Abstract: A corrosion-resistant coating for aluminum alloys preferably includes lithium molybdate and cerium. A conversion coating has been developed for aluminum surfaces that can substitute for the conventional chromate containing conversion coating. This new coating contains compounds such as lithium molybdate and cerium. The initial process consisted of two steps. Coated surface was tested to ASTM B117 requirement for 168 hours, showing little corrosion. Paint adhesion tests were also conducted with good results. Subsequent tests indicated that one step is adequate, but additional tests are needed.

Abstract: A titanium aluminide turbine blade (10) includes an aerofoil (12), a platform (14) and a root (16). A protective coating (2) is applied to the aerofoil (12) and the platform (14) of the turbine blade (10). The protective coating (2) comprises austenitic stainless steel. A chromium oxide layer (22) is formed on the protective coating (2). The protective coating (20) and chromium oxide layer (22) provides oxidation and sulphidation resistance for the titanium aluminide article (10).

Abstract: A weapon barrel includes a hard chromium layer provided on an inner barrel surface. The hard chromium layer contains at least 500 fissures/cm in a cross-sectional plane.

Abstract: In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent chromium ions, an oxycarboxylic acid compound is used as the reducing agent. This chromating solution causes neither gelation nor sedimentation of the solution even when hexavalent chromium ions are reduced to trivalent chromium ions at a reduction percentage of more than 50%. The chromating solution and a chromate film formed on a steel sheet may also contain an organic resin, phosphoric acid or a phosphoric acid compound, or a silica sol.

Abstract: This self-compensating spiral for a mechanical spiral balance-wheel oscillator in watchwork or other precision instrument, made of a paramagnetic alloy, contains at least one of the elements Nb, V, Ta, Ti, zr, Hf and is covered with a substantially uniform oxide layer having a thickness greater than or equal to 20 nm, formed by subjecting the said spiral to an anodizing treatment.

Abstract: A new stainless steel sheet has a stainless steel substrate which contains Cu at a ratio of 1.0 wt. % or more and has Cu-enriched grains precipitated at a ratio of 0.2 vol. %. The Cu-enriched grains are exposed to the outside through pinholes in a passive film generated on the substrate. Cu is preferably condensed at a Cu/(Cr+Si) weight ratio of 0.1 or more or a Cu/(Si+Mn) weight ratio of 0.5 or more with respect to Cr, Si and Mn present in the passive film or at an outermost layer of the substrate. Precipitation of Cu-enriched grains and condensation of Cu effectively improve solderability and electric conductivity of the stainless steel sheet.

Abstract: The present invention has for its object to provide a metallic surface treating agent for PCM use, which is capable of imparting high processability and corrosion resistance to PCM steel panels with the additional advantage of improved storage stability, a method for surface treatment of a PCM steel panel, a method of producing a PCM steel panel, and a PCM steel panel as produced by said method.

Abstract: The coating structure having a corrosion resistance of the invention contains a formation film formed on the surface of an aluminum alloy material. The formation film is subjected to a zirconium phosphate treatment. Because the zirconium phosphate reacts with an oxide film on the surface of the aluminum alloy to form a zirconium boehmite layer and to increase the adhesion of the coating material, a corrosion resisting structure is obtained without need of a sealing treatment while restraining the increase of the product cost. Also, a primer layer is formed on the outer surface of the formation film and the primer layer is composed of phosphomolybdic acid.

Abstract: The invention described herein is a bioactive composite material comprising thin layers of bioactive glass reinforced with thin ductile metallic layers, and the use of this material in bone replacement procedures.

Abstract: A chromium(VI)-free, chromium(III)-containing and substantially coherent conversion layer on zinc or zinc alloys presenting, even in the absence of further components such as silicate, cerium, aluminum and borate, a corrosion protection of approx. 100 to 1000 h in the salt spray test according to DIN 50021 SS or ASTM B 117-73 until first attack according to DIN 50961 Chapter 10; being clear, transparent and substantially colorless and presenting multi-colored iridescence; having a layer thickness of approx. 100 nm to 1000 nm; and being hard, adhering well and being resistant to wiping.

Abstract: Tooling for handling molten or hot solid aluminum and its alloys wherein the tooling is made of a passivated titanium aluminide (TiAl) intermetallic compound having a thin passivating surface oxide film formed in-situ thereon by contact with an oxygen-bearing atmosphere at elevated temperature. The surface oxide film passivates and renders the tooling non-wetted by and non-reactive with molten aluminum and its alloys and non-bonded to hot solid aluminum and its alloys.

Abstract: A method for increasing the surface area of foil electrodes of electrolytic capacitors. A valve metal is deposited by evaporation on a valve metal foil in a low pressure inert atmosphere including oxygen at a pressure one to two orders of magnitude lower than the pressure of the inert gas. The resulting surface is fractal-like. The foil thus treated is suitable as such for use as a cathode. Prior to anodization to produce an anode, a discontinuous of a valve metal oxide is deposited on the foil, to preserve the high surface area of the fractal-like surface and otherwise promote the formation of a dielectric coating whose interface with the metal foil has a high surface area.

Abstract: In a chromating solution comprising a water-soluble chromium compound and a reducing agent and in which hexavalent chromium ions produced by dissolution of the water-soluble chromium compound have been partly reduced with the reducing agent to trivalent chromium ions, an oxycarboxylic acid compound is used as the reducing agent.

Abstract: An anodized pressed valve metal powder pellet is described. The anodized pellet is particularly useful as an anode in an electrolytic capacitor having an improved breakdown voltage. The anodized pellet is formed by periodically holding the pellet at a constant voltage and allowing the current to decay over a period of time, or by turning the formation power supply off altogether during the anodization process. Either way provides an opportunity for heated electrolyte to diffuse from the anodized pellet.

Abstract: A method of manufacturing a superconductor wire which comprises: rolling a polycrystalline metallic substrate; heating the rolled polycrystalline metallic substrate at a temperature of 900° C. or more in a non-oxidizing atmosphere, whereby obtaining a rolled textured structure which is oriented such that the [100] plane thereof is parallel with a rolled plane and the <001> axis thereof is parallel with a rolled direction; heating the polycrystalline metallic substrate of the rolled textured structure at a temperature of 1,000° C. or more in an oxidizing atmosphere, whereby forming an oxide crystal layer consisting essentially of an oxide of the polycrystalline metal; and forming an oxide superconductor layer on the oxide crystal layer.

Abstract: The martensitic stainless steel product comprises a base steel and a dual oxide scale layer on a surface of the steel, wherein the dual scale layer includes an inner scale layer containing FeCr2O4 and Fe3O4 as main components and an outer scale layer containing Fe3O4 as a main component and having an outermost Fe2O3 layer; or includes an inner scale layer containing FeCr2O4 and FeO as main components and an outer scale layer containing FeO and Fe3O4 as main components and having an outermost Fe2O3 layer. If the product is a steel pipe, it exhibits excellent corrosion resistance when used for an oil country tubular goods or line pipe.

Abstract: This invention describes a corrosion-resistant, high-strength, low-modulus, titanium based alloy having about 5-11 weight percent Mo and about 6-15 weight percent Hf. This alloy is suitable for use in the fabrication of articles for medical and non-medical applications having low modulus, improved corrosion resistance and surface hardening. To increase strength, Cr, Si and Fe can be added in small amounts as well as increasing levels of interstitial oxygen, nitrogen or carbon. To maintain low elastic modulus, Mo can be partially substituted by Nb.

Abstract: The present invention relates generally to a new method and apparatus to enable high yielding double sided and/or multipass screening in the manufacture of multilayer ceramic packages. Also, the present invention enables the screened features to be buried partially or fully with flat surface being available for high yielding post-sinter operations.

Abstract: The invention provides an organic electroluminescent light emitting device comprising essentially comprising a substrate, a hole injecting electrode formed on at least said substrate, a light emitting layer and an electron injecting electrode containing a constituting material having a work function of up to 4 eV. The electron injecting electrode has a sealing film on a side thereof not opposite to the substrate. This sealing film contains one or two or more of an oxide, a nitride and a carbide of the constituting material for the electron injecting electrode, and so can be relatively easily formed continuously from the electron injecting electrode without any dedicated equipment for sealing films, while maintaining a high sealing effect. The invention also provides a process of producing such an organic electroluminescent light emitting device.

Abstract: The present invention provides a stainless steel having by far higher corrosion resistance than those of the prior art and a method of forming an oxide passivation film having a chromium oxide layer on the surface thereof.