White fused aluminum oxide 15-20um for wet sandblasting of silicon wafer

White fused aluminum oxide 15-20um for wet sandblasting of silicon wafer

White fused aluminum oxide 15-20um for wet sandblasting of silicon wafer

After slicing silicon wafer, sandblasting treatment can remove the oxide layer and improve the flatness. The commonly used sandblasting method is wet micro-sandblasting. The blasting  media for this application is white fused aluminum oxide 15-20um powder. 

White fused aluminum oxide powder is finely processed from fused alumina, with uniform particle size and high grinding efficiency. At the same time, WFA 15-20um powder is dried through overflow precipitation. Thus, it has good fluidity without agglomeration or clump.

 

CHEMICAL COMPOSITION of white fused aluminum oxide 15-20um:

ItemGuarantee Value(%)Typical Value(%)
Al2O3≥99.299.55
Fe2O3≤0.040.02
SiO2≤0.200.11
Na2O≤0.300.22
MgO≤0.050.04
CaO≤0.050.03
K2O≤0.050.04

 

PHYSICAL PROPERTIES:

Specific WeighHardnessPH ValueMelting Point
3.95 g/ cm39.0Mohs scale7-9.52050℃

 

PARTICLE SIZE DISTRIBUTION (Laser Analyzer LS609) :

SizeWhite fused aluminum oxide 800 meshWhite fused aluminum oxide 1000 mesh
D10≥10 um≥8 um
D5018-21 um14-17 um
D90≤33 um≤28 um

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