Abstract:
The invention relates to a method for preparing a conductive electrode comprising applying a precursor for electrocatalytic or protective coatings on a conductive electrode substrate, irradiating the conductive electrode substrate and the precursor with near infrared (NIR) radiation to form an electrocatalytic or protective coating on the electrode substrate. The invention also relates to an electrode substrate or electrode obtainable by the method, and the use thereof.
Abstract:
The method for making a multilayer composite having one or more colors brings together a number of acrylic layers, which are partially cured in a first step and completely cured in a second step. The curing takes place with actinic radiation, such as accelerated electrons, UV radiation or X-ray radiation, the curing unit operating with different dosage rates during the two steps. The curable acrylic layers are applied to the respective supporting layers by screen printing or stencil printing, or else may be applied to the supporting layers by casting or with the aid of printing rollers.
Abstract:
A method of making a composite polymer of a molecularly doped polymer. The method includes mixing a liquid polymer precursor with molecular dopant forming a molecularly doped polymer precursor mixture. The molecularly doped polymer precursor mixture is flash evaporated forming a composite vapor. The composite vapor is cryocondensed on a cool substrate forming a composite molecularly doped polymer precursor layer, and the cryocondensed composite molecularly doped polymer precursor layer is cross linked thereby forming a layer of the composite polymer layer of the molecularly doped polymer.
Abstract:
A method of coating an inner surface of a weapon barrel includes the following steps: directing a laser beam against the inner barrel surface to cause melting of regions thereof; introducing a coating material in one of powder, wire and ribbon form into the laser beam for melting the coating material to produce in the surface regions a molten bath composed of the molten coating material and a material of the weapon barrel; and moving the laser beam inside the weapon barrel axially thereof and relative thereto, whereby the molten substance of the bath becomes rigid as the laser beam moves away therefrom.
Abstract:
The invention concerns a process for coating a metallic or semimetallic surface in which coating molecules containing reactive groups are bound covalently to the surface by irradiation with light and it also concerns a structured coated surface.
Abstract:
In a method of applying a ceramic layer to an under-layer having a relatively low melting temperature, in particular a synthetic resin under-layer, particles of a ceramic material are provided on such an under-layer and, by heating, a mechanical bond between ceramic particles and the under-layer is brought about. By means of a laser device, a temperature is generated, for a time of the order of or shorter than the melting time of the under-layer, which is at least effective to obtain mutual compacting and/or sintering of the ceramic particles.
Abstract:
Process for the production of powder finishes on metallic or non-metallic surfaces, characterized in that powder coating compositions are used which contain resins which may be crosslinked by means of functional groups capable of forming hydrogen bonds, wherein the functional groups are present at a concentration of greater than 100 mmol/kg of powder coating composition, the powder coating compositions are applied to the substrate and are melted and cured by NIR irradiation.
Abstract:
A method for producing coated particles includes the steps of converting particles consisting of a compound of one of (a) a metal with a non-metal or (b) a semi-metal with a non-metal to an aerosol form; contacting the particles in aerosol form with a gas including at least one aromatic compound; and guiding the particles in aerosol form together with the gas through a plasma zone of a microwave plasma. The at least one aromatic compound is preferably selected from the group consisting of benzol, benzol derivatives, naphthalene, and naphthalene derivatives. The gas preferable further includes at least one metallocene which is preferably selected from the group consisting of ferrocene or magnesocene.
Abstract:
A method for mask-free molecular or atomic patterning of surfaces of reactive solids is disclosed. A molecular-scale pattern of adsorbate molecules is used in place of the conventional macroscopic “mask”. Molecules adsorb at surfaces in patterns, governed by the structure of the surface, the chemical nature of the adsorbate, and the adsorbate coverage at the surface. The surface is patterned and then marked or imprinted with the pattern by inducing localised chemical reaction between adsorbate molecules and the surface of the solid, resulting in an imprint being formed in the vicinity of the adsorbate molecules. In one aspect of the invention, photoinduced or electron-induced reaction of the patterned adsorbate leads to patterned reaction with the surface. The reaction can take the form of patterned attachment to the surface (patterned “writing” or “doping”) or patterned removal of atoms from the surface (“etching” which takes place in the initial reaction or through subsequent irradiation of the patterned surface). The adsorbate when irradiated with light, electrons or ions imprints a pattern on the substrate by localised reaction. The new method is exemplified by the case of a silicon substrate and chlorobenzene molecules which first adsorb in a pattern on a silicon crystal, and which when irradiated with light or electrons chlorinates the crystal in a similar pattern to that of the adsorbate. The method is suitable for the writing, doping or etching of molecular-scale features. The molecular scale imprinted patterns may be used to produce quantum confinements on the surfaces of nanoscale metal or semiconductor wires or films which will result in diffraction of electrons of selected energies. Variation of voltage or illumination may be used to vary the energy of the electrons.
Abstract:
A method and apparatus are provided for improving the durability of lubricating layers on the surfaces of disks. The lubricating layers on the disks are exposed to ultraviolet and infrared radiation of sufficient duration and energy to reduce the total thickness of the layer but retain at least about 40% of the thickness of the remaining layer in bonded form. The useable lifetime of the lubricating surface is prolonged by treatment of the lubricating layer in this manner.