Screenshots
References
External links
Category:Braille technology
Category:Nuance Communications software
Category:Software synthesizers
Category:Windows text-to-speech software
Category:Microsoft softwareThe present invention generally relates to an article of manufacture which includes a ferromagnetic material, and, more specifically, pertains to a powder mixture useful in the production of ferromagnetic articles, and to ferromagnetic articles formed therefrom.
Ferromagnetic powders have been used in various types of devices, such as magnetic recording media, transformers, motors, generators, actuators, permanent magnets, and in the medical field for ferromagnetic stents and as medical implantation materials, for example. Ferromagnetic powders have also been used to make sintered ferromagnetic materials such as magnets and magnetostrictive alloys. Ferromagnetic powders are typically made by milling a metal containing magnetic material, for example iron, nickel, and cobalt, or their alloys to a particle size of less than about 100 micrometers. Such powders have been formed into single or multiple layer structures by admixing with binders and solvent and then pressing the resulting powders into a desired shape, with the powders having substantially random orientations, such as by tumble pressing.
Recently, ferromagnetic powders containing oxides, carbides, nitrides, and borides have been formed and have been used in ferromagnetic powders. These powders often exhibit superior magnetic characteristics in comparison to the prior metal containing ferromagnetic powders. For example, the oxide powders may provide a better magnetic orientation than prior metal ferromagnetic powders, and the carbide and boride powders may provide for better corrosion resistance.
In forming ferromagnetic materials, such as an orthopedic implant, a paste is formed from a powdered mixture of a ferromagnetic material and an organic binder, and the paste is applied to a substrate and sintered. The organic binder must provide the desired processing properties, such as workability and flow, and must provide a bond between the ferromagnetic material and the substrate. However, the organic binder must not present problems during the sintering step in ac619d1d87
Related links:
Comments