摘要
为研究飞秒激光烧蚀0Cr18Ni9不锈钢的特性,采用掺Nd:KGW的飞秒激光进行了0Cr18Ni9不锈钢烧蚀实验。分析了飞秒激光烧蚀0Cr18Ni9不锈钢的表面形貌与烧蚀区域发生的相关效应。实验与分析表明0Cr18Ni9不锈钢烧蚀阈值为0.45 J/cm2;随辐照脉冲数增加,烧蚀区域呈现光栅结构、微凸结构、乳突结构和凹陷结构、烧蚀孔形成的表面结构变化规律,并伴有热影响,且不锈钢烧蚀区表面发生氧化现象;烧蚀区形成的微观结构影响激光能量的进一步传输和沉积,烧蚀区出现局部深熔。
A doping Nd：KGW femtosecond laser is used to ablate 0Cr18Ni9 stainless steel, and its ablation characteristics are studied. The surface profile of the ablated stainless steel and the associated effect in the ablation area are detected. Studies indicate that the ablation threshold of 0Cr18Ni9 stainless steel is 0.45 J/cm^2; the ablation area successively appears grating structure, micro-convex structure, mastoid structure and concave structure, ablation hole along with the increase of the pulse number, and accompanied by heat affected zone,oxidation occurs at the ablation region; Microstructure in the ablation zone influences laser energy transfer and deposition further, local deep penetrating appears.
出处
《激光与光电子学进展》
CSCD
北大核心
2014年第7期68-73,共6页
Laser & Optoelectronics Progress
基金
国家863计划(2012AA040210)
中央财政支持地方高校专项资金(510-C10293)
广东省教育厅学科建设专项(CXZD1139)
