Abstract
The effect of nanosecond-pulsed laser milling on the surficial microstructure of Al2O3 ceramics is studied in this work. The macrostructure, microstructure, surface roughness, and milling depth of the ceramics are analyzed via scanning electron microscopy and confocal laser scanning microscopy. The results reveal that the surface roughness and the milling depth of Al2O3 ceramics increase with increasing laser power, laser repetition rate, and scanning times. After nanosecond-pulsed laser milling, cavities as well as molten and granular solidified structures are observed on the Al2O3 ceramic surface, which indicate that the main mechanism of nanolaser milling is the melting and gasification caused by the interaction between the laser and the material.
Funder
Jiangsu Province Advanced Manufacturing Technology Key Laboratory Open Fund
China Postdoctoral Science Foundation
Jiangsu Province Postdoctoral Science Foundation
Natural Science Research of the Jiangsu Higher Education Institutions of China
Changzhou Sci and Tech Program
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
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