轻金属氢化物表面纳米修饰层的精确构建及其构效关系
结题报告
批准号:
22005240
项目类别:
青年科学基金项目
资助金额:
24.0 万元
负责人:
秦利军
学科分类:
含能材料化学
结题年份:
2023
批准年份:
2020
项目状态:
已结题
项目参与者:
秦利军
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中文摘要
轻金属氢化物是提高固体推进剂能量性能理想的新型高能燃料。然而,轻金属氢化物空气稳定性差、与固体推进剂主要组分不相容等缺点易导致推进剂能量水平降低、贮存寿命缩短和感度增高,成为制约其在推进剂中应用的瓶颈问题。这些问题与轻金属氢化物的表面性质密切相关,对其表面化学组成和结构进行改造是提升材料稳定性和安全性的重要手段。本项目拟借助原子层沉积(ALD)这种前沿的表面工程技术手段,在轻金属氢化物表面精确构建纳米修饰层,并阐明其表面ALD纳米修饰层的形成机理以及影响因素;从原子/分子水平揭示轻金属氢化物表面组成、结构特性与其物理、化学性质及能量输出行为的构效关系;深入认识表面修饰轻金属氢化物与推进剂主要组分的相互作用规律,最终通过精确控制表面修饰层的组成和结构实现轻金属氢化物稳定性、安全性和能量密度的优化。本研究可为轻金属氢化物的贮存及在推进剂中的安全应用提供理论依据和技术支撑。
英文摘要
Light-metal hydrides have been identified as an idea novel high energy fuel for promoting the energy performance of solid propellants. However, a critical challenge associated with the application of light-metal hydrides is restricted by its poor air stability and incompatibility with the components of solid propellants, which leads to a significantly compromise in the energy level, safety concerns and the storage life of the propellants. These issues are closely related to the surface properties of the light-metal hydrides, proper surface modifications are vital for improving the safety and stability of light-metal hydrides. In the proposed research, as an advanced surface engineering technology, atomic layer deposition (ALD) will be employed to perform the surface modification, and interaction mechanism between the as-fabricated layers and light-metal hydrides surface will be elucidated. The structure-activity relationships between the surface compositions, structures, and morphologies of light-metal hydrides and their relevant physical, chemical and energy release properties will be revealed in atomic/molecular scale. The interactions between ALD modification light-metal hydrides and the components of solid propellants will be clarified. It is anticipated that the safety, stability and energy density of the light-metal hydrides can be optimized by precisely regulating the composition and structure of the surface fabrication layer. The results of this project would provide both theoretical and technical supports for storage and security application of light-metal hydrides in solid propellant.
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DOI:https://doi.org/10.1016/j.apsusc.2021.150207
发表时间:2021
期刊:Applied Surface Science
影响因子:--
作者:Li dan;Li jianguo;Qin lijun;Hu yiyun;Gong ting;Zhang wangle;Hui longfei;Feng Hao
通讯作者:Feng Hao
DOI:10.1016/j.apsusc.2022.155200
发表时间:2023
期刊:Applied Surface Science
影响因子:--
作者:Ting Gong;Lijun Qin;Yiyun Hu;Jianguo Li;Wangle Zhang;Longfei Hui;Hao Feng
通讯作者:Hao Feng
国内基金
海外基金