Microfabrication of green ceramics: Contact vs. non-contact machining

• Published in: Journal of the European Ceramic Society Vol. 35; no. 14; pp. 3909 - 3916
• Main Authors: Dadhich, Prabhash, Srivas, Pavan Kumar, Mohanty, Saralasrita, Dhara, Santanu
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-11-2015
• Subjects: Green machining; Laser ablation; Micromachining; Milling; Surface roughness; Surface roughness; Laser ablation; Green machining; Micromachining; Milling
• ISSN: 0955-2219; 1873-619X
• DOI: 10.1016/j.jeurceramsoc.2015.06.025

Micromilling of ceramics is challenging due to its high hardness and low fracture toughness. Manufacturing of small components by non-contact micromachining of green ceramics could be a viable approach to overcome limitation associated with sintered state machining. In the present study, micromachining of green ceramics was carried out by contact (milling) and non-contact (laser ablation) methods and processibility was compared as well. Machining parameters such as machinability of micro-scale features, relative machining time and reproducibility were studied. Depth of machining, surface roughness, surface morphology, and changes in edge of machined features were analyzed.