Study on effect of powder particle size on mechanical properties of molybdenum
shield
GONG Yanfei1，QU Binrui2，LIANG Yanming2，WANG Chengyang1，
DONG Di1，SUN Xiaoxia3
1Advanced Technology and Materials Co.，Ltd.，Beijing 100081，China；2China Academy of Launch
Vehicle Technology，Beijing 100076，China；3China University of Labor Relations，Beijing 100048，China
摘要通过对由不同费氏粒度的钼粉粉末制备的钼护板，在工作时间60 s 的固体火箭地面发动机试车试验
进行测试，通过对烧蚀结果的金相组织、力学性能测试、断口组织分析，获得了粉末粒度与钼护板力学性能的
相关性。结果表明：对于工作时间60 s 的固体火箭发动机中搭载使用的钼护板，随着原始粉末粒度的增大，抗
烧蚀效果相应提高，力学性能表现也越好。
Abstract：In this paper，the molybdenum shield made of different sizes of molybdenum powder was tested in 60 s
solid rocket ground motor test. The correlation between the powder size and the mechanical properties of molybdenum
shield was obtained through the metallographic structure，mechanical property test and fracture structure analysis
of ablation results. The results show that with the increase of the particle size of the original powder，the ablation
resistance and the mechanical properties of the Mo guard plate used in the SRM with 60 s working time are improved.
2021, Vol. 31 
