Posted: April 21, 2009

Nanomaterials Company Announces New Line of Metal and Metal Alloy Nanoparticles

(Nanowerk News) Nanomaterials Company is now manufacturing metal and metal alloy nanoparticles. This new material type expands Nanomaterials' line of custom manufactured nanoparticles which also includes inorganic and organic nanopowders.
These new nanoparticles can be manufactured as single- or multi-domain, with naked or coated surfaces. The customer may specify the particle size between 2 and 100 nm and the size distribution in the range of ~2 standard deviation units or greater. FIG. 1 provides an example of typical particle size data from iron nanopowder.
High resolution electron microscopy revealed that the lattice image extends to the particles' surface. Total oxygen content is below 0.1% and other impurity content is controlled to the customer's specification. Nanopowders are delivered under argon and available only to customers demonstrating a capability for handling pyrophoric materials.
>Particle size distribution for iron nanopowders
Particle size distribution for iron nanopowders
Alternatively, powders are available covered in an oxygen free organic solvent or as a suspension. Typical powder tapdensities are on the order of 0.1 g cm-3. (or about 1/20th to 1/10th the bulk density). The dry powders are inherently unstable in that we have witnessed increases in the tap density by a factor of 2 after 30 days.
Source: Nanomaterials Company (press release)
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