一种表面镀膜抗系统电磁脉冲加固技术研究

Research on a surface coating technology for SGEMP hardening

  • 摘要: 针对X射线产生的系统电磁脉冲效应,提出一种在系统或构件表面镀膜低原子序数材料SiO2或Al2O3,通过降低表面出射光电子效率,达到大幅度减小系统电磁脉冲效应的加固设计方法。本文采用数值计算和实验测量的方法对该加固技术的有效性进行了验证,针对X射线辐照引入的感应共模干扰,设计了对称差分光电流传感器,同时应用光纤传输技术解决了测量中的强干扰问题。研究结果表明:表面镀膜可有效降低材料表面出射光电子数,0.5 cm铝基材表面镀膜1 μm厚Al2O3材料后可降低光电流强度约32%。

     

    Abstract:
    Background SGEMP refers to the electromagnetic effect generated by the interaction between X-rays and systems. SGEMP act on electronic systems will cause equipment malfunction or damage.
    Purpose For the strong electromagnetic, proposed an approach low atomic mumber material coating the surface of the system or component for achieving significantly reduce SGEMP effets by reducing the mumber of photoelectrons emitted out of the surface. In this paper,
    Methods A symmetrical differentical potocurrent measurement system was designed for resisting common mode interference introduced by X-rays radiation, while applying optical transmission to solve the strong interference of measurments.
    Results The results showed that the coating could effectively reduce the mumber of emission photoelectron form surface, and reduced the photocurrent intensity about 32% when coating 1 μm Al2O3 on the surface of 0.5 cm auminum substrate.
    Conclusions The method proposed in this paper has been verified to effectively reduce the intensity of SGEMP.

     

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