Abstract:
Erfindungsgemäß ist ein Verfahren zum Kodieren bei der Wärmebehandlung eines Werkstücks vorgesehen. Dieses Verfahren umfasst die folgenden Schritte: Bereitstellen eines Werkstücks, Erwärmen des Werkstücks mit einer Wärmequelle, um das Werkstück einer Wärmebehandlung zu unterziehen. Das Verfahren zeichnet sich dadurch aus, dass zu zumindest einem vorbestimmten Zeitintervall während des Erwärmens dem Werkstück eine Kodierungskomponente oder ein eine Kodierungskomponente enthaltendes Kodierungsgas derart zugesetzt ist, dass die Verwendung der Kodierungskomponente im fertigen Objekt detektierbar ist, wobei die gasförmige Kodierungskomponente ein oder mehrere Isotope zumindest eines Gases umfasst und der Anteil des zumindest einen Isotops gegenüber dem natürlich vorkommenden Anteil dieses Isotops im Gas verändert ist und Protokollieren von Kodierungsinformationen, welche die Kodierungsinformationen und deren Ort im Werkstück beschreiben.
Abstract:
A method of dyeing metallic and/or ceramic objects in the course of a powder injection moulding process, wherein the metallic and/or ceramic objects are supplied with a dyeing gas, wherein composition and amount of the dyeing gas are adjusted according to a desired colour of the metallic and/or ceramic objects.
Abstract:
The invention relates to a method for preparing a powder of a metastable ? phase uranium- and molybdenum-based alloy. The invention comprises the following steps consisting in: a) bringing into contact at least a first reagent selected from uranium oxides and mixtures thereof, uranium fluorides and mixtures thereof, with a second reagent consisting of molybdenum and a third reagent consisting of a reducing metal, said first, second and third reagents being in divided form; b) reacting the reagents at a temperature above the melting temperature of the third reagent and in an inert atmosphere, leading to the formation of the alloy comprising uranium and molybdenum in the form of a powder having particles coated with a layer of oxide or fluoride of the reducing metal; c) cooling the resulting powder at a rate of 450°C/hour; and d) removing the layer of oxide or fluoride of the reducing metal that coats the particles of the powder of the alloy comprising uranium and molybdenum. The invention also relates to a method for producing a nuclear fuel, using the above-mentioned method. The invention is suitable for the production of nuclear fuel, such as MTR.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for fabricating a medical implant component wherein a bearing surface is formed by spraying particles of a required material onto the bearing portion of a substrate, and to provide such component. SOLUTION: The method may include steps of producing the substrate having a bearing portion from a first material, spraying the particles of a second material onto the bearing portion in accordance with a predetermined spraying technique to provide a coating thereon, and subjecting the coated bearing portion to a hot isostatic compression molding process, a vacuum sintering process, or a controlled atmospheric sintering process. The first material may be the same as or different from the second material. The predetermined spraying technique may be a thermal type spraying process such as a plasma spraying process or a high velocity oxygen fuel spraying process. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A method of making a ready-to-print cermet or cemented carbide powder of sintered granules includes the step of sintering the granules in a carburizing atmosphere. Due to the carburizing atmosphere, the granules will have less binder phase on the surface and will not sinter together and will be easy to deagglomerate and the granules will maintain its spherical shape. A powder made according to the method, as well as the use of the powder in an additive manufacturing process is provided.