Micro-scale testing of ductile and brittle cantilever beam specimens in situ with a dual beam workstation
Micro-scale testing of ductile and brittle cantilever beam specimens in situ with a dual beam workstation
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DOI：
10.1088/0957-0233/24/5/055010
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发表时间：
2013-04
影响因子：
2.4
通讯作者：
J. Darnbrough;Dong Liu;P. Flewitt
中科院分区：
文献类型：
--
作者：
J. Darnbrough;Dong Liu;P. Flewitt
采用聚焦离子束铣削技术制备了微尺度悬臂梁试样，在室温下对单晶硅、纳米晶镍和多层结构热障涂层进行了原位机械加载，观察了试样的变形和断裂。微尺度制备技术允许从样品中的优选位置选择悬臂梁，以便可以评估特定的机械性能。因此，这些微观结构特性可以与整个试验期间对试样响应的直接观察相结合。对上述材料的力学性能和响应进行了讨论，并与先前公布的数据进行了比较。
Micro-scale cantilever beam specimens created by focused ion beam milling have been mechanically loaded in situ at room temperature to observe the deformation and fracture of single crystal silicon, nanocrystalline nickel and thermal barrier coatings with a multilayer structure. The micro-scale preparation technique allows cantilever beams to be selected from preferred positions in the samples so that specific mechanical properties can be evaluated. As a consequence these microstructural specific properties can be combined with direct observation of the response of the test specimen throughout the period of the test. The measured mechanical properties and response for the materials given above are discussed and compared with previously published data.