Three-dimensional displacement mapping of diffused Pt thermal barrier coatings via synchrotron X-ray computed tomography and digital volume correlation
Three-dimensional displacement mapping of diffused Pt thermal barrier coatings via synchrotron X-ray computed tomography and digital volume correlation
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DOI：
10.1016/j.scriptamat.2015.10.033
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发表时间：
2016-04
影响因子：
6
通讯作者：
D. Khoshkhou;M. Mostafavi;C. Reinhard;M. Taylor;D. Rickerby;I. Edmonds;H. Evans;J. Marrow;B. Connolly
中科院分区：
文献类型：
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作者：
D. Khoshkhou;M. Mostafavi;C. Reinhard;M. Taylor;D. Rickerby;I. Edmonds;H. Evans;J. Marrow;B. Connolly
采用同步加速器x射线微计算机断层扫描技术观察了γ/γ′热障涂层在1200°C循环氧化后的三维变形场，并通过数字体积相关进行了分析。氧化物增厚和粘结层蠕变位移被量化为温度下暴露时间的函数。这些位移的线性梯度在平面内和垂直于氧化层测量。第一个热循环位移变化最大；破坏性切片证实了dvc计算的位移幅度。
A progressive study of the three-dimensional deformation field within a γ/γ′ thermal barrier coating following cyclic oxidation at 1200 °C is presented, observed using synchrotron X-ray micro-computed tomography and analysed by digital volume correlation. Oxide thickening and bond coat creep displacements are quantified as a function of exposure time at temperature. Linear gradients of these displacements are measured both in-plane and normal to the oxide layer. The first thermal cycle shows the most displacement changes; destructive sectioning confirms the DVC-calculated displacement magnitudes.