Abstract:
The present invention relates to coated fiber cement products as well as to methods for manufacturing such products. In particular, the present invention provides processes for manufacturing coated fiber cement products, these processes comprising the steps of: (i) providing a cured fiber cement product having at least one surface; (ii) optionally applying a primer to the at least one surface of the cured fiber cement product; (iii) providing a first layer of a first radiation curable composition to the at least one surface; (iv) partially curing the first layer of radiation curable composition by radiation; (v) providing a second layer of a second radiation curable composition to the partially cured first layer, the second radiation curable composition comprising pigments; and (vi) curing the first and the second layer of radiation curable composition by radiation. Finally, the present invention provides coated fiber cement products obtainable by such processes and uses of these fiber cement products as building materials. In particular embodiments, the coated fiber cement products produced by the processes of the present invention can be used to provide an outer surface to walls, both internal as well as external, a building or construction, e.g. as façade plate, siding, etc.
Abstract:
L'invention se rapporte à un procédé de fabrication (21) d'un élément céramique incrusté (10) d'une pièce d'horlogerie (1) comportant les étapes suivantes: a) former (22) un corps (11) en céramique; b) graver (23) au moins un évidement (12) dans une face (F) du corps (11) en céramique, chaque au moins un évidement formant l'empreinte d'un décor (13); c) modifier (24) l'état de surface du fond dudit au moins un évidement afin d'augmenter sa surface de contact; d) remplir (26) ledit au moins un évidement d'une céramique composite (16) afin de former ledit décor (13); e) aplanir (27) ladite céramique composite (16) afin de n'en laisser que dans le creux dudit au moins un évidement. L'invention concerne le domaine des pièces d'horlogerie.
Abstract:
Die Erfindungen beziehen sich auf ein System mit Mitteln zur Kennzeichnung von Wertgegenständen vor allem Edelsteinen und hier insbesondere geschliffenen Diamanten (Brillianten) und ungeschliffenen. Die Identifikationskennzeichnung wird gespeichert, und zwar elektronisch oder einem Zertifikat des Diamanten oder Brillianten beigegeben. Durch die Identifikationskennzeichnung wird eine Möglichkeit zur späteren Identifikation geschaffen. Die genannten Erfindungen sind darauf ausgerichtet, die Einzigartigkeit der Kennzeichnung, ihre Fälschungssicherheit und sichere Identifikation während der Echtheitsprüfung sicherzustellen. Die Aufgabe wird vorzugsweise dadurch erreicht, dass beim Aufbringen der für das blosse Auge nicht erkennbaren Identifikationskennzeichnung die entsprechende Oberfläche des Diamanten oder Brillianten mit Laserlicht von weniger als 400 nm Wellenlänge bestrahlt wird und gleichzeitig, nacheinander oder intermittierend der Einwirkung von Ultraschall und Laserlicht mit einer Wellenlänge von mehr als 500 nm ausgesetzt wird. Das Ergebnis wird dadurch erreicht, dass bei der Bestimmung der Echtheit der Identifikationskennzeichnung ein Verfahren benutzt wird, bei dem nach der Aufbringung der Kennzeichnung mehrere Interferenzbilder von ihr bei verschiedenen Wellenlängen der Sondierungsstrahlen aufgenommen werden. Während der Identifizierung nimmt man wieder bei denselben Wellenlängen Interferenzbilder der Identifikationskennzeichnung auf und vergleicht sie mit den gespeicherten; wenn die Bilder übereinstimmen, kann man davon ausgehen, dass die Identifikationskennzeichnung echt ist.
Abstract:
A method to apply nano-crystalline diamond onto a selected substrate, including preparing Nanodiamond slurry of nanodiamond particles dispersed in a medium. The medium may include a liquid or a sol-gel. The selected substrate is immersed in the Nanodiamond slurry for a predetermined period of time. Then the substrate is removed from the slurry. The substrate is then dried with a flow of inert gas. The substrate is left coated with a coating of the nanodiamond particles that are highly adherently held by van der Waals forces.
Abstract:
A gemstone micro-inscription system, comprising an energy source, a spatial light modulator, and a control, the control controlling a spatial light pattern modulation of the spatial light modulator, wherein the spatial light modulator exposes a photoresist on the gemstone, which selectively impedes an etching process to produce a pattern on the gemstone corresponding to the spatial light modulation pattern.
Abstract:
A ceramic matrix composite material (10) having a plurality of interlaminar stitches (16) as shown in figure. The stitches are formed by directing laser energy into the material to melt and recast zones of the material in a direction transverse to the layers of reinforcing fibers (12). The stitches not only improve the interlaminar strength of the material, but they also increase the through-thickness thermal conductivity of the material, thereby reducing thermal-induced stresses. The zones of recast material (18) may define holes (20) extending at least partially through the thickness of the material. The holes may be filled with a filler material (24), thereby mitigating any adverse loss-of-area effect created by the holes.
Abstract:
The invention relates to a method and a device for structuring the surface of different flooring materials which have already been laid and can also consist of mineral materials such as natural or cast stone. The aim of the invention is to structure the surface of flooring materials which have already been laid in such a way that said structure at least ensures improved anti-slip properties even in the presence of slippery substances such as water. To this end the invention provides for the use of a device with which at least one intensity-controlled laser beam can be moved at least one-dimensionally across the surface to be structured. The elements for guiding and shaping the laser beam(s) are housed in a mobile part of the device in such a way that said mobile part can be guided intermittently or continuously across the flooring surface to be structured and the structure can thus be created by means of the laser beam.
Abstract:
The invention concerns a fast prototyping method by solid phase sintering, using a laser, of a powder or a mixture of powders, in particular ceramic. The invention is characterised in that it comprises steps which consist in obtaining a succession of superposed digitised sections (10) of an object (12) to be produced, from a three-dimensional representation of said object; then in spreading in the form of a fine layer (14) the powder or mixture of powders heated to a temperature close to solid phase sintering temperature of said powder or mixture of powders; and finally in bringing the layer (14) to the sintering temperature by scanning with a laser beam (16) said layer such that a selected part (18) of the powder, corresponding to one of the digitised sections (10') of the object (12) to be produced, is sintered in solid phase by the additional energy supplied by the laser, the last two steps being repeated until all the digitised superposed sections of the object to be produced are obtained. The invention also concerns the associated device.