Abstract:
A reinforced composite comprises: a reinforcement material comprising one or more of the following: a carbon fiber based reinforcing material; a fiberglass based reinforcing material; a metal based reinforcing material; or a ceramic based reinforcing material; and a carbon composite; wherein the carbon composite comprises carbon and a binder containing one or more of the following: SiO 2 ; Si; B; B 2 O 3 ; a metal; or an alloy of the metal; and wherein the metal is one or more of the following: aluminum; copper; titanium; nickel; tungsten; chromium; iron; manganese; zirconium; hafnium; vanadium; niobium; molybdenum; tin; bismuth; antimony; lead; cadmium; or selenium.
Abstract:
The invention relates to a method for producing a metallic part reinforced by ceramic fibres, according to which: at least one recess (10A) for an insert is machined in a metallic body (10) having an upper surface (10B); at least one insert (11) consisting of ceramic fibres in a metallic matrix is arranged in the recess; the insert is covered with a cover; the gap around the insert is placed under a vacuum and hermetically sealed; the entire metallic body with the cover is treated by hot isostatic compaction; and said treated assembly is machined to produce said part. The method is characterised in that the cover comprises an element (12) covering the insert (11) in the groove and projecting past the upper surface, and a film (14) covering the upper surface with said element (12). Especially the insert (11) is rectilinear, and the recess of the insert in the metallic body forms a rectilinear groove.
Abstract:
L'invention porte sur un procédé de fabrication d'une pièce métallique comportant des renforts internes formés de fibres céramiques, selon lequel - on usine, dans un corps métallique (10) présentant une face supérieure (10B), au moins un logement (10A) pour un insert, - on dispose au moins un insert (11) formé des fibres céramiques dans une matrice métallique dans le logement, - on recouvre l' insert d'un couvercle (12), - on met sous vide l'espace interstitiel autour de l' insert et on ferme ledit espace de manière hermétique, - on traite l'ensemble du corps métallique avec couvercle par compaction isostatique à chaud et - on usine ledit ensemble traité pour obtenir ladite pièce. Le procédé est caractérisé par le fait que l'insert (11) est rectiligne, et le logement de l'insert dans le corps métallique forme une rainure rectiligne (10A), le couvercle (12) étant dimensionné de façon à permettre sa mise en place sur l'insert (11) dans le logement après avoir été rétréci par refroidissement et à exercer un ajustement serré dans la rainure par dilatation de manière à fermer ledit espace.
Abstract:
A spline structure, in the form of an aeronautical brake drive bar (20), has wheel attachment points (21, 22) at its ends for engaging a wheel rim. Each wheel carries a regularly spaced series of these drive bars (20) for engaging friction discs carried by the wheel hub. The main body (26) of each brake drive bar (20) is formed from titanium internally reinforced by composite blocks (23, 24 and 25) each comprising a bundle of silicon carbide fibres contained in a matrix that is diffusion bonded within the main body (26). Other spline structures can be formed in a similar manner.
Abstract:
The present invention contemplates a high strength magnetic composite material system (35) comprising a plurality of high strength fibers (30) coupled together by a soft magnetic alloy (31). In one embodiment an internally reinforced structure is formed of the composite material system (35) and has strengths greater than the monolithic magnetic alloy. The structure having been consolidated through a combined pressure and thermal cycle.
Abstract:
The invention relates to a method for producing fibre reinforced metallic components having a complex geometry. Metal-coated SiC-fibres are connected with each other and with the component by means of pressure influence at a high temperature in a vacuum and in a positive material fit. The inventive method comprises the following steps: A) SiC-fibres (5) are mounted on a profile piece (2) having a simple geometry. Said SiC-fibres are held by means of a metallic counterpart (8) without exerting a force. B) The unity made of the profile piece, the fibres and the counterpart is plastically formed into the complex final shape between form tools (12, 13) by exerting a pressure at an increased temperature in a vacuum, whereby the fibres do not have a positive material fit with each other or with the metallic component. C) The formed unity is further packed and consolidated in a metallic and positive material fit between the form tools by further increasing the pressure or the temperature.
Abstract:
A composite material made of continuous aluminum oxide fibers reinforcing an aluminum matrix to form a strand (10) where the strands are formed into a structure (8) and brazed together in a vacuum using an aluminum brazing alloy (16). The brazing alloy (16) is preferably an aluminum silicon alloy. In winding filament wound vessels, an electric current may be used to heat the strands to cause a coating of the aluminum brazing alloy to melt.
Abstract:
Die Erfindung betrifft ein Fahrwerk (1) eines Kraftfahrzeugs mit zumindest einem aus einem metallischen Werkstoff bestehenden und Kräfte aufnehmenden oder weiterleitenden Bauelement, auf dessen Oberfläche zumindest ein bandförmiges und aus einer faserverstärkten Metallmatrix bestehendes Verstärkungselement (5) durch im weitesten Sinne thermisches Fügen aufgebracht ist. Erfindungsgemäße Fahrwerke von hinsichtlich ihres Gewichts und/oder ihrer Antriebsleistung unterschiedlichen Kraftfahrzeug-Typen und hinsichtlich seiner geometrischen Abmessungen gleichem besagten Kräfte aufnehmenden oder weiterleitenden Bauelement sind dadurch gekennzeichnet, dass bei Verwendung in einem Kraftfahrzeug-Typ mit höherem Gewicht und/oder höherer Antriebsleistung auf zumindest einen einen Lastpfad bildenden Oberflächen-Abschnitt dieses Bauelements ein Verstärkungselement (5) aufgebracht ist, welches Verstärkungselement (5) bei einem anderen Kraftfahrzeug-Typ mit geringerem Gewicht und/oder geringerer Antriebsleistung entweder überhaupt nicht oder in geringerer Dimensionierung vorgesehen ist.