| 摘要 |
<p>The present invention is a high-porosity metallic membrane element, comprising a sintered element having at least about 60% porosity, the sintered element comprising a matrix of substantially interconnected pores, each of the pores being defined by a plurality of dendritic metallic particles. A preferred form of the invention is made from pure nickel, preferably filamentous nickel powder. An article of manufacture made from the element includes a high-porosity metallic membrane filter, comprising the aforementioned sintered element having at least about 60% porosity, a filter housing, the housing thereby defining a filtered fluid flow path; and means for sealably connecting the casing to a fluid to be filtered. Another aspect of the invention is a method of making the high-porosity metallic membrane element, comprising the steps of depositing a substantially uniform low-density bed of a sinterable dendritic material into a mold suitable for applying compressive force thereto; compressing the low-density bed of sinterable dendritic material to form a green form; and sintering the green form. Filters made in accordance with this invention exhibit superior porosity, outgassing, and particle shedding characteristics when compared to the state-of-the-art.</p> |
