Field emission scanning electron microscope

场发射扫描电子显微镜

• 批准号: 532701230
• 金额: --
• 依托单位: Bergische Universität Wuppertal
• 依托单位国家: 德国
• 项目类别: Major Research Instrumentation
• 财政年份: 2024
• 资助国家: 德国
• 起止时间: 2023-12-31 至 无数据
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/532701230?language=en
• 关键词: Field; emission; scanning; electron; microscope

A field emitter scanning electron microscope (FESEM) is requested for materials development in additive manufacturing. The device is to be integrated as a central element in the laboratory for powder-based materials development. An essential first step in the development of new materials for additive manufacturing is the investigation of microstructural properties such as composition-dependent phase formation and transformation of additively manufactured materials. Due to the unique process environments of additive manufacturing processes, it is also possible to create the smallest grain sizes down to glass-like states, as well as highly textured materials. For the development of new materials, which use the characteristic process features of additive manufacturing technologies based on powder nozzle as well as powder bed processes, it is indispensable to be able to investigate the finest microstructural components in detail. One focus of the research of the Chair of Materials Science and Additive Manufacturing is the development of partly highly complex high-temperature alloys based on intermetallic and Ni-based alloy systems. Due to the characteristically high cooling rates of additive manufacturing processes as well as the influence of intrinsic heat treatment caused by the layer-by-layer structure, material states are typically generated in disequilibrium states not represented by phase diagrams. Another focus is on the development of materials using self-synthesized nanoparticles to modify the properties of printed materials, including nanoparticle-polymer composites, in a variety of ways. The ability to systematically study composite and alloy compositions at BUW will provide extensive new scientific insight into composition-property correlations; which is particularly important in light of the goal of being able to develop application-specific material solutions in a targeted manner. By adding a high-performance scanning electron microscope with resolution in the single-digit nanometer range, low-pressure mode and corresponding analytics (energy dispersive X-ray spectroscopy (EDX) and electron backscatter diffraction (EBSD)), the fundamental research and development of new metallic and polymeric materials using nanoparticulate additives and intrinsically formed precipitates can be significantly extended and a substantial deepening of the understanding of composition-dependent phase formation under the special thermophysical solidification conditions during AM can be achieved. The proposed device thus occupies a key position for the materials science research spectrum of the Chair of Materials Science and Additive Manufacturing and the University of Wuppertal.

要求田间发射极扫描电子显微镜（FESEM）用于添加剂制造中的材料开发。该设备应作为粉末基材料开发实验室中的核心元素集成。开发新材料用于增材制造的重要第一步是研究微结构特性，例如依赖组成相位的相位和加性制造材料的转换。由于添加剂制造工艺的独特过程环境，也可以创建最小的谷物尺寸，直至类似玻璃状的状态以及高质感的材料。为了开发新材料，这些材料使用基于粉末喷嘴以及粉末床工艺的添加剂制造技术的特征特征，因此能够详细研究最优质的微结构组件是必不可少的。材料科学和添加剂制造主席研究的重点是基于金属间和基于NI的合金系统的部分高度复杂的高温合金的开发。由于添加剂制造过程的典型冷却速率以及由逐层结构引起的内在热处理的影响，因此材料状态通常是在未用相图表示的不平衡状态下产生的。另一个重点是使用自合成的纳米颗粒来开发材料，以各种方式修改印刷材料（包括纳米粒子 - 聚合物复合材料）的特性。 BUW系统地研究复合材料和合金组成的能力将为组成 - 特性相关性提供广泛的新科学见解。鉴于能够以目标方式开发针对特定的材料解决方案的目标，这一点尤其重要。 By adding a high-performance scanning electron microscope with resolution in the single-digit nanometer range, low-pressure mode and corresponding analytics (energy dispersive X-ray spectroscopy (EDX) and electron backscatter diffraction (EBSD)), the fundamental research and development of new metallic and polymeric materials using nanoparticulate additives and intrinsically formed precipitates can be significantly extended and a可以实现对在AM期间特殊的热物理固化条件下对组成依赖性相的理解的深厚加深。因此，该提议的设备占据了材料科学与添加剂制造业和沃珀塔尔大学材料科学研究范围的关键位置。