Abstract
This study presents an assessment of the performance of four cutting tool in the machining of medium hardened HSS: polycrystalline c-BN (c-BNTiN), TiN coated polycrystalline c-BN (c-BNTiN), ceramic mixed alumina (Al 2O3TiC), and coated tungsten carbide (TiN coated over a multilayer coating (TiC/TiCN/Al2O3)). The Al 2O3TiC and the coated carbide tools can outperform both types of c-BN at high cutting speeds. Raman and SEM mapping revealed an alumina tribo-layer that protects the surface of the Al2O3TiC cutting tool. The high chemical and thermal stability of Al2O 3 tribo-films protects the tool substrate because it prevents the heat generated at the tool/chip interface from entering the tool core.
Original language | English |
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Pages (from-to) | 1174-1181 |
Number of pages | 8 |
Journal | Tribology International |
Volume | 44 |
Issue number | 10 |
DOIs | |
Publication status | Published - Sept 2011 |
Externally published | Yes |
Keywords
- Cutting tool materials
- Hard turning
- Tool wear
- Tribo-layer