967 results about "Ceramic metal" patented technology

A ceramic-metal composite articulation is provided with substantial elimination of wear debris, wherein a ceramic material is provided with superior mechanical properties tailored for articulating with ceramic articulations having high flexural strength (greater than about 700 MPa), high fracture toughness (greater than about 7 MPa^1/2) and a high Weibull modulus (greater than about 20), in comparison with presently available bio-ceramics such as alumina or zirconia. The mechanical property enhancement enables ceramic materials with greater reliability and significantly reduced in-vivo fracture risk to be obtained. Preliminary in-vitro wear performance, to several million cycles using established test protocols, of head/cup components in a prosthetic hip joint made from these ceramics also demonstrates the ultra low wear characteristics. These material properties substantially eliminate polyethylene (PE) wear debris mediated implant failures by offering an optimal combination of bio-mechanical safety and reliability with ultra low wear performance.

The disclosed method relates to manufacture of a near net-shaped products such as ceramic containing products such as ceramic-metal composites. The method entails forming a mixture of a build material and a binder and depositing that mixture onto a surface to produce a layer of the mixture. An activator fluid then is applied to at least one selected region of the layer to bond the binder to the build material to yield a shaped pattern. These steps may be repeated to produce a porous whitebody that is heat treated to yield a porous greenbody preform having a porosity of about 30% to about 70%. The greenbody then is impregnated with a molten material such as molten metal. Where the build material is SiC, the molten metal employed is Si to generate a SiC—Si composite.

A brake unit comprising at least one brake and at least one brake pad having at least one friction lining is described. The brake has a disk brake with a brake rotor made of a ceramic-metal composite (CMC) whose outer surface or surfaces at least partially form a friction surface for the at least one friction lining, and a disk brake cup that is mounted on the disk brake by way of one or more mounting elements. The friction surface of the disk brake has a hardness of approximately 1600 to 2500 HV, and the at least one friction lining has a coefficient of friction of approximately 0.3 to 0.5. The disk brake cup and/or the mounting elements form a corrosion-inhibiting attachment to the disk brake. The brake unit can be operated in corrosion-free fashion over a service life of at least approximately eight to 10 years or approximately 200,000 to 300,000 km.

A susceptor 24 includes a heater 38 disposed in a planar state, upper and lower ceramic-metal composites 40A and 40B disposed so as to sandwich the heater 38 from above and from below, and a ceramic electrostatic chuck 28 for attracting and holding an object to be treated, W. The electrostatic chuck is joined to an upper surface of the upper ceramic-metal composite 40A. The electrostatic chuck 28 has nearly the same coefficient of linear thermal expansion as that of the upper ceramic-metal composite 40A. Thus, peeling or cracking of the electrostatic chuck 28 due to the difference in thermal expansion and contraction between the electrostatic chuck 28 and the upper ceramic-metal composite 40A can be prevented.

The disclosure relates to structures and a method for providing an air cooled rotor with ceramic-metal composite friction surface plates, and in particular to a brake rotor including a rotor hat; a ventilation disc having a plurality of cooling vanes extending therefrom; a ceramic matrix composite (CMC) friction surface plate on each side of the ventilation disc; and a fastener for holding the CMC friction surface plates and the ventilation disc to the rotor hat.

A medical device generally includes a structural member having a surface wherein at least a portion of the surface is coated with a nanostructured material to a thickness of at least about 25 micrometers, and wherein the nanostructured material comprises a ceramic, ceramic composite, ceramic metal composite, or a combination comprising at least one of the foregoing. The implants have increased service lifetimes owing in part to improved wear and abrasion resistance, and may be useful for partial or full replacement of articulating and flexible hinge joints.

The invention discloses a metallic/ceramic composite armor and preparation method with ordered supporting structure of metallic materials as a framework and alumina ceramic materials as a core, and comprises the following steps: (1) a ceramic core plate with well-ordered pore canals is prepared and comprises working procedures such as forming, first sintering, hole machining and final sintering; (2) the ceramic core plate is sintered and metallized, all the surfaces of the finally sintered ceramic core plate is coated with Mo-Mn metal pastes, after being dried, the finally sintered ceramic core plate is metallized and sintered by being put under a protective atmosphere; (3) the metal is poured or vacuum heating treatment is made, the metal material is heated into a molten state, then poured into a die in which the ceramic core plate is arranged to have a thermostatic treatment, and finally cooled slowly to knock out. The invention can overcome weak binding of articulated connection and plane connection between the metal and the ceramic, etc., and realize high-strength binding between metallic/ceramic interfaces, moreover, the prepared metallic/ceramic composite armor with the sandwiches which can pass mutually is provided with the performance of light weight, high strength and impact resistance, thereby being suitable for a bulletproof composite armor plate and an armored panel on tanks and armored vehicles, etc.

A vessel for holding liquid having an outer ceramic shell and an inner metallic lining. The metallic lining may extend over the top of the shell to provide protection from damage. A base member may be provided. The metallic material may be any food safe metal, including stainless steel and aluminum and alloys thereof. The ceramic may be any suitable ceramic including glass. Handle and non-handles vessels are disclosed as are resealable and non-resealable vessels. The metallic and ceramic materials may be separate by an insulative gap.

A metal halide lamp (10) includes a discharge vessel (12) which may be formed of a ceramic material. The vessel defines an interior space (16). An ionizable fill (17) is disposed in the interior space. The ionizable fill includes an inert gas, mercury, and a halide component. The halide component includes an alkali metal halide, an alkaline earth metal halide component, and optionally at least one of a rare earth halide and a Group IIIA halide. The alkaline earth metal halide component includes at least one of a barium halide and a strontium halide. At least one electrode (18, 20) is positioned within the discharge vessel so as to energize the fill when an electric current is applied thereto. The lamp having a wall loading, when energized, which is sufficient to maintain an active tungsten halogen cycle.

The invention is a method of binding compound materials of the C/SiC and C/C, which belongs to the technology field of binding heterogeneous materials. The processing procedures are as following: 1. The surface of the e compound materials of the C/SiC and C/Cis pretreated, which comprise the surface of the connecting are grinding, cleaning, vacuum biscuit firing, preparation of double-layer metal film and microvacum heat treatment and so on. 2. The transition layer of the connecting area surface gradient of the compound materials of the C/SiC is coated and sintered. 3. The compound materials with the gradient transition layer as the felted phase is brazed with the metal in vacuum. The invention is characterized in that the gradient transition layer is directly used as the materials that bind the compound materials with the metal; the gradient transition layer is double-layered or multilayered (sub-layered) structure; from the inner basal body to the outer part of the compound materials, the melting points of active brazing alloy adopted by each sub-layer gradually lower, the coefficient of heat expansion that adjust volume percentage composition gradually lower and the coefficient of heat expansion of the sub-layers gradually rise. The brazing ceramic metal connecting piece of the invention has good strength, air tightness and wide application field, which is suitable for various non-metallic fibers, such as ceramics of SiC, Si3N4, Al2O3, AlN and so on and applicable for connecting the ceramic matrix compound materials with particulate reinforced with the metal.

A thallium-free high pressure ceramic metal halide lamp having superior dimming characteristics with a fill composition comprising MgI2 and CeI3. In addition, the fill chemistry comprises NaI and the halides of rare earth metals such as Dy, Ho and Tm.

A protective layer ( 7 ) formed of a metal or metal alloy capable of absorbing considerable thermomechanical deformations without causing fissures to appear is described for energy storage systems. In particular, the metal or the metal alloy has an expansion coefficient less than 6.10 ^{-6 °} C.^-1. The protective layer may be associated with a second layer ( 6 ) in insulating ceramic. A deposition method is described. Said protection is principally advantageous for microbatteries ( 10 ), the constituents of which are reactive to air.

A method for removing contaminants from an process stream that includes the use of reticulated material to filter the process stream. The reticulated material also facilitate process stream flow distribution in process units. The reticulated material can be packed with a void space between a substantial number of the reticulated material that can be varied to enhance filtration and flow distribution. The method of filtering also provides a method of removing contaminants leaving process equipment. The methods can be used on a variety of process streams and process equipment. The reticulated material can include ceramics, metallic materials, and chemical vapor deposition elements. The reticulated material can be of various shapes and sizes, and can also be catalytically active.

An abradable coating system (2-8) for a turbine or a compressor is proposed has at least one layer of woven or non-woven tissue (15) or foam made of: ceramic, glass, glass-ceramic, ceramic-metal composite and combinations thereof. A free-standing preformed element (18) has at least one layer of such a woven or non-woven tissue or foam is filled with fillers and/or binder. A method prepares such a system. Finally, a method for the repair of an abradable coating portion of a turbine or the compressor component (9) includes in a first optional step that the damaged portion is at least partly removed and/or cleaned and/or surface treated, and in a second step at least one free-standing preformed abradable coating element (18) or a complete abradable coating system is attached to the component (9), preferably by using a matrix, wherein for example only a center part (2) or a fraction of a center part (2) is replaced.

A method for directly joining ceramics (10) and metals (12). The method involves forming a structure having a ceramic component (10), a more refractory metallic component and a less refractory metallic-material-based interlayer (14) disposed between the ceramic component (10) and the metallic component (12); adding a eutectic forming reactant to the metallic interlayer (14); and heating the structure to approximately a eutectic melting temperature of the reactant and the interlayer to form a metallic-material-based eutectic liquid that interacts with the metallic component to form a bond that directly joins the ceramic and metallic components to one another.

The invention relates to a method for manufacturing a cellular ceramic-metal composite vertical mill roller and belongs to the technical field of metal-matrix composites. The method comprises the steps that firstly, a cellular porous ceramic preform is manufactured and then made into a cellular ceramic-metal composite wear-resisting insert, wherein the cellular ceramic-metal composite wear-resisting insert is provided with clearance ribs, insert holes and insert columns; heat treatment is conducted on the cellular ceramic-metal composite wear-resisting insert, the outer surfaces of the insert holes and the insert columns are coated with fireproof coatings, and the insert columns of the wear-resisting insert are inserted into the insert holes in pair, so that the wear-resisting inserts are firmly spliced; the cellular ceramic-metal composite wear-resisting insert is placed in a vertical mill roller sand mould, molten tough metal is poured, after the molten tough metal is solidified completely, the composite vertical mill roller is formed, overall heat treatment is conducted on the composite vertical mill roller, and then the cellular ceramic-metal composite vertical mill roller is obtained. According to the method, the wear-resisting composite insert does not need an external clamp, it is only required that insert columns are inserted into the insert holes and can be firmly spliced.

This invention relates to a vibration linear supersonic motor in a piezoelectric ceramic metal composite plate composed of a stator, a runner outputting moment and a pre-press unit pressing the runner, among which, the stator is composed of eight ceramic plates and a metal plate, a driving foot is set at the side of the metal plate, the ceramic plates are adhered to both surfaces of the metal plate to be polarized along the thickness direction of the stator, an outer electrode is coated on the surface of ceramic plates to excitation electrode for applying electric field along the direction vertical to the ceramic polarized direction and composite vibration is excited on the stator.

In order to provide a sealing arrangement for a fuel cell stack, which comprises a plurality of fuel cell units, which are arranged consecutively in a stacking direction, wherein the sealing arrangement has an electrical insulation effect, and which also has an adequate electrical insulation effect and an adequate mechanical strength at a high operating temperature of the fuel cell stack, it is proposed that the sealing arrangement comprises at least one ceramic-metal layer formed from a mixture of a ceramic material and a metal material.

This invention discloses a method for producing metal/metal ceramic composite, and its application. The composite is produced by compositing metal ceramic onto low alloy steel matrix. The metal ceramic is metal-matrix TiC, which comprises binding phase metal and hard granular TiC dispersed in binding phase metal. The low alloy steel matrix and the metal ceramic are metallurgically composited, and a diffusion/dissolution zone exists at the interface of the binding phase metal and the low alloy steel. A gradient transition layer of hard granular phase exists in the diffusion/dissolution zone. The binding phase metal is selected from Fe, Co and Ni. The TiC is prepared by self-propagating high temperature synthesis of Ti and C during casting of the low alloy steel. The self-propagating high temperature synthesis system comprises: binding phase metal 35-45 wt. %, Ti 44-52 wt. %, and C 11-13 wt. %. The metallurgical composition of the metal ceramic and the matrix has high strength. Therefore, the composite has good wear resistance and good impact resistance, thus is suitable for producing relieving of excavator.

Provided is a thermoplastic polymer composition, including a thermoplastic elastomer (A) and a polyvinyl acetal (B), wherein the thermoplastic elastomer (A) is a styrene-based thermoplastic elastomer or an olefin-based thermoplastic elastomer. Thus, a thermoplastic polymer composition is provided that has good flexibility as a thermoplastic elastomer composition, is excellent in mechanical properties and formability, and also itself has excellent adhesion to a ceramic, a metal, or a polar polymer. In addition, provided is a shaped article in which the thermoplastic polymer composition is adhered to a ceramic, a metal, or a polar polymer, in particular a shaped article adhered to a glass.

A method of carbonizing fabricated wood-based materials, such as wood composition board, is disclosed. Fabricated wood-based material is used as a precursor material, which is carbonized under controlled temperature and atmosphere conditions to produce a porous carbon product having substantially the same cellular structure as the precursor fabricated wood-based material. The porous carbonized product may be used for various applications such as filters, fuel cell gas separators, and battery electrodes, or may be further processed to form carbon-polymer or carbon-carbon composites. The carbonized product may also be converted to a ceramic such as silicon carbide. Additional processing may be used to form ceramic-metal or ceramic-ceramic composites.