| 摘要 |
A powder metal composite is disciosed. The powder metal composite ineludes a substantially-continuous. cellular nanomatrix coniprising a nanornatrix material. The eornposite also inciludes a plurality of dispersed first particies eaeh comprising a first particie core material that comprises Mg, AJ, Zn or Mn. or a eornbination thereof dispersed in the nanomatrix; a plurality of dispersed second particles interrnixed with the dispersed first particies, each comprising a second particie core material that comprises a carbon nanoparticie; and a solid state bond layer extending tbroughout the nanomatrix betwcen the dispersed first and second particles. The nanomatrix powder metal composites are uniquely lightweight, high strength materials that also provide uniquely selectable and controllable corrosion properties, inc very rapid corrosion rates, useflul for making a wide variety of degradable or disposaMe articies, inciuding various downhole tools and components.
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