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Spherical alumina powder

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.

[Scope of application]:





> Basic characteristics of spherical alumina powder:

project unit Typical value
Exterior / White powder
Particle morphology / spherical
density kg / m 3 3.7 × 10 3
Moh's hardness / 6-9.0
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:

project Related indicators Description
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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