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Platelet Alumina Powder

作者:ihpa.net 发布时间:2017-10-13

Platelet Alumina Powder -------CA Abrasive
(same to Fujimi's PWA and Microgrit's WCA) CA is white platelet calcined alumina powder. It is used for lapping high grade optical glass, silicon semiconductor wafer, crystal, piezoelectricity quartz crystal, stainless steel, etc.

CA (Platelet Calcined Alumina Micro-powder) applies special production technology, which enables CA to have a equal particle size. CA's crystal shape is platelet, different from equivalent shape or ball shop of traditional abrasives. With this platelet shape CA particles move parallel to the workpiece surface during the grinding or polishing course, thus gliding lapping effect was created, different from rolling lapping effect of traditional abrasives. So the particles will not scratch the workpiece surface. At the same time, because the lapping press distributes equally on the surface of the platelet particles, the number of crashed particles will be less, particles'endurance of lapping will be increased greatly, and so can provide best grinding & polishing effect and surface glaze. Experiments prove that CA abrasives will lessen down grinding and lapping times at least 10-20%, and can achieve fast grinding and polishing. When customers use CA, the amount just need to be 50% or more as much as traditional abrasives.

 
CA Chemical Analysis (%)
Chemicals (%) Typical Content (%) Specification (%)
Al2O3 99.36 99.2
SiO2 0.027 0.05
Na2O 0.35 0.55
Fe2O3 0.03 0.08
CA Available Sizes (JIS Standards)
Particle Distribution
Grade Average Micron Size
(Coulter Counter Test Method)
CA3 3.1
CA5 4.7
CA9 6.5
CA12 8.0
CA15 10.5
CA20 14.5
CA25 17.5
CA30 20.5
CA35 24.5
CA40 30.5
CA50 38.0

silicon powderMagnetic liquidBoron Nitride powderhafnium boride powderAluminum Diboride powder

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