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Alpha Silicon Nitride powder
Manufactured in Japan by DENKA (DENKI KAGAKU KOGYO K.K.)
Grades are available from coarse powder to super fine powder with average particle size sub-micron.
Table. Main Powder Characteristics
| Items/Grade |
SN-7 |
SN-9S |
NP-200 |
NP-600 |
| alpha - Phase Content (%) |
73 |
92 |
92 |
88 |
| Average Particle Size* (µm) |
4.3 |
1.1 |
0.7 |
0.7 |
| Specific Surface Area** (m2/g) |
5 |
7 |
11 |
13 |
| Fe (µg/g) |
2,000 |
2,000 |
500 |
130 |
| Al (µg/g) |
2,000 |
1,000 |
700 |
800 |
| Ca (µg/g) |
2,000 |
2,000 |
200 |
60 |
| C (%) |
0.3 |
0.2 |
0.2 |
0.2 |
| O (%) |
1.5 |
1.7 |
1.6 |
1.2 |
| Specific Gravity |
3.18 |
| Thermal Stability |
Sublimates at about 1,900°C |
| External Appearance |
Gray or Light gray Powder |
Values in the table are representative values and not standard values.
*Average Particle Size:
Measured data by LASER diffraction, dispersion method (MicroTrak)
**Specific Surface Area:
Measured data by B.E.T. method
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