Specification of PWA for lapping silicon wafer
PWA=Platelet White Alumina
Zhengzhou Haixu Abrasives Co.,ltd was founded in 1999.
From 2018,we started to produced platelet white alumina including size PWA40 PWA35 PWA25 PWA20 PWA15 PWA12 PWA9 PWA5 PWA3.
The specification of PWA for lapping silicon wafer is as follows:
PSD(Particle Size Distribution)
| Size | dv-0 | dv-3 | dv-50 | dv-94 |
| MCA15 | <25.2 | 14.8-17.2 | 9.4-11 | 5.8-6.8 |
| MCA12 | <20.3 | 11.8-13.8 | 7.6-8.8 | 4.5-5.3 |
| MCA09 | <16.3 | 8.9-10.5 | 5.9-6.9 | 3.3-3.9 |
Chemical Composition
| AL2O3 | SiO2 | Fe2O3 | Na2O |
| >99.0 | <0.2 | <0.1 | <1 |
