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Formation, densification, and selected mechanical properties of hot pressed Al4SiC4, Al4SiC4 with 30 vol.% WC, and Al4SiC4 with 30 vol.% TiC |
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| Authors: | Osama Gaballa Bruce CookAlan Russell |
| Affiliation: | a Department of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA b Ames Laboratory Division of Materials Science and Engineering, Iowa State University, Ames, IA 50011, USA c Central Metallurgical Research and Development Institute, Helwan, Cairo, Egypt |
| Abstract: | Powders of Al4C3 and SiC were combined by high-energy milling to produce Al4SiC4, Al4SiC4 + 30 vol.% TiC, and Al4SiC4 + 30 vol.% WC. Five different temperatures were used to hot press the constituents. XRD, SEM, relative density, and hardness measurements showed that formation of single-phase Al4SiC4 occurred at 1450 °C and full densification (99%) was achieved at 1500 °C. Both of these temperatures are lower than previously reported. Adding TiC and WC increases hardness, while WC improves densification (99.5%). |
| Keywords: | A. Hot pressing D. Carbides Aluminum silicon carbide Densification |
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