Abstract: A metallized article (10) having a non-conductive surface (11) and a plurality of depressions (12) in the surface (11). A first layer of metal (13) being mechanically bonded to the non-conductive surface (11), such that the mechanical bond is enhanced by the interaction of the first layer of metal (13) and the depressions (12). An intermediate layer of metal (14) bonded to the first layer (13). A finish layer of metal (15) being bonded to the intermediate layer (14). The finish layer (15) being a metal which readily accepts a high polish or shine. A process for metallizing such an article having a non-conductive surface including the steps of etching the surface of the article with fluoride containing salts and the depositing of a first layer of metal onto the etched surface. The process further including depositing an intermediate layer of metal in an electroless manner, and then depositing a finish layer of metal by electrolysis.

Abstract: An improved optical data storage medium is reponsive to incident electromagnetic radiation, and the surface or a surface region of the medium includes a layer of heat sensitive material which has a textured surface pattern in the form of a regular array of grooves or protuberances, the dimensions of the surface features which constitute said textured surface pattern being in the sub-micron range. The textured surface pattern is overcoated with a thin film of an alloy, said alloy comprising (1) a first component which is at least one of ruthenium, rhodium, palladium, osmium, iridium and platinum; and (2) at least one other metallic element, preferably from Groups Va, VIa, VIIa, and Ib of the Periodic Table of elements according to Mendeleev.The preferred alloy compositions for such data storage media contain platinum and tungsten.

Abstract: A bonded ceramic-metal composite substrate comprising a ceramic substrate having opposite surfaces and a copper sheet having a face directly bonded to one of the surfaces of the ceramic substrate, wherein the median surface roughness (R.sub.a) of the outer surface of the copper sheet is not greater than 3 .mu.m, and the maximum surface roughness (R.sub.max) of the outer surface of the copper sheet is not greater than 18 .mu.m. The invention improves the manufacturing reliability of various electronic devices such as semiconductor modules.

Abstract: A data storage medium is provided which is suitable for production or replication by moulding, casting, embossing or a similar process against a tool. The data storage medium comprises an optically sensitive layer at or adjacent to one surface of the medium, said one surface of the medium comprising a plurality of topographical features or structures disposed in a regularly repeating pattern, said pattern being free from undercutting so that the medium can be produced and/or replicated by molding, casting, embossing or similar process against a tool. The optically sensitive layer is preferably overcoated with a thin film of a metallic material which conforms to the topography of said surface.

Abstract: The invention relates to a plated steel sheet for cans which must have a good outer appearance for printing and high image clarity, and is a method of forming dry-plated layer 2 on the surface of steel sheet 1 having a central surface roughness of 0.10 .mu.m or less, and a plated steel sheet for cans formed by the method.

Abstract: A bonded body of aluminum and electroconductive polymer, said aluminum having a surface to which said polymer is bonded, and mainly having (HOO) face (H=1,2,4) as a crystal face at said surface.

Abstract: A sprayed member which has a ceramic-sprayed layer formed on the surface of a parent material of an aluminum alloy through a sprayed bond layer. A diffusion layer occupies 20 to 50% of the entire interface between the bond layer and the parent material. The interface between the diffusion layer and the parent material and the interface between the bond layer and the parent material are finely roughened to have a height of several microns. The diffusion layer and the fine roughness are formed by preheating the surface of the parent material at a temperature ranging from 260.degree. to 500.degree. C. prior to spraying the parent material with a material for the bond layer so that they can together enhance the adherency between the bond layer and the parent material.

Abstract: An amorphous metal-metal composite article comprising a metal and an amorphous metal thin sheet firmly bonded thereto and having high durability and reliability can be obtained by a method, wherein the surface roughness of a metal to be bonded with an amorphous metal thin sheet is adjusted to a certain surface roughness and an explosion shock is applied to an assembly of the metal and the amorphous metal thin sheet superposed thereon, under a condition that the moving velocity of the collision point of the amorphous metal thin sheet to the metal is higher than the sound velocity in the amorphous metal.

Abstract: Light alloy articles comprising a body of light alloy having a composite layer of heat-resistant fibers and light alloy and bonded to said body, and a surface layer of heat-resisting alloy sprayed onto said composite layer exhibit improved integrity and heat resistance when the heat-resisting alloy is plasma sprayed onto one surface of a preform of fibers and the light alloy is then cast to the opposite surface of the preform such that an interfacial layer is defined between the composite layer and the surface layer in which the fibers and light alloy are integrally incorporated with the heat-resisting alloy.

Abstract: The present invention relates to a process for forming improved bonds between components of electrical or electronic devices. The process of the present invention preferably comprises annealing a metallic substrate to form a substantially uniform, substantially continuous oxide layer on a surface of the substrate, exposing the oxidized substrate to a reducing atmosphere so as to form an irregular surface on the substrate, and bonding another component to the irregular surface.

Abstract: A data storage medium is provided which is suitable for production or replication by moulding, casting, embossing or a similar process against a tool. The data storage medium has a surface or a surface region which is strongly absorbent of at least a predetermined band of wavelengths of electromagnetic radiation. The surface or surface region includes a layer of a material which undergoes a large volume change or degradation and has a regular, sinuous textured surface pattern which is free from undercutting. The textured surface pattern is coated with a thin film of platinum or a platinum alloy, the thickness of the overcoating preferably being such as to give no more than 10% transmission of incident radiation.A method of storing information on such a data storage medium is also disclosed. The data storage medium may be prepared in blank form for use as the consumer desires, or it may be pre-recorded in part or in entirety.

Abstract: The invention is directed to a substrate for manufacturing single crystal thin films wherein the substrate is a replica pattern of a monocrystalline or single crystal cleavage plane. Such replica pattern may be formed by pressing a material in a softened state against the cleavage plane of the single crystal, with subsequent hardening, and also, by subjecting the single crystal cleavage plane to vapor deposition or plating, and thereafter removing the formed layer from the single crystal cleavage plane.

Abstract: A composite nickel plated sliding surface is obtained by the formation of a composite nickel plating film on a sliding surface of an automobile part such as an engine cylinder or piston by electroless nickel plating. The plating film contains at least one member of wear resistant particles having an average particle size of 0.1 to 1.0.mu. selected from SiC, TiC, WC, BC.sub.4, TiN, Al.sub.2 O.sub.3 or the like, and also at least one member of lubricating particles having an average particle size of 1 to 10.mu. selected from BN, MoS.sub.2, and Teflon. The nickel plating bath is adjusted to have a phosphorus concentration of 0.5 to 12%. When the matrix of the nickel plating film has a phosphorus concentration of 0.5 to 5%, the film hardness is improved.

Abstract: A composite of metal and resin comprising a resin layer and a metal layer having a surface roughness of a degree giving a lusterless appearance and a color of olive brown to black closely adhered through said surface to the resin layer is excellent in adhesive strength between the metal and resin layers, the metal layer being excellent in acid resistance, and is suitable for producing printed circuit boards.

Abstract: A copper foil resistant to acids and heat and yet easy to etch is obtained by forming a cobalt layer containing molybdenum and/or tungsten on the bonding surface thereof. Roughening of the foil surface prior to formation of the layer provides highly peel-resistant bonding of the foil thereat to resin-containing substrates of the type found in typical printed circuit boards. The provision of a chromate layer on the cobalt further improves the adhesion between the copper foil and resin-containing substrates.

Abstract: A data storage medium is provided which is suitable for production or replication by moulding, casting, embossing or a similar process against a tool. The data storage medium has a surface or a surface region which is strongly absorbent of at least a predetermined band of wavelengths of electromagnetic radiation. The surface or surface region includes a layer of a heat sensitive material which has a textured surface pattern the pitch of which is smaller than the shortest wavelength of the predetermined band of wavelengths, and the depth (peak-to-trough) of which is at least 100 nm. The surface pattern is free from undercutting, and can comprise an array of protuberances or one or more sets of grooves (which may be intersecting). The textured surface pattern is further coated with a thin film of a high-opacity material, e.g. gold, the thickness of the overcoating preferably being such as to give no more than 10% transmission of incident radiation.

Abstract: A method is described for improving the oxidation durability of overlay coatings. By polishing the surface to reduce the surface roughness to less than about 15 microinches AA the initial oxidation durability of the material, the point at which oxide spallation is first observed, can be increased from about 5 hours to about 200-300 hours.

Abstract: A process and apparatus for treating a metal foil to enhance its ability to be bonded to a substrate comprise immersing the metal foil in an electrolytic cell having an electrolyte bath solution containing copper and applying a current having regularly recurring pulses and preferably flowing in only one direction to the cell. The current causes a dendritic layer of copper to be deposited on at least one surface of the metal foil at a first current density and bonded thereto at a second current density. The process and apparatus are particularly suited for treating copper foil.

Abstract: A substrate for a magnetic recording disk employs an annular core of synthetic material having thin metal foils bonded to opposite faces, the metal foils serving to receive a magnetic recording material to form a magnetic recording structure. The inner surfaces of foils which are bonded to the core faces have applied thereto a thin, soft, deformable layer such as copper to prevent irregularities in the core faces from affecting the outer surfaces of the metal foils.

Abstract: A copper-clad laminate having special utility in printed circuit board production because of its extremely smooth and virtually pinhole-free surface is made by vapor depositing a copper film on a layer of silica on an aluminum carrier sheet, electrodepositing a layer of copper on the film to form a foil, bonding the foil to a substrate and finally stripping the foil and substrate laminate from the silica-coated carrier sheet.

Abstract: A coated article and method for producing the coated article are described. The article is coated with a system which provides protection against oxidation and corrosion and which significantly reduces the substrate temperature. An MCrAlY layer is applied to the article to be protected and a columnar grain ceramic is applied by vapor deposition to the MCrAlY coated article. An alumina lyaer which exists between the MCrAlY layer and the columnar ceramic layer provides for the adherence of the columnar layer to the MCrAlY layer. An important feature of the invention is that the interface between the MCrAlY layer and the alumina layer has a low surface roughness and this greatly improves the columnar ceramic layer adherence.

Abstract: A bearing laminate and method of producing the same, wherein a metallic suspension alloy having a tendency to dissociate is thermokinetically applied as a coating to a substrate, such coating in its solid state becoming dissociated. The substrate and the applied coating are mechanically compressed after the application and solidification of the latter. The surface of the substrate which receives the suspension alloy coating is especially prepared, either as a rough surfaced base or else as an aluminum or aluminum alloy surface having a surface activation and grain structure that is produced by a brief heating to a temperature between 450.degree. and the melting point of the aluminum or aluminum alloy, such heating destroying and removing the aluminum oxide.

Abstract: A support for a lithographic plate comprising an aluminum plate or an aluminum-alloy plate the surface of which has been grained such that the grain structure comprises pits and;(i) the distribution of pit diameter is such that the pits corresponding to 5% and 95% on a cumulative frequency curve for pit diameter are about 3.mu. or more and about 10.+-.1.mu. in diameter, respectively; and(ii) the center line average roughness (Ra) of said surface is on the range from about 0.6 to 1.0.mu.. A light-sensitive material for preparing a lithographic plate is also disclosed.

Abstract: Materials have been made that exhibit high absorption in the visible, near ultraviolet, and near infrared spectral region while simultaneously exhibiting low absorptivity in the thermal infrared. Exemplary of such materials is silicon which is etched in a reactive sputtering process in the presence of a sputterable material. Other materials exhibiting useful properties are produced by this method.

Abstract: A method of preparing a heat-transfer member having a porous metallic heat-transfer interface comprising the steps of:(a) disposing at least one surface of a substrate in contact with a solution containing a salt of a thermally conductive metal, and(b) depositing said metal from said solution upon said substrate so as to form a dendritic metallic layer thereon constituting said porous heat-transfer interface.

Abstract: Copper foil is subjected to a two-step electrochemical copper treatment to improve its bond strength, the first step of said treatment involving the use of a copper and arsenic-containing electrolyte. A treatment involving the use of the aforementioned two-step electrochemical copper pretreatment prior to the application of an electrochemical copper treatment. Treated copper foil and printed circuit boards resulting therefrom.