直接增长的透明化中子屏蔽层的空间窗户的空间窗户
Dobin Kim1,2, Geunpil Kim3,4, Hwijoon Jeong5
1Extreme Materials Research Center, Korea Institute of Science and Technology (KIST), Seoul, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 3, 2026
概括
透明的六角化 (h-BN) 薄膜被开发用于太空中子屏蔽. 这种新型材料与先进的陶集成,提供高效的屏蔽,增强光学性能和空间应用的稳定性.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 太空技术 太空技术
背景情况:
- 立方化 (c-BN) 和六角化 (h-BN) 具有透明度和高10B密度,对于中子屏蔽至关重要.
- 之前的研究还没有探索c-BN和h-BN在太空中子屏蔽应用中的潜力.
- 制造透明的c-BN薄膜具有挑战性,并且厚的,均的h-BN薄膜的受控生长是有限的.
研究的目的:
- 探索化材料在太空中子屏蔽方面的潜力.
- 开发一种新的太空窗户设计,整合中子,防弹和玛射线屏蔽层.
- 为了实现具有可控性质的厚六角化 (h-BN) 薄膜的透明和稳定的生长.
主要方法:
- 开发一个空间窗户设计,采用基于h-BN的中子屏蔽层与先进的陶防弹和玛射线屏蔽层.
- 将碳 (C) 和氧 (O) 纳入h-BN,以创建sp2 - sp3混合的BN (HBN),减少与SiO2基质的折射率不匹配.
- HBN薄膜的化学蒸气沉积增长高达79.2微米厚度,具有精确的控制和高均性.
主要成果:
- 在550nm时实现了90.9%的传输,用于11.9微米厚的HBN薄膜.
- 能够使HBN稳定,透明地增长到79.2微米,并最大限度地减少热膨胀不匹配.
- 光学优化的HBN (B0.39N0.39C0.06O0.16) 通过丰富的c-BN形成 (63.4%) 证明了补偿密度,导致密度为3.01gcm-3.
- 在降低3%的厚度下,HBN实现了与h-BN同等的中子屏蔽效率.
结论:
- 开发的HBN材料和太空窗户设计显示出有效的太空中子屏蔽的重大前景.
- 整合HBN提供了一个稳定,透明和高效的解决方案,用于保护航天器和宇航员免受中子辐射的影响.
- 这项研究为在苛刻的太空环境中利用先进的化材料开辟了新的途径.
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