Results
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How can we make the best use of image data showing the heterogeneity during reactions ?
April 10, 2018
Macroscopic phenomena, such as fracture, corrosion, and degradation of materials, are associated with various reactions which progress heterogeneously. Thus, material properties are generally determined not by their averaged characteristics but by specific features in heterogeneity (or ‘trigger sites’) of phases, chemical states, etc., where the key reactions that dictate macroscopic properties initiate and propagate.Here, we introduce a new persistent homology approach for identifying trigger sites and apply it to the heterogeneous reduction of iron ore sinters...
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Chemical state mapping of heterogeneous reduction of iron ore sinter
June 21, 2017
Degradation of EBC progresses heterogeneously during heat cycles. Observation of the heterogeneous reaction, especially change of chemical states is of great importance. We developed the chemical state mapping using XANES, and applied it to a model case: heterogeneous reduction of iron oxides.