that includes a near-surface region depleted of silicon relative to a remainder of the ferritic stainless steel. The article has a reduced tendency to form an electrically resistive silica layer including silicon derived from the steel when the article is subjected to high temperature oxidizing conditions. The ferritic stainless steel is selected from the group comprising AISI Type 430 stainless steel, AISI Type 439 stainless steel, AISI Type 441 stainless steel, AISI Type 444 stainless steel, and E-BRITE® alloy, also known as UNS 44627 stainless steel. In certain embodiments, the article of manufacture is a fuel cell interconnect for a solid oxide fuel cell.

Abstract: A wear-resistant titanium metal member includes a substrate having a carburized layer formed by plasma carburizing and a polished surface having a surface roughness Ra of 0.01 to 0.80 ?m formed on the surface of the carburized layer, a titanium oxide layer superposed on the polished surface, and an amorphous carbon (GLC) layer superposed on the titanium oxide layer. The GLC layer is rigid and has a flat and smooth surface, so that it is free of stress concentration. By adjusting the plasma carburizing temperature and the concentration of the carburizing gas, carbon ions can penetrate the polished surface and form the carburized layer under the polished surface.

Abstract: A composition for application to a metal substrate comprising at least one metallate compound comprising hexafluorzirconate, zirconyl nitrate, and/or yttrium nitrate is provided. The composition may further comprise additives that promote corrosion resistance of the metal substrate, or the adhesion of subsequent coatings, such as one or more rare earth element salts; allontoin, polyvinylpyrrolidone, surfactants, and other additives and co-inhibitors. A metal substrate such as an aluminum or an aluminum alloy substrate coated with a metallate composition according to the present invention is also provided. A process for preparing a coating on a metal substrate to improve the corrosion resistance of the substrate or improve the adhesion of a subsequent coating is also provided. The process comprises treating the metal substrate with an aqueous solution comprising a metallate compound.

Abstract: A method of manufacturing a high strength galvanized steel sheet has a first heating step including heating to 400° C. to 750° C. in an atmosphere containing O2: 0.1 to 20 percent and H2O: 1 to 50 percent and heating to 600° C. to 850° C. in an atmosphere containing O2: 0.01 to less than 0.1 percent and H2O: 1 to 20 percent is applied to a steel sheet, a second heating step includes holding the steel sheet in an atmosphere containing H2: 1 to 50 percent and having a dew point of 0° C. or lower at 750° C. to 900° C. for 15 to 600 s, cooling to a temperature of 450° C. to 550° C., and holding is performed at that temperature for 10 to 200 s, and a galvanization treatment is applied.

Abstract: The object of the present invention is to provide a method for forming a coating on the surface of an aluminum or aluminum alloy using a trivalent chromate solution which dose not contain any harmful hexavalent chromium, in which the coating has an excellent corrosion resistance and adhesion with paints. The present invention provides a hexavalent chromium free trivalent chromate solution for an aluminum or aluminum alloy, in which the concentration of a trivalent chromium is in the range of from 0.01 to 100 g/L, the concentration of a metal selected from the group consisting of zinc, cobalt, nickel and a combination thereof is in the range of from 0.01 to 100 g/L and the concentration of a fluorine is in the range of from 0.01 to 50 g/L.

Abstract: The present invention provide a composition for a chemical conversion treatment capable of forming a chemical conversion film having both an excellent black appearance such that the L-value of the film is 28 even when the film is formed from the composition which has been aged, and good corrosion resistance. The composition is a water-soluble composition and comprising a trivalent chromium-containing substance, a cobalt-containing substance, a sulfur compound, and an organic phosphonate compound consisting of one or more compounds selected from the group consisting of organic phosphonic acids, ions of organic phosphonic acids, and organic phosphonates, and a nickel-containing substance as needed. It is preferable that the content of the trivalent chromium-containing substance be 1 to 10 g/L in chromium content equivalent, that the content of the cobalt-containing substance be 0.1 to 10 g/L in cobalt content equivalent, that the content of the sulfur compound be 0.

Abstract: The present disclosure relates to a method for accelerated hydriding of metallic substrates to evaluate the effects of hydrogen adsorption on substrate performance. The method includes applying to the substrate a metal that has an activation energy for hydrogen adsorption that is lower than the substrate activation energy for hydrogen adsorption. This is then followed by hydriding and evaluation of the effects of hydriding on substrate mechanical properties.

Abstract: The invention describes a method and compositions where the presence of cobalt and or nickel have been depleted from the surface layer(s) of a cobalt, chromium, nickel containing alloy.

Abstract: A method for hot dip coating a flat stainless steel product with more than 5 wt. % Cr with a protective metallic coating by: heating the flat steel product under an oxygen-free heating atmosphere to 100° C.-600° C. within 1-30 seconds; continuing heating to a holding temperature of 750° C.-950° C., by heating to 550° C.-800° C. under an inert or reducing atmosphere, holding within this temperature window for 1 to 15 seconds under an oxidizing atmosphere, and continuing heating under an inert or reducing atmosphere, until the holding temperature is reached; holding at the holding temperature for 10-120 seconds under a reducing atmosphere; and passing the flat steel product through a nozzle area under an inert or reducing atmosphere at 430°-780° C. and into a molten bath in which the flat steel product is coated with the metallic coating.

Abstract: An object of the present invention is to provide an R—Fe—B based sintered magnet having on a surface thereof a chemical conversion film with higher corrosion resistance than a conventional chemical conversion film such as a phosphate film, and a method for producing the same. The corrosion-resistant magnet of the present invention as a means for achieving the object is characterized by comprising a chemical conversion film containing at least Zr, Nd, fluorine, and oxygen as constituent elements and not containing phosphorus directly on a surface of an R—Fe—B based sintered magnet, wherein R is a rare-earth element including at least Nd.

Abstract: An aluminum-carbon composition including aluminum and carbon, wherein the aluminum and the carbon form a single phase material, characterized in that the carbon does not phase separate from the aluminum when the single phase material is heated to a melting temperature.

Abstract: Methods of preparing metal and metal alloys with partially microcrystalline anodic coatings are disclosed. Associated article therefrom are correspondingly disclosed. The partially microcrystalline anodic coatings exhibit steam, superheated steam, alkaline and acidic resistance. Partially microcrystalline anodic coating can be prepared by impregnation of micropores of a metal or metal substrate with metal precursor species, conversion of the metal precursor species into metal hydroxides, thermal treatment to dry out moisture and to promote phase transformation of the metal hydroxide product into metal oxides solids and bonding with metastable metal oxide substance in the pore structure of the metal or metal alloy substrate, and hydrothermal sealing to create sealed partially microcrystalline anodic coating.

Abstract: An object of the present invention is to make it possible, without necessitating an alkali pretreatment, to form a zinc oxide layer having excellent sliding properties on a hot dip galvanized steel sheet not subjected to alloying after galvanizing and thus having a relatively low degree of surface activity. Another object of the present invention is to make it possible to manufacture a hot dip galvanized steel sheet having higher area ratio of Zn oxide layer formed on a coating surface and larger thickness of the Zn oxide layer.

Abstract: The present disclosure relates to a chemically treated zinc-based plated steel sheet that is superior in weather resistance, water resistance, blackening resistance and film adhesion. A chemical conversion film having a thickness 0.5-10 ?m is formed by coating and drying a chemical treatment solution on a surface of an aluminum-containing zinc-based alloy plated steel sheet. The chemical treatment solution contains a fluororesin containing 0.05-5% by weight of a hydrophilic functional group selected from the group consisting of a carboxyl group and a sulfonic acid group and 7-20% by weight of a fluorine atom, the fluororesin in which a number-average molecular weight is 1,000-2,000,000, and an oxoate, a fluoride, a hydroxide, an organic salt, a carbonate or a peroxygenated salt of a group 4A metal.