中国激光, 2014, 41 (12): 1203002, 网络出版: 2014-10-08
355 nm紫外激光抛光Al2O3陶瓷作用机理的实验研究
Experimental Study on Mechanism of 355 nm Ultraviolet Laser Polishing of Al2O3 Ceramics
激光技术 加工机理 紫外激光抛光 Al2O3陶瓷 白色粉末 laser technique processing mechanism UV laser polishing Al2O3 ceramic white powder
摘要
陶瓷材料的性能优越,但是表面质量差,采用短波长激光抛光技术可以有效提高陶瓷材料表面质量。针对紫外激光抛光Al2O3陶瓷过程中可能存在的熔化、汽化、微裂纹、材料的熔融飞溅和光化学作用等不同的作用形式进行了实验研究。通过对抛光后表面形貌特征进行观测,研究了紫外激光抛光Al2O3陶瓷的作用机理,并分析了高能量密度下产生的白色粉末的形貌、附着力、组成成分和主要物相,进一步确定了紫外激光抛光Al2O3陶瓷的作用机制。
Abstract
Ceramic materials have excellent properties, but their surface qualities are poor. The surface quality of ceramic materials can be effectively improved using short-wavelength laser polishing technique. Experiments are conducted according to existing different forms, such as melting, vaporization, micro-cracks, splashes of molten material and photochemical effects etc, while ultraviolet (UV) laser is polishing Al2O3 ceramics. Through observing polished surface morphology, the mechanism of UV laser polishing Al2O3 ceramic is studied, and the morphology, adhesive force, elementary composition and main crystalline phase of white powder in high energy density are analyzed. The mechanism of UV laser polishing Al2O3 ceramics is further confirmed.
华显刚, 魏昕, 周敏, 谢小柱. 355 nm紫外激光抛光Al2O3陶瓷作用机理的实验研究[J]. 中国激光, 2014, 41(12): 1203002. Hua Xiangang, Wei Xin, Zhou Min, Xie Xiaozhu. Experimental Study on Mechanism of 355 nm Ultraviolet Laser Polishing of Al2O3 Ceramics[J]. Chinese Journal of Lasers, 2014, 41(12): 1203002.