激光技术2018，Vol.42Issue(4)：446-450,5.DOI:10.7510/jgjs.issn.1001-3806.2018.04.003
毫秒激光致固体靶材熔融喷溅的比较实验研究
Comparative experimental resear ch of molten liquid ejection from soild targets induced by millsecond pulse laser
摘要
Abstract
In order to study molten liquid ejection mechanism induced by interaction between millisecond laser and silicon targets,based on the so-called shadow method,the process of molten liquid ejection was studied after the sequence shading pictures of the interaction between the millisecond laser and the solid targets(silicon and aluminum)were recorded by high speed CCD.The difference between melting and splashing process of silicon and aluminum targets caused by millisecond laser was compared.The mechanism of solid melting splashing formed by millisecond laser was also discussed.According to the different melting and splashing mechanism of the two targets,the reasons of splashing angle,splash distribution and splash brightness of two targets were explained.The results show that,millisecond laser can produce gasification and melting spatter process for both targets,but gasification intensity,shape and brightness of the melted splash are different.When interacting with silicon target,s the gasification phenomenon is not obvious in the action area.The molten splash is liquid drop.Its brightness is stronger than the background.The maximum angle between the splashing direction and the normal line of the front target surface is 45°,and the molten spatter is distributed within the angle.When interacting with aluminum target,s gasification phenomenon is more obvious in the action area.The molten splash is linear opaque fluid.Its brightness is lower than the background light.The angle between the splashing direction and the normal line of the front target surface is 20°.The molten spatter is distributed along the line of splashing direction.The study is helpful for laser processing technology.关键词
激光物理/熔融喷溅/阴影法/气化/毫秒激光Key words
laser physics/molten liquid ejection/shadow methods/gasification/millsecond laser分类
数理科学引用本文复制引用
张梁,倪晓武,陆健..毫秒激光致固体靶材熔融喷溅的比较实验研究[J].激光技术,2018,42(4):446-450,5.基金项目
中央高校基本科研业务费专项资金资助项目(30920130123001) （30920130123001）
