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相关概念视频

Metallic Solids02:37

Metallic Solids

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Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability....
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Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
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结构-功能集成分层CNT/Mg复合材料的制备.

Shiping Deng1, Linchi Zou1, Zengxiang Liao1

  • 1College of Materials Science and Engineering, Fujian University of Technology, 3 Xueyuan Road, University Town, Fuzhou 350118, China.

Materials (Basel, Switzerland)
|May 25, 2024
PubMed
概括

这项研究通过结合碳纳米管 (CNTs) 来增强 (Mg) -矩阵复合材料,以提高强度和性. 由此产生的CNT/Mg层表现出优越的机械和功能性质,适用于先进的应用.

科学领域:

  • 材料科学 材料科学 材料科学
  • 复合材料 复合材料 复合材料
  • 纳米技术纳米技术

背景情况:

  • (Mg) -矩阵复合材料提供了优良的和电磁屏蔽,但遭受了强度-性不匹配.
  • 这种局限性阻碍了它们在各种工程领域的广泛应用.

研究的目的:

  • 为了解决Mg矩阵复合材料的强度-度不平衡.
  • 为了保持理想的功能性质,同时提高机械性能.
  • 开发高性能,结构功能集成的基于Mg的材料.

主要方法:

  • 碳纳米管 (CNT) 均分散在Mg薄膜上,使用电泳沉积 (EPD).
  • 用火花等离子烧结 (SPS) 来进行整合.
  • 采用热变形来改进谷物结构并增强层间粘合.

主要成果:

  • 与纯相比,CNT/Mg层材的抗拉强度增加了6.4%,延伸度增加了108.4%.
  • 层状结构通过增加裂传播过程中的能量吸收,显著提高了性.
  • 最佳性能是在80%的总滚动屈曲率下实现的,其拉伸强度为241.70MPa,延长率为6.90%.

结论:

关键词:
-矩阵复合材料的复合材料缓冲性能 缓冲性能 缓冲性能电磁屏蔽的有效性 电磁屏蔽的有效性机械性能 机械性能 机械性能

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  • 开发的CNT/Mg层材克服了强度-度不匹配,提供了增强的机械性能.
  • 通过EPD,SPS和热的微结构修改对于优化复合材料性能至关重要.
  • 该研究提出了一种可行的方法,用于创建具有综合结构和功能特征的基于Mg的先进材料.