摘要:
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Sinterung von Objekten. Die Vorrichtung zur Sinterung eines Objektes umfasst einen Hochtemperaturofen, in dem das Objekt aufgenommen und erhitzt wird, eine Öffnung in der Wandung des Ofens; eine Lichtquelle; und einen Detektor zur Erfassung des vom Objekt gestreuten Lichtes der Lichtquelle, wobei Lichtquelle und Detektor auf derselben Seite des Objektes angeordnet sind, sodass durch die Öffnung das Oberflächenprofil mindestens eines Teilbereiches des Objektes auf Basis des von dem Objekt gestreuten Lichtes bestimmbar ist; Lichtquelle und Detektor durch einen Laserlichtschnittsensor realisiert sind, sodass Laserlicht durch die Öffnung des Hochtemperaturofens auf einer der Lichtquelle zugewandten Oberfläche des Objektes als Linie abbildbar ist und das am Objekt gestreute Laserlicht in einem Detektor detektierbar ist, sodass unmittelbar entlang dieser Linie das Oberflächenprofil bestimmbar ist.
摘要:
A method of and system for recirculating a fluid in a particle production system. A reactor produces a reactive particle-gas mixture. A quench chamber mixes a conditioning fluid with the reactive particle-gas mixture, producing a cooled particle-gas mixture that comprises a plurality of precursor material particles and an output fluid. A filter element filters the output fluid, producing a filtered output. A temperature control module controls the temperature of the filtered output, producing a temperature-controlled, filtered output. A content ratio control module modulates the content of the temperature-controlled, filtered output, thereby producing a content-controlled, temperature-controlled, filtered output. A channeling element supplies the content-controlled, temperature-controlled, filtered output to the quench chamber, wherein the content-controlled, filtered output is provided to the quench chamber as the conditioning fluid to be used in cooling the reactive particle-gas mixture.
摘要:
An inorganic, intermetallic compound is characterized in that the compound contains at least two elements per formula unit and consists of at least two phases, at least one phase being semiconductive or semimetallic, and these at least two phases being immiscible with one another and thermodynamically stable. The invention allows the thermal conductivity of semi-Heusler alloys to be reduced while at the same time electrical conductivity and thermal stress to be maintained.
摘要:
The invention relates to a method for producing a target by means of thermal projection, especially by plasma projection, said target comprising at least one compound selected from refractive metals, resistive oxides, and volatile oxides. The method is characterised in that at least a fraction of said compound in the form of a powder composition of the compound is projected by thermal projection onto at least part of the surface of the target, under a controlled atmosphere, and powerful cryogenic cooling jets directed towards the target during its construction are used.
摘要:
A fine particle comprising a core and a coating, wherein the coating comprises a substantially monomolecular layer of organic molecules. The fine particle being produced by a process comprising introducing a core material into a plasma stream, thereby vaporizing some or all of the core material; cooling the core material downstream from where the core material was introduced thereby creating particles of the core material; and coating the particles of the core material with organic molecules in an injection zone, wherein the injection zone is downstream of a region where the particles of core material are formed, or wherein the cooled particles of core material are coated with organic molecules in a coating chamber by applying a liquid coating material and/or a solution of coating material to the core material; where in the coating chamber is downstream of a region wherein the particles of core material are formed.
摘要:
Methods and devices for the continuous manufacture of nanopErticles, microparticles and nanoparticle/liquid solution(s) are disclosed. The nanoparticles (and/or micron-sized particles) comprise a variety of possible compositions, sizes and shapes. The particles (e.g., nanoparticles) are caused to be present (e. g., created) in a liquid (e.g., water) by utilizing at least one adjustable plasma (e.g., created by at least one AC and/or DC power source), which plasma communicates with at least a portion of a surface of the liquid. The continuous process causes at least one liquid to flow into, through and out of at least one trough member, such liquid being processed, conditioned and/or effected in said trough member(s).
摘要:
The present invention relates to ultra-hard cutting elements, and in particular cutting elements or compacts formed by a pulsed electrical field assisted HPHT sintering process or a spark plasma HPHT sintering process. In an embodiment, a method of forming a polycrystalline ultra-hard material includes providing a mixture of ultra-hard particles, placing the mixture of ultra-hard particles into an enclosure, placing the enclosure into a press cell assembly having a heater, applying a repeated high-energy pulse of direct current to the heater to heat the ultra-hard particles, and pressing the enclosure at sufficient pressure to form a polycrystalline ultra-hard material.
摘要:
The invention relates to a method for producing components that have at least partially biocompatible surface areas. A mixture from a powdery biocompatible material and a binder is introduced into an injection mold by way of an injection molding method or is applied to a surface to be coated by way of injection molding method, the components so obtained being then subjected to debinding and sintering. The powdery biocompatible material used is a mixture that consists of particles of a particle size of between 700 nm and 50 μm and of 5% by weight to 50% by weight of particles of a particle size of less than 700 nm.
摘要:
The heat conductivity of an aluminum composite material containing a fibrous carbon material is enhanced. In order to realize this, a spark plasma sintered body having a fibrous carbon material compounded in a metal matrix powder of aluminum or the like is fabricated. At the time of fabrication, an aluminum powder serving as a matrix mother material is compounded with an Al alloy powder such as an Al-12Si powder having a melting point lower than the sintering temperature of the mother material. During the process of sintering the aluminum powder, the Al alloy powder is melted, whereby the heat conductivity between the aluminum powder particles and between the aluminum powder particle and the fibrous carbon material is improved.