Inorganic nanofibrous powders

NnF CERAM® – Al2O3

Product description

Aluminium trioxide nanofibrous powder is a novel kind of ceramic material produced by industrial production technology operated by Pardam, s.r.o. in the Czech Republic. Nanofibrous products are fully comprised of a ceramic basis of aluminium oxide with minor amounts of porous particles from the same material. Aluminium trioxide nanofibrous material is basically produced in gamma – glassy crystal phase modification, but the production setup can be simply modified to obtain other phases like alpha alumina. The properties and characteristics obtained by combinations of nanofibrous morphology and conventional properties of alumina material predestine Al2O3 nanofibers for applications in many commercial products.

Images


SEM image, magnification: 7000x | Al2O3-alfa
 
SEM image, magnification: 7800x | Al2O3-gamma

Physical properties

Crystal phase – α- alumina

 

Crystal phase – γ- alumina

Material characteristics

α- alumina (corundum) – trigonal

fiber structure polycrystalline nanofiber
typical fiber diameter 150-400 nm ±100
fiber length* 2 to hundreds of μm
specific surface area 25-30 m2/g
crystal phase alpha
typical size of crystallites N/A
physical form white fluffy powder

Hard and durable material | Good electrical insulator; electrical conductivity < 10-14Sm-1 | Relatively high thermal conductivity 30 Wm-1K-1 | Stable at high temperatures (melting point 2072 °C)

 

γ- alumina – cubi

fiber structure polycrystalline nanofibers
typical fiber diameter 150-400 nm ±100
fiber length* 2 to hundreds of μm
specific surface area 30-40 m2/g
crystal phase gamma
typical size of crystallites N/A
physical form white fluffy powder

Flexible material e.g. mineral wool | Good electrical insulator; electrical conductivity < 10-14Sm-1 | Relatively high thermal conductivity 30 Wm-1K-1 | Stable at high temperatures (melting point 2072 °C) | Catalyst, catalyst carrier

* Producer can modify the fiber length to different values in accordance to customers requests and application. Please feel free to contact us for more information.

Applications

α- alumina (corundum) – trigonal

Abrasive | Advanced ceramic material | electrical components – electrical insulator | Thermal conductor | nanocomposites

 

γ- alumina – cubic

Optical displays | Catalyst and catalyst carrier | Electrical components – electrical insulator | Thermal conductor | Nanocomposites | Separator | Separator material for batteries

 

 

NnF CERAM - Al2O3

NameDownloads