An improved ceramic foam filter for filtering molten metal, in particular iron and iron alloys, is prepared from a ceramic slip containing silicon carbide and a colloidal silicon dioxide binder The ceramic filter has a solid matter content of at least 50% silicon carbide and at least 3% silicon dioxide

Ceramic foam filter

A stretchable electronic apparatus and method of producing the apparatus. The apparatus has a central longitudinal axis and the apparatus is stretchable in a longitudinal direction generally aligned with the central longitudinal axis. The apparatus comprises a stretchable polymer body, and at least one circuit line operatively connected to the stretchable polymer body, the at least one circuit line extending in the longitudinal direction and having a longitudinal component that extends in the longitudinal direction and having an offset component that is at an angle to the longitudinal direction, the longitudinal component and the offset component allowing the apparatus to stretch in the longitudinal direction while maintaining the integrity of the at least one circuit line.

Serpentine and corduroy circuits to enhance the stretchablity of a stretchable electronic device

A357 thixoforming feedstock produced by cooling slope casting

A porous ceramic material composed of a sintered porous body of a calcium phosphate compound is described. A multiplicity of capillary void paths having a diameter of 1 to 30 μm and a multiplicity of pores having a diameter of 1 to 600 μm are formed in the sintered porous body. At least part of the pores are connected to the exterior space of the sintered porous body through at least a part of the capillary voids. The porous ceramic material is valuable as a medical material, e.g., a substitute or prosthesis for bone or dental root, and also an electronic material and a genetic engineering material. When the porous ceramic material is embedded in a bone defect of human or animals, osteolytic cells, osteoblasts, erythrocytes and body fluid are selectively allowed to intrude through the porous ceramic material while almost no intrusion of osteoclasts and collagen fibers is allowed. Accordingly, the porous ceramic material can be utilized for inducing new-born bone, controlling resorption of bone with age, remedying bone defects.

Porous ceramic material and processes for preparing same

A method of recycling composite material comprising carbon fibres and a resin, the method comprising: providing a furnace comprising at least a heating portion; providing a transporter for transporting the composite material through the furnace; loading the composite material on the transporter and transporting the composite material through the furnace; detecting a percentage of oxygen in an atmosphere in the heating portion when the composite material has entered this portion; and removing resin from the composite material, as it travels through the heating portion of the furnace on the transporter, by means of chemical decomposition at a first temperature, with the resultant generation of fumes; wherein the generated fumes are removed from the heating portion in a controlled manner, such that the percentage of oxygen in the atmosphere in the heating portion is controlled.

Recycling carbon fibre

A process and apparatus is described for slurry casting an ingot having a non-dendritic structure across substantially its entire cross section. The casting mold has a first chamber for extracting heat from the molten material. The amount of heat extracted from the molten material and the cooling rate of the molten material is controlled to initiate growth of primary phase particles and to form a semi-solid slurry having a desired fraction solid. The mold also has a second chamber for casting the slurry into an ingot. Adjacent the exit portion of the first chamber and the inlet portion of the second chamber, a transition member is provided for delivering the slurry to the casting chamber and for preventing the ingot shell from extending back into the first chamber.

Process and apparatus for continuous slurry casting

There is provided an apparatus (30) and methods for the manufacture of metallic articles (49). A molten metal stream (36) is disrupted, such as by gas atomization (42), to form a plurality of molten metal droplets (38). The molten metal droplets (38) pass through a cooling zone (44) having a length sufficient to allow up to about 30 volume percent of each of the droplets (38) to solidify. A mold (46) then receives and completes solidification of the metal droplets (38). When under about 30 volume percent of the droplets (38) is solid, the droplets (38) retain liquid characteristics and readily flow within the mold (46).

Vertical casting process

Metal is spray cast onto a moving substrate using at least two sprays, the first of which has a solid fraction greater than 20% at the time the spray contacts the substrate, but less than the solid fraction of the second spray.

Metal spray forming using multiple nozzles

A metal extrusion process and apparatus in wich a semisolid material is fed into a passageway formed between first and second members, with one of the members being moved toward a die such that the moveable member draws the semisolid material through the passageway and through the die means.

Extrusion of metals

A molten metal spray-depositing apparatus employs a magnetic field-generating nozzle for atomizing a molten metal stream into a spray of metal particles. The magnetic driving field generated by the magnetic atomizing nozzle generates eddy currents which produce an induced field in the metal stream opposing the driving field and creating a torque which causes the stream to break up upon exiting the driving field. The nozzle has one of two configurations for generating one of two generic magnetic field geometries. In one configuration the nozzle utilizes a pair of spaced magnetic poles, such as provided by Helmholtz coils, for generating a transverse magnetic field geometry across the stream. In the other configuration the nozzle employs a solenoid coil for generating a solenoidal magnetic field geometry parallel to the stream. Preferably, the magnetic field of each geometry is a high frequency AC field since better coupling between the field and stream occurs and more eddy currents are induced at higher frequency.

Harvey P. Cheskis

Papers

Process and apparatus for continuous slurry casting

Vertical casting process

Metal spray forming using multiple nozzles

Extrusion of metals

Magnetic field-generating nozzle for atomizing a molten metal stream into a particle spray