CAJ | 학술논문

为了研究并分析纳秒脉冲激光去除金属表面漆膜的机理，采用1064nm的纳秒激光对涂有漆膜的铝板样品进行了单脉冲辐照实验。依据热传导理论分别模拟出作用过程中漆膜以及铝板表层的温度分布，计算出漆膜与铝板界面处由于铝板基底热膨胀而产生的分离力，并分析了等离子体冲击波对去除漆膜的影响。结果表明，纳秒激光去除漆膜时力的作用为主导，其中热膨胀产生的分离力为漆膜的去除提供必要条件，漆膜对激光等离子体的约束最终导致其自身断裂和剥落。采用热力学理论对纳秒激光去除金属表面漆膜机理进行分析是可行的。
위료연구병분석납초맥충격광거제금속표면칠막적궤리，채용1064nm적납초격광대도유칠막적려판양품진행료단맥충복조실험。의거열전도이론분별모의출작용과정중칠막이급려판표층적온도분포，계산출칠막여려판계면처유우려판기저열팽창이산생적분리력，병분석료등리자체충격파대거제칠막적영향。결과표명，납초격광거제칠막시력적작용위주도，기중열팽창산생적분리력위칠막적거제제공필요조건，칠막대격광등리자체적약속최종도치기자신단렬화박락。채용열역학이론대납초격광거제금속표면칠막궤리진행분석시가행적。
In order to study the laser stripping mechanism , paint film stripping from aluminum plate surface experiments were demonstrated using the radiation of 1064nm nanosecond pulse laser .According to thermal conductivity theory, the temperature distribution of the film and the aluminum surface under laser irradiation were simulated .The separating force generated by the aluminum plate at the interface due to thermal expansion was calculated .The formation of the plasma shock wave on the removal of the paint film was also analyzed .The result shows that the effect of force is the key factor for nanosecond laser removal of the film , separation force due to thermal expansion provides necessary condition for the removal of the film , and the constraint of the film on the laser plasma eventually leads to its own cracking and spalling . A conclusion was made that thermodynamic theory can be used for analysis of removal mechanism of metal surface coating with nanosecond laser .