Fabrication of bulk AlN–TiN nanocomposite by reactive ball milling and underwater shock consolidation technique
| Autor: | Ryuichi Tomoshige, Naoyuki Wada, H. Amini Mashhadi, Palavesamuthu Manikandan, Kazuyuki Hokamoto |
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| Rok vydání: | 2011 |
| Předmět: |
Nanocomposite
Materials science Process Chemistry and Technology Metallurgy chemistry.chemical_element Nitride Ceramic matrix composite Microstructure Titanium nitride Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Materials Chemistry Ceramics and Composites Crystallite Composite material Tin Ball mill |
| Zdroj: | Ceramics International. 37:1747-1754 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2011.01.036 |
| Popis: | Reactive milling of aluminum nitride and titanium powders corresponding to the stoichiometric reaction Ti + AlN resulted in the formation of the ceramic matrix composite AlN–TiN. Prolongation of the milling process led to a microstructure with nanosize range of crystallites of both AlN and TiN, evidenced through XRD measurements, SEM and TEM observation. Further, underwater shock compaction with a pressure level of about 10 GPa was applied to the nanocomposite powders to obtain bulk nanostructured sample. The effect of this shock compaction on the prolonged milled powder resulted in a 22% reduction in crystallite size. The average microhardness of the consolidated nanocomposite was 656 HV and 840 HV for 40 h and 100 h MA samples, respectively, with densities 98% of theoretical values in both cases as well as no change in chemical composition. |
| Databáze: | OpenAIRE |
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