It is widely used in sapphire growth and sapphire ingot making,especially for LED market.
For gamma and alpha phase powder type ,the products feature with high purity and excellence fluidity.
For balls type,it features with high purity and rigidity,balls are in high density,they are sintered like pearls.
All the grades can be produce by customers' specific requirements.
|
Grade
|
Purity
≥%
|
Size Average
|
Loose Density
(g/cm3)
|
Surface Area
(m2/g)
|
Impurities:(ppm≤)
|
|||||||
|
Na
|
K
|
Si
|
Fe
|
Ti
|
Ca
|
Cu
|
Mg
|
|||||
|
4N5A
|
99.995
|
35~45(μm )
|
0.75~0.87
|
2~13
|
3
|
2
|
10
|
3
|
1
|
3
|
2
|
1
|
|
4N5A-CB31
|
99.995
|
1~6 (mm)
|
2.5~3.4
|
≤0.8
|
3
|
1
|
10
|
2
|
1
|
4
|
1
|
1
|
|
Physical properties:
|
4N5G
|
Chemical properties:
|
||||||||||||||
|
Item:
|
Standard
|
Item:
|
Standard
|
|||||||||||||
|
Type:
|
γ-Al2O3
|
Purity of Al2O3
(%) ≥
|
99.995%
|
|||||||||||||
|
Surface area
(m2/g)
|
80~130
|
Impurities (ppm) ≤
|
||||||||||||||
|
Name
|
Na
|
Fe
|
Si
|
K
|
Ti
|
Ca
|
Cu
|
Mg
|
Zr
|
Cr
|
Ni
|
Zn
|
||||
|
Loose density (g/cm3)
|
0.62~0.75
|
Standard
|
3
|
3
|
10
|
2
|
1
|
3
|
3
|
1
|
2
|
2
|
2
|
1
|
||
|
Size average
(μm )
|
35~45
|
Specification can be made by customer’s requirements
|
||||||||||||||