模拟空间服役环境下低温共烧陶瓷材料特性评价  

Characteristics Evaluation of Low-temperature Co-fired Ceramic Substrate in Simulated Space Service Environment

作　　者：徐美娟 王平[1] 李岩[2] 何端鹏 李姗泽 杨士成 刘旭 陈康 XU Meijuan;WANG Ping;LI Yan;HE Duanpeng;LI Shanze;YANG Shicheng;LIU Xu;CHEN Kang(China Academy of Space Technology(Xi'an),Xi'an 710100;China Academy of Space Technology,Beijing 100094;Xi'an Haizhong Electronic Technology Co.,LTD,Xi'an 710061)

机构地区：[1]中国空间技术研究院西安分院,西安710100 [2]中国空间技术研究院,北京100094 [3]西安海众电子科技有限公司,西安710061

出　　处：《宇航材料工艺》2023年第2期79-84,共6页Aerospace Materials & Technology

摘　　要：从航天器产品空间可靠性要求的角度出发,提出了低温共烧陶瓷(LTCC)材料在模拟空间服役环境下材料特性评价的方法,主要包括大温域、温度循环、辐照等试验的条件及试验后力/热性能及电性能评价方法,采用该方法对某国产LTCC材料进行了评价。结果表明,在大温域试验条件下,热导率从-65℃时的4.77 W/(m·K)下降到了175℃时的2.89 W/(m·K),弯曲强度从-65℃时的445 MPa下降到了0℃时的310MPa并稳定在了310 MPa左右,热膨胀系数虽随温度的升高而增大,但随温度的变化趋势与同类进口材料基本一致,而在温度循环及模拟空间环境辐照试验条件下,各考核项目均变化不大,表明其性能基本可以满足宇航应用的可靠性要求,该研究成果可为LTCC材料的宇航应用提供技术指导。From the perspective of space reliability requirements of spacecraft,a method for evaluating the material properties of low-temperature co-fired ceramic(LTCC)materials in a simulated space service environment was proposed in this paper,mainly including the conditions of large-temperature domain,temperature cycling,irradiation and the methods for evaluating the force/thermal and electrical properties after the tests.This method was carried out on a domestic LTCC material.The results show that the thermal conductivity decreases from 4.77 W(/m·K)at-65℃ to 2.89 W(/m·K)at 175℃,while the flexural strength decreases from 445 MPa at-65℃ to 310 MPa at 0℃ and stabilizes at about 310 MPa under the large-temperature test conditions.Although the coefficient of thermal expansion increases with the increase of temperature,the trend of change in temperature is basically consistent with similar imported materials.All the assessment items do not change significantly under the temperature cycling and simulated space environment irradiation test conditions,which indicates that the performance of the material can meet the reliability requirements of aerospace applications.According to the reserach results,technical guidance is provided for the aerospace application of LTCC substrate.

关 键 词：空间服役环境 LTCC材料 宇航应用 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]