White Plate-shape aluminum oxide

White Plate-shape aluminum oxide

First,what is white plate-shape aluminum oxide?

White Plate-shape aluminum oxide is white calcined aluminum oxide abrasive powder with plate-shape,which is also called white platelet aluminum oxide. the quality is similar to PWA from Japan Fujimi and WCA from USA Microgrit.

First.The main difference between white plate-shape aluminum oxide with othe aluminum oxide grinding powder

1.Plate-shape

2.High hardness

3.highly concetrated PSD(Particle Size Distribution)

Secondly.Characteristics of white plate-shape aluminum oxide

1.The shape is plate/flat ,that is flake,which increase the friction force,improve the grinding speed and work efficiency.Hence can decrease the quantity of machines and save labor and working time.For example,the efficiency of grinding the glass bulb of a picture tube. Improved by 3-5 times.

2.Because of the plate-shape, it is not easy to scratch the objects to be ground (such as semiconductor silicon wafers, etc.), and the qualified product rate can be increased by 10% to 15%. For example, the qualified product rate of semiconductor silicon wafers can generally reach 99% %.

3.Since the hardness is higher than ordinary aluminum oxide grinding/polishing powder,the consumption of same working will be smaller a lot,even can be lower 40-50%.

4.Compare with the similiar product from foreign countries,the quality is the similiar,but the cost is lower a lot, only about 60-70% of them.

Thirdly,main applications of white plate-shape aluminum oxide

1) Electronics industry: grinding and polishing of semiconductor single crystal silicon wafers, piezoelectric quartz crystals, and compound semiconductors (gallium arsenide, indium phosphide).
2) Glass industry: processing of hard glass and picture tube glass shells.
3) Coating industry: special coatings and fillers for plasma spraying.
4) Metal and ceramic processing industry.

CHEMICAL COMPOSTION%           

Al₂O₃                      ＞99.0%

SiO₂                        ＜0.2%

Fe2O3                      ＜0.1%

Na₂O                        ＜1%

PHYSICAL PROPERTIES

Mohs Hardness                            9.0

Specific Gravity                      ＞3.9g/cm³

PARTICLE SIZE DISTRIBUTION