Loidl Dieter, Peterlik Herwig, Paris Oskar, Müller Martin, Burghammer Manfred, Riekel Christian
Institute of Materials Physics, University of Vienna, Boltzmanngasse 5, A-1090 Vienna, Austria.
J Synchrotron Radiat. 2005 Nov;12(Pt 6):758-64. doi: 10.1107/S0909049505013440. Epub 2005 Oct 18.
Hard X-ray beams with beam sizes in the sub-micrometre range are frequently available at third-generation synchrotron radiation sources, enabling new insights into the structure of materials at different levels of hierarchy by applying novel techniques such as scanning microbeam diffraction or scanning small-angle scattering. The high brilliance of the radiation from wiggler and undulator sources allows in situ experiments such as mechanical testing of single fibres to be performed, and even the combination of microbeam scanning with in situ testing is feasible. Three different experiments on single carbon fibres are presented: an in situ tensile test using a 10 microm collimated beam, a scanning experiment applying a 3 microm beam from a tapered glass capillary, and a scanning experiment with simultaneous in situ bending with a 0.1 microm beam provided by a waveguide structure.
在第三代同步辐射源中，经常可以获得束斑尺寸在亚微米范围内的硬X射线束，通过应用扫描微束衍射或扫描小角散射等新技术，能够在不同层次水平上对材料结构有新的认识。来自波荡器和摆动器源的高亮度辐射使得诸如单纤维力学测试等原位实验得以进行，甚至微束扫描与原位测试的结合也是可行的。本文展示了对单根碳纤维进行的三个不同实验：使用10微米准直束进行的原位拉伸试验、应用来自锥形玻璃毛细管的3微米束进行的扫描实验，以及使用波导结构提供的0.1微米束同时进行原位弯曲的扫描实验。
