Acquisition of a MicroIndentation Machine for an SEM (Scanning Electron Microscope)

这种微压痕机将用于测量复合材料的界面性能，以及在材料研究中需要测量高空间分辨率的机械性能的广泛应用。新开发的仪器安装在现有的扫描电子显微镜（SEM）上，并利用了SEM的固有功能，而不影响传统功能。该仪器的一个独特之处在于能够在高温（1000℃）下进行测量，具有高空间分辨率和负载灵敏度，同时直接观察压痕和故障。该设备将用于研究复合材料中出现的界面现象，包括测量界面特性和纤维涂层的影响、机械和热历史、残余应力状态和测试温度。广泛的应用计划包括研究超细粒（UFG）金属的硬度，层状物体制造（LOM）生产的组件的层间粘附性，以及纳米结构材料和膜的行为。在高达（1000℃）的温度下进行具有高空间分辨率和负载灵敏度的机械测试的能力是前所未有的，这将导致对界面和细粒度结构行为的理解增加，以及高温下发生的局部现象。＊＊＊

9625852 Nutt This micro-indentation machine will be used for measurements of interface properties in composite materials, as well as a broad range of applications in materials research requiring measurements of mechanical properties with high spatial resolution. The newly developed instrument mounts to an existing scanning electron microscope (SEM) and capitalizes on the inherent capabilities of the SEM without compromising conventional functions. A unique feature of the instrument is the capability to perform measurements at high temperatures (1000oC) with high spatial resolution and load sensitivity, while directly observing the indentation and failure. %%% The equipment will be used in studies of interfacial phenomena occurring in composite materials, including measurements of interface properties and the effects of fiber coatings, mechanical and thermal history, residual stress state, and test temperature. A broad range of applications are planned that include studies of hardness in ultra-fine-grained (UFG) metals, interlayer adhesion in components produced by layered object manufacturing (LOM), and the behavior of nanostructured materials and membranes. The capability of performing mechanical tests with high spatial resolution and load sensitivity at temperatures up to (1000oC) is unprecedented and will lead to increased understanding of the behavior of interfaces and fine-grained structures, as well as localized phenomena occurring at high- temperature. ***