Osmium nanopowder: in stock
- Chemical purity: 99,996 wt%
- Particle size: 20-40 µm
- Particle size: 0.06 µm (on request)
Certificates, test reports, other documents and photographs of the batch are sent upon
request.
Osmium has a blue-gray tint and is the densest
stable element (22.587±0.009
g/cm3); it is approximately twice as dense as
lead and slightly denser than
iridium.
Osmium is a hard but brittle
metal that remains
lustrous even at high temperatures. It has a very low
compressibility. Correspondingly, its
bulk modulus is extremely high, reported between 395 and 462
GPa, which rivals that of
diamond (443 GPa). The hardness of osmium is moderately high at 4 GPa. Because of its
hardness, brittleness, low
vapor pressure (the lowest of the platinum-group metals), and very high
melting point (the
fourth highest of all elements, after carbon,
tungsten, and
rhenium), solid osmium is difficult to machine, form, or work.
Osmium forms compounds with
oxidation states ranging from −2 to +8. The most common oxidation states are +2, +3, +4, and +8.
The most common compound exhibiting the +8 oxidation state is
osmium tetroxide. This toxic compound is formed when powdered osmium is exposed to air. It is a very volatile, water-soluble, pale yellow, crystalline solid with a strong smell.
Application
- High hardness and exceptional refractoriness make it possible to use osmium as a coating in friction units.
- It is used as a catalyst for the synthesis of ammonia, hydrogenation of organic compounds, in catalysts for methanol fuel cells.
- The alloy "osram" (osmium with tungsten) was used to make the filaments of incandescent lamps.
- There is evidence of the use of osmium for military purposes, as part of artillery shells and missile warheads. It is also used in electronic equipment of aircraft and rocket technology.
- Osmium is a component of superhard and wear-resistant alloys with iridium and ruthenium.
- Osmium is used in the jewelry business.
- Osmium tetroxide is used in electron microscopy to fix biological objects.
- An alloy of platinum (90%) and osmium (10%) is used in surgical implants such as pacemakers and in the replacement of pulmonary valves.
- An alloy of osmium with aluminum has an unusually high ductility and can be stretched without breaking by 2 times.
If you are interested in this product,
send us your contacts, we will send you copies of certificates.