摘要
薄膜应变计是航空发动机涡轮叶片应变测量的可靠选择。本文以FeCrAl合金为敏感材料,在镍基合金DD6上制备了多层薄膜材料体系的FeCrAl薄膜应变计,并测试了不同温度环境下应变计的应变性能。结果表明,20℃,200℃,400℃和600℃时的应变灵敏系数为2.41,2.68,3.16和3.70;200℃,400℃和600℃的电阻温度系数为567.5ppm/℃,534.1ppm/℃,517.3ppm/℃,电阻漂移率为0.00118h^(-1),0.00167h^(-1),0.00181h^(-1)。
Thin film strain gauge is a reliable choice for strain measurement of aeroengine turbine blades.The FeCrAl thin film strain gauge was prepared on nickel-based alloy DD6 with FeCrAl alloy as the sensitive material,and the strain performance of strain gauge was tested at different temperatures.The results show that the gauge factors at 20℃,200℃,400℃and 600℃are 2.41,2.68,3.16 and 3.70.The temperature coefficients of resistance at 200℃,400℃and 600℃are 567.5,534.1 and 517.3ppm/℃,and the drift rate is 0.00118h^(-1),0.00167h^(-1),0.00181h^(-1).
作者
陈长源
周世威
周枳仲
蒋书文
Chen Changyuan;Zhou Shiwei;Zhou Zhizhong;Jiang Shuwen*(State Key Laboratory of Electronic Thin Films and Integrated Devices,School of integrated Circuit Science and Engineering,University of Electronic Science and Technology of China,Chengdu Sichuan 611731)
出处
《中国仪器仪表》
2024年第11期69-73,共5页
China Instrumentation
基金
国家重点研发计划(2021YFB3801700)
航空科学基金(20200046080001)。
