在使用各种检测器的传统实验室断层扫描装置上,通过衍射对比断层扫描实现了粒度映射
Haixing Fang1,2,3, Wolfgang Ludwig2,3, Pierre Lhuissier1
1Université Grenoble Alpes, Grenoble INP, CNRS SIMaP, 1130 Rue de la Piscine, 38402 Saint Martin d'Hères, France.
概括
基于实验室的衍射对比断层扫描 (LabDCT) 可使用实验室X射线进行3D粒度映射. 本研究详细介绍了其实施情况,显示了与同步仪方法可比的结果,采用更短的获取时间.
科学领域:
- 材料科学 材料科学 材料科学
- 晶体学 晶体学是指结晶学.
- 射线成像X射线成像X射线成像
背景情况:
- 基于实验室的衍射对比断层扫描 (LabDCT) 提供3D微观粒度分析.
- 同步机访问限制阻碍了广泛采用.
- 传统的X射线断层扫描装置广泛可用.
研究的目的:
- 详细介绍LabDCT在传统实验室X射线断层扫描装置上的实施情况.
- 评估LabDCT的可行性和性能,使用常见的探测器 (CCD和平面板).
- 建立LabDCT作为一种可行的替代方案,以同步仪为基础的方法用于谷物映射.
主要方法:
- 在实验室X射线断层扫描系统上实施LabDCT.
- 在AlCu合金样本上使用CCD和平板探测器获取LabDCT投影.
- 使用开源方法重建3D谷物地图.
- 将重建的地图与同步仪数据进行比较以进行验证.
主要成果:
- 在使用CCD和平板探测器的传统设置上,LabDCT的实施是成功的.
- 重建的粒度图显示了与同步仪测量的质量相当的质量.
- 与平面面板探测器相比,CCD探测器提供了优越的对比度和噪声比率.
- 采集时间小于1小时,可以获得可比的谷物地图质量,从而可以进行时间间隔研究.
结论:
- 在标准的实验室X射线断层扫描系统上,LabDCT可以有效地实现.
- 该技术提供了高质量的3D谷物映射,与同步子源相美.
- 缩短的采集时间和探测器的灵活性促进了LabDCT在材料表征方面的更广泛应用.
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