Spherical alumina powder
Spherical alumina (NOVOPOWDER DA)
[Basic description]: Spherical alumina powder is a kind of alumina powder material with small specific surface area and good fluidity.
> Basic characteristics of spherical alumina powder:
|density||kg / m 3||3.7 × 10 3|
|Dielectric constant||/||9 (1MHz)|
|Dielectric loss||/||（1MHz） 3 × 10 -4 (1MHz)|
|Coefficient of linear expansion||1 / K||7 × 10 -6|
|Thermal conductivity||W / K · m||30|
> Spherical alumina powder can be differentiated based on the following characteristics and matched according to customer requirements:
|purity||O 3含量 Al 2 O 3 content||99.0% or more|
|Impurity||O Na 2 O||Can be as low as 300ppm|
|Crystal phase||O 3含量 -Al 2 O 3 content||Up to 90%|
|Particle size distribution||D50||D50 = 2-50µm optional|
|Particle size distribution||Can be adjusted based on typical distributions, including multimodal distributions, narrow distributions, etc., as required.|
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