Abstract:
A composite molding compound comprising a combination of metal and ceramic powders is disclosed. The powders are combined with a binder, a liquid carrier and other processing additives in a manner to provide uniform distribution of two phases in a material format that facilitates the molding of complex parts at relatively low pressures and temperatures using conventional injection molding machines. The products formed from these molding compounds may be designed with tailored physical and mechanical properties such as thermal conductivity, thermal expansion coefficient, density, elastic modulus and wear properties.
Abstract:
This invention provides a process for forming sintered, molded articles having improved dimensional stability. More particularly, this invention pertains to process for forming heat sinks. This process includes forming a substantially uniform copper composition comprising a polysaccharide binder, water, and copper particles; molding the copper composition under conditions sufficient to form a solid molded intermediate; and sintering the solid molded intermediate at a sufficient temperature and for a sufficient time to form a heat sink.
Abstract:
A method for rapidly manufacturing metal tooling utilizing injection molding techniques is described. Preferably, steel tooling is manufactured for use in an injection molding machine to produce near-net shape complex parts in high volume. The method is relatively inexpensive compared to conventional techniques for manufacturing complex metal tooling suitable for the rapid fabrication of complex shaped parts by conventional metal, ceramic and plastic processing.
Abstract:
Metal, ceramic and cermet articles produced from low viscosity suspensions. The articles include micro diameter hollow fibers, meshes and open cell foams. The articles are useful for filters, catalyst media, fuel cell electrodes, body implantation devices, structural materials, vibration and noise control, heat exchangers, heat sinks, heat pipes, heat shields and other applications.
Abstract:
A process for adjusting the level of water or water soluble additives in aqueous-based powder injection molding compounds for the purpose of recycling scrap material, controlling shrinkage or rehydrating dry feedstock. Depending on the objective, the process may require material granulation equipment, equipment for the addition or removal of water and mixing equipment. The molding compounds may be comprised of either recycled scrap material before being heat-treated or dry, virgin feedstock material.
Abstract:
This invention provides a composition and a process for forming sintered, molded articles having improved dimensional stability. More particularly, this invention pertains to a composition having a sugar additive that increases the solids loading potential of the composition and a process for forming injection molded articles therefrom. Increasing the solids loading potential of the composition, enables the formation of metal or ceramic articles attaining about 98-99% of their theoretical maximum density, without cracking or shrinking significantly during sintering.
Abstract:
The invention provides a method for forming deposits of superconducting ceramics by sequentially electrodepositing layers of metals, of a type and in proportion suitable for forming a superconducting ceramic, to form a precursor metal deposit, followed by oxidizing the precursor deposit to form a superconducting ceramic deposit. Optionally, the electroplating steps are conducted in such a manner that a patterned precursor deposit results, to obtain a patterned superconducting deposit after oxidation.
Abstract:
Metal, ceramic and cermet hollow articles produced from low viscosity suspensions. The articles are useful for filters, catalyst media, fuel cell electrodes, body implantation devices, structural materials, vibration and noise control, heat exchangers, heat sinks, heat pipes, heat shields and other applications.