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相关概念视频

Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

2.1K
An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
2.1K

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Updated: May 6, 2026

Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
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一个自动的多前体流式原子层沉积系统.

Daniel J Rodriguez1, Mai A Her2, Igor O Usov1

  • 1Engineered Materials Group (MST-7), Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545, USA.

The Review of scientific instruments
|November 18, 2024
PubMed
概括
此摘要是机器生成的。

两个自动化原子层沉积 (ALD) 反应堆被开发用于涂层增材制造的金属部件. 这些系统成功地将膜沉积在不钢上,证明了对先进材料应用的精确原子层控制.

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Last Updated: May 6, 2026

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科学领域:

  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.
  • 纳米技术纳米技术

背景情况:

  • 增材制造 (AM) 金属部件需要先进的表面涂层以提高性能.
  • 原子层沉积 (ALD) 可以精确控制薄膜沉积,这对于复杂的几何结构至关重要.

研究的目的:

  • 设计和展示两个自动ALD流反应器,用于涂覆AM金属印刷品.
  • 为了证明这些反应堆对均薄膜沉积的能力.

主要方法:

  • 开发两个不同的ALD反应堆设计:一个用于批处理,一个用于单个部分实验.
  • 使用定制LabVIEW软件进行自动控制和现场监测,通过石英晶体微平衡来控制温度,压力和薄膜厚度.
  • 在AM 316L不钢上沉积的 (Al2O3) 薄膜使用三甲 (TMA) 和水 (H2O) 前体与 (N2) 净化气.

主要成果:

  • 在 Al2O3.3 的 150 个 ALD 循环后,达到约 55 nm 的薄膜厚度.
  • 验证了原子层层沉积的准确性,使用拉瑟福反射光谱学.
  • 在增材制造的不钢基板上展示了一致和合规的涂层.

结论:

  • 开发的自动ALD反应器能够精确地在AM金属部件上沉积薄膜.
  • 这些系统使得可靠的,现场监控的涂层过程具有原子层控制.
  • 这些反应器为增材制造组件的表面性能增强提供了宝贵的工具.