对一种新型双翻斗型雨量传感器用口径圈过早发生腐蚀失效进行了全面、系统的分析.为找出其失效起因和失效机理,一系列表征分析手段用于该口径圈的材质检验及宏微观表面形貌分析.结果表明:材质本身存在的缺陷以及因加工引起的表面镀层不均匀是引发该新型口径圈过早腐蚀失效的主要原因.最后,针对上述结论对该失效提出了相应的解决建议. A new type of double-tipping bucket type rain sensor was used to conduct a comprehensive and systematic analysis of the failure of premature corrosion of the caliber ring.In order to find out its cause of failure and failure mechanism, a series of characterization and analysis methods were used for material inspection and macro The results show that the defects of the material itself and the non-uniformity of the surface coating caused by the processing are the main reasons that lead to the premature corrosion failure of the new caliber ring.Finally, according to the above conclusions, the corresponding solutions are proposed Suggest.