| Sapphire Polishing Slurry |
| Sapphire is a crystalloid which is made from Alumina(AI203) over a temperature of 2050℃, used in semiconductor circuit boards and equipments related to semiconductor, optical equipment because light penetrability is excellent than any other material, thermal conduction is similar to metal, high stability regardless of temperature, outstanding mechanical property by the hardeness(Mohs 9). The demand for sapphire wafer as a material for LED circuit board used in TV and lighting has been increased rapidly from the situation that LED TV and LED lighting market is growing. |
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| Model name : ecosil®4080, ecosil®100S, ecosil®100A, ecosil®200L |
| “ecosil” slurries are the high-purity Colloidal Silica which is used for polishing sapphire, LiTaO3/LiNbO3, ceramic and several metals. The products show excellent performance by maximizing intensity of illumination of wafer through the process to erase scratches and grinded trace. |
| Material property |
| Item |
Standard |
Test method |
| ecosil®4080 |
ecosil®100S |
ecosil®100A |
ecosil®200L |
| Visual |
White |
White |
White |
White |
Visual inspection |
| Active ingredient (%) |
40.0 ± 1.0 |
37.0 ± 0.5 |
44.0 ± 0.5 |
49.0 ± 1.0 |
For 3hr at 100℃ |
| Viscosity (cps at 20℃) |
< 5 |
< 5 |
< 5 |
< 5 |
[Note 1] |
| Specific gravity (at 20℃) |
1.29-1.30 |
1.26-1.28 |
1.33-1.35 |
1.37-1.39 |
Hydrometer Fisher Scientific |
| pH (at 20℃) |
10.0 ± 0.5 |
9.8 ± 0.5 |
9.5 ± 0.5 |
9.2 ± 0.5 |
pH meter |
| shelf |
1 year |
1 year |
1 year |
1 year |
|
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| [Note 1]: Brookfiled Viscometer (DV-Ⅱ+Pro, Spindle No. 2, 20rpm) |
