时间分辨率吸收光谱在电子束化中使用蓝色垂直腔表面发射激光器
Optics express
|June 29, 2023
概括
研究人员使用可调节二极管激光吸收光谱 (TDLAS) 来研究Ti-6Al-4V.在电子束化 (EBM) 过程中的气蒸汽动态. 这种新的技术为增材制造工艺提供了时间解析温度计.
科学领域:
- 增材制造 增材制造 增材制造
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
背景情况:
- 电子束化 (EBM) 是一种关键的增材制造技术.
- 了解EBM中的金属蒸汽动态对于过程控制至关重要.
- 对于EBM环境而言,存在有限的无接触,时间解析的传感方法.
研究的目的:
- 为了研究EBM化池中部分蒸发金属的动态.
- 应用可调节二极管激光吸收光谱 (TDLAS) 进行时间解析测量.
- 在Ti-6Al-4V合金的EBM过程中描述蒸汽的行为.
主要方法:
- 使用可调节二极管激光吸收光谱 (TDLAS).
- 使用蓝色化 (GaN) 垂直腔表面发射激光器 (VCSEL) 用于光谱学.
- 在20kHz的采样速率进行测量.
主要成果:
- 观察到一个大致对称的金属蒸气羽毛.
- 确定了羽毛之内均的温度分布.
- 实现了小合金元素 () 的时间分辨率温度测量.
结论:
- 对于EBM流程的现场监控,TDLAS是有效的.
- 该研究首次使用蓝色GaN VCSEL用于EBM的光谱学.
- 这项工作建立了EBM中合金元素的时间解析温度计的TDLAS.
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