Abstract
β-Sialons (Si6-zAlzOzN8-z) of z values ranging between 1 and 4 were tried for combustion synthesis using mechanically activated powders of Si, Al and Al2O3 with desired mixing ratio in a pressurized nitrogen atmosphere of 1 MPa. The starting materials were milled to 18 min using a planetary ball mill for mechanical activation (MA). Unsuccessful propagations of z values 1 and 2 were explained in terms of amount of Al present in the raw material. Waste Si, of 94.8 mass% in purity, obtained from semiconductor industry was also introduced as a raw material to replace commercially available Si for the combustion synthesis.
Original language | English |
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Pages (from-to) | 236-240 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 441 |
Issue number | 1-2 |
DOIs | |
Publication status | Published - 2007 Aug 30 |
Externally published | Yes |
Keywords
- Ceramics
- Gas-solid reaction
- SEM
- X-ray diffraction
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry