Micro pop-in issues in nanoindentation behaviour of 10 ZTA ceramics
| Autor: | Anoop Kumar Mukhopadhyay, Manjima Bhattacharya, Jiten Ghosh, Ammar Eqbal, Pradip Sekhar Das, Payel Maiti |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Zirconia Toughened Alumina Process Chemistry and Technology 02 engineering and technology Nanoindentation 021001 nanoscience & nanotechnology 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Shear (geology) Explicit analysis visual_art 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Shear stress Nanoindenter Ceramic Composite material 0210 nano-technology Nanoscopic scale |
| Zdroj: | Ceramics International. 45:8204-8215 |
| ISSN: | 0272-8842 |
| Popis: | Here we report for the very first time, the detailed mechanisms of the formation of ‘micro pop-in’ events observed during nanoindentation at 10–1000 mN load in a 10 ZTA (i.e., 10 vol% zirconia toughened alumina) ceramic. Explicit analysis of the experimental results backed up by comprehensive Field Emission Scanning Electron Microscopy (FESEM) based evidences suggests that the maximum shear stress (τmax) generated underneath the nanoindenter, the formations of shear bands and localized microcrackings play significant role in the initiation of nanoscale plastic events in the present ZTA ceramic. |
| Databáze: | OpenAIRE |
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