基于梳状电极的盐雾沉积率自动监测技术  

Automatic Monitoring Technology for Salt Spray Deposition Rate Based on Comb Shaped Electrodes

作　　者：岑远遥 贺琼瑶 吴遥 赵方超[1,2,3] 陈明亚 刘聪 周堃[1,2,3] 邓家卫 CEN Yuanyao;HE Qiongyao;WU Yao;ZHAO Fangchao;CHEN Mingya;LIU Cong;ZHOU Kun;DENG Jiawei(Equipment Environmental engineering Research Center,Southwest Institute of Technology and Engineering,Chongqing 400050,China;Environmental Effects and Protection of Chongqing Key Laboratory,Chongqing 400050,China;National Defense Science and Technology Industry Natural Environment Test and Research Center,Chongqing 400050,China;The Second Military Representative Office of the Army Equipment Department Stationed in Chongqing,Chongqing 400060,China)

机构地区：[1]西南技术工程研究所装备环境工程研究中心,重庆400050 [2]环境效应与防护重庆市重点实验室,重庆400050 [3]国防科技工业自然环境试验研究中心,重庆400050 [4]陆军装备部驻重庆地区第二军事代表室,重庆400060

出　　处：《装备环境工程》2024年第11期146-154,共9页Equipment Environmental Engineering

摘　　要：目的 针对装备服役过程中大气环境和具备微环境的盐雾沉积率自动监测开展研究,为装备服役过程提供腐蚀损伤研究提供全过程盐雾数据。方法 通过分析,确定利用湿烛法捕集大气盐雾,使用梳状电极作为传感器探头,采用交流阻抗法测量盐雾浓度变化后溶液阻抗值。结果 经过测试所设计的交流阻抗测量系统,误差最大小于5%。对不同浓度的盐雾溶液测量后,得到浓度与阻抗之间的关联模型,相关性为R^(2)=0.987 0。在25℃下,对不同浓度的溶液进行测量后,得到盐雾浓度测量的温度补偿模型。在某地开展了户外实时监测试验,监测时间为1周,测量的盐雾沉积率为0.04 mg/(100 cm^(2)·d),同时开展纱布挂片法进行对比实验,纱布挂片法测量的结果为0.025 mg/(100 cm^(2)·d)。结论 该技术可实现盐雾沉积率自动监测,监测数据可用于装备状态评估。The work aims to study the automatic monitoring of salt spray deposition rate in atmospheric environment and microenvironment during equipment service,providing full-process salt spray data for corrosion damage research during equipment service.Through analysis,the wet candle method was used to capture atmospheric salt spray.The comb shaped elec-trodes were used as sensor probes,and the impedance value of the solution after changes in salt spray concentration was meas-ured by the AC impedance method.After testing,the maximum error of the designed AC impedance measurement system was less than 5%.After measurement of salt spray solutions of different concentrations,a correlation model between concentration and impedance was obtained,with a correlation coefficient of R^(2)=0.9870.A temperature compensation model for salt spray concentration measurement was obtained aftermeasurement of solutions of different concentrations at 25℃.An outdoor real-time monitoring experiment was conducted at a certain location for one week,with a measured salt spray deposition rate of 0.04 mg/(100 cm^(2)·d).At the same time,a comparative experiment was conducted by the gauze hanging method,leading to a re-sult of 0.025 mg/(100 cm^(2)·d).This technology can achieve automatic monitoring of salt spray deposition rate,and the monitor-ing data can be used for evaluating equipment status.

关 键 词：盐雾沉积率 梳状电极 交流阻抗 盐雾浓度 实时测量 温度补偿 

分 类 号：TN721[电子电信—电路与系统]