湿热海洋环境下锗基底增透膜透过率稳定性影响  

Germanium-Based Infrared Thin Film Transmittance Stability Under Tropical Marine Environment

作　　者：王乔方 王冲文[1,3,4] 叶洪伟 刘剑 杨玉萍 赵远荣 WANG Qiaofang;WANG Chongwen;YE Hongwei;LIU Jian;YANG Yuping;ZHAO Yuanrong(State Owned Factory 298,Kunming 650114,China;Kunming Institute of Physics,Kunming 650223,China;Xishuangbanna in Yunnan Province Materials Corrosion in Atmospheric Environment National Observation and Research Station,Kunming 650114,China;Xishuangbanna Materials Corrosion in Atmospheric Environment Observation and Research Station on Yunnan Province,Kunming 650114,China;The Second Military Representative Office in Kunming of the Armament Department in Chongqing,Kunming 650032,China)

机构地区：[1]国营第二九八厂,云南昆明650114 [2]昆明物理研究所,云南昆明650223 [3]云南西双版纳大气环境材料腐蚀国家野外科学观测研究站,云南昆明650114 [4]西双版纳大气环境材料腐蚀云南省野外科学观测研究站,云南昆明650114 [5]陆军装备部驻重庆地区军事代表局驻昆明地区第二军事代表室,云南昆明650032

出　　处：《红外技术》2025年第4期530-537,共8页Infrared Technology

基　　金：国防科技工业技术基础科研项目(JSHS2020208C001)。

摘　　要：为研究锗基底红外增透膜在湿热海洋自然环境下的透过率稳定性,将锗基底双面镀高效减反射膜玻璃样品投放于湿热海洋环境中进行棚下自然暴露试验,以6个月为一个试验周期,共试验4个周期,并对各个周期试验样品进行微观形貌观察和透射光谱检测。首先,利用光谱拟合法计算出各薄膜材料的光学常数及厚度,通过理论计算模型验证,得到透过率理论计算值;其次,根据理论光谱透过率及测试光谱透过率曲线计算拟合值与实测值的误差,得到不同试验周期的水吸收;最后,深入分析吸水量与透过率变化关系,以及由于吸水引起的膜层损伤现象。研究结果表明,随着试验周期变长,膜层吸水量逐渐增加,折射率变大,膜层透过率波峰向长波方向移动,试验4个周期后,透过率明显降低;与此同时,由于膜层边缘位置吸水量高于内部区域,致使边缘腐蚀损伤程度更大,严重影响红外增透膜透过率稳定性。To study the transmittance stability of germanium-based infrared films in tropical marine environments,two samples:germanium-based double-sided DLC film and germanium-based double-sided high-efficiency antireflective film,were placed in a tropical marine environment for a natural exposure test under a shed,with a test cycle of six months and a total of four cycles.The transmission spectrum and microscopic morphology of the test samples from each cycle were analyzed.The variation pattern of the samples over time was examined through transmission spectroscopy results,and the stability and change mechanism of the infrared thin film transmittance were studied through microstructural analysis of the film layer.The test results show that the transmittance of germanium-based infrared films does not change significantly during one testing period under the shed.The overall waveform of the film remains unchanged with increasing test time,although the crest shifts toward longer wavelengths.After four test cycles,the transmittance of the high-efficiency antireflective coating was significantly reduced,whereas the transmittance of the DLC membrane did not decrease significantly,indicating good stability in a tropical marine environment.

关 键 词：湿热海洋环境 红外薄膜 透过率稳定性 

分 类 号：TJ03[兵器科学与技术—兵器发射理论与技术]