陶瓷抗激光涂层对钛合金焊缝及凹槽区域的防护效果研究  

The damage effect of weld seam and groove area of titanium alloy with ceramic laser resistant coating

作　　者：朱洁旻 赵懿 杨振[2] 程功[3] 罗楚养 ZHU Jiemin;ZHAO Yi;YANG Zhen;CHENG Gong;LUO Chuyang(Center for Civil Aviation Composites, Donghua University, Shanghai 201620, China;School of Astronautics, Harbin Institute of Technology, Harbin 150001, China;China Airborne Missile Academy, Luoyang 471009, China)

机构地区：[1]东华大学民用航空复合材料协同创新中心,上海201620 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150001 [3]中国空空导弹研究院,河南洛阳471009

出　　处：《西北工业大学学报》2021年第6期1281-1288,共8页Journal of Northwestern Polytechnical University

基　　金：航空科学基金(20180112008);青年人才托举工程(2016QNRC001);东华大学青年教师科研启动基金;上海市科技创新行动计划(19DZ1100300)资助。

摘　　要：为探究焊缝区域以及凹槽结构对钛合金基材激光毁伤效果以及陶瓷涂层抗激光效果的影响,采用对比实验法研究了钛合金表面存在和不存在陶瓷抗激光涂层2种情况下,连续激光对钛合金焊缝区域以及凹槽区域的毁伤效果,结果表明,陶瓷涂层能够有效减轻钛合金基底的激光毁伤效果。焊缝区域陶瓷涂层抗激光性能减弱,但仍能进行有效抗激光防护。凹槽结构的棱部、角部的激光毁伤效果随激光功率密度的增加而加重,在相同激光功率密度条件下,凹槽结构内部毁伤效果明显较外部毁伤效果小,角部结构毁伤效果较棱部结构小。高反射型陶瓷涂层在反射部分激光能量后,会吸收大量由激光辐照产生的热能,发生烧结作用导致内部结构变化,从而对钛合金基底起到保护作用。In order to explore the effect of weld area and groove structure on the damage effect of laser irradiation on titanium alloy and ceramic coating,the experiment of continuous laser irradiation on welding seam and groove area of titanium alloy was studied,while the surfaces of the specimens were coated with or without anti-laser ceramic material.The following conclusions were obtained:the ceramic coating can protect the titanium alloy substrate from the damage of high power laser effectively;the laser resistance of ceramic coating on the welding seam area is weakened,but it still protects the titanium alloy effectively;the damage of laser on the edge and the corner structure of titanium alloy with groove structure is aggravated with the increasing of laser power density,and under the same laser density,the damage inside the groove is less than that outside,while that of corner is less than edge.Micromorphology results show that the ceramic coating undergoes a series of physical and chemical changes and phase transformation to absorb a large amount of thermal energy converted from luminous energy,which has a protective effect on the titanium alloy.

关 键 词：激光毁伤 陶瓷涂层 焊缝区域 凹槽结构 钛合金 

分 类 号：TN249[电子电信—物理电子学]