Proceedings of the
9th International Conference of Asian Society for Precision Engineering and Nanotechnology (ASPEN2022)
15 – 18 November 2022, Singapore
doi:10.3850/978-981-18-6021-8_OR-12-0108
Improving the Machinability of Brittle Materials by Ion Implantation
1State Key Laboratory of Precision Measuring Technology and Instruments, Laboratory of Micro/Nano Manufacturing Technology (MNMT), Tianjin University, Tianjin, 300072, China
2Centre of Micro/Nano Manufacturing Technology (MNMT-Dublin), University College Dublin, Dublin 4, Ireland
ABSTRACT
Brittle materials find extensive applications in modern optical systems and precision engineering. Compared with traditional machining methods such as grinding and polishing, ultra-precision diamond cutting has the advantages of large efficiency and generating complex surfaces. However, the fracture damage and tool wear are critical issues that seriously influence the surface integrity. This paper presents a method improving the machinability of brittle materials via ion implantation, which can enhance the ductility and reduce the mechanical strength of the workpiece. The principle is introduced at first, then, the effect of surface modification on the material removal process during nanometric cutting is investigated by molecular dynamics simulation. Finally, several experimental examples on both single crystals and ceramics are provided to demonstrate the capability of the proposed method.
Keywords: Diamond cutting, Brittle materials, Ion implantation, Surface modification
1State Key Laboratory of Precision Measuring Technology and Instruments, Laboratory of Micro/Nano Manufacturing Technology (MNMT), Tianjin University, Tianjin, 300072, China
2Centre of Micro/Nano Manufacturing Technology (MNMT-Dublin), University College Dublin, Dublin 4, Ireland
ABSTRACT
Brittle materials find extensive applications in modern optical systems and precision engineering. Compared with traditional machining methods such as grinding and polishing, ultra-precision diamond cutting has the advantages of large efficiency and generating complex surfaces. However, the fracture damage and tool wear are critical issues that seriously influence the surface integrity. This paper presents a method improving the machinability of brittle materials via ion implantation, which can enhance the ductility and reduce the mechanical strength of the workpiece. The principle is introduced at first, then, the effect of surface modification on the material removal process during nanometric cutting is investigated by molecular dynamics simulation. Finally, several experimental examples on both single crystals and ceramics are provided to demonstrate the capability of the proposed method.
Keywords: Diamond cutting, Brittle materials, Ion implantation, Surface modification
