Abstract Morphology, phase composition, cracks and porosity are investigated in monolithic Ti modified SiOC polymer-derived ceramics pyrolyzed at 1000 °C and 1400 °C using synchrotron X-ray full field absorption-contrast tomographic microscopy and scanning XRF- and XRD-contrast microscopy. Samples pyrolyzed at 1000 °C show a crack-free structure, but pyrolysis at 1400 °C results in formation of cracks and at higher Ti content also shows porosity. Tomography revealed the formation of a layered morphology that varies in terms of crystallographic structure and/or Ti stoichiometric concentration. The microstructural observations and electrical conductivity are discussed in terms of pyrolysis temperature and Ti content.

中文翻译：

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通过吸收、XRD 和 XRF 对比 2D 和 3D 成像揭示 Ti 改性聚合物衍生的 SiOC 的裂纹、孔隙率和微观结构

摘要 使用同步加速器 X 射线全场吸收对比断层显微术和扫描 XRF 和 XRD 对比显微术研究了在 1000 °C 和 1400 °C 下热解的整体 Ti 改性 SiOC 聚合物衍生陶瓷的形貌、相组成、裂纹和孔隙率. 在 1000 °C 下热解的样品显示出无裂纹结构，但在 1400 °C 下热解会导致形成裂纹，并且在较高的 Ti 含量下也显示出孔隙率。断层扫描揭示了分层形态的形成，其在晶体结构和/或 Ti 化学计量浓度方面有所不同。根据热解温度和 Ti 含量讨论了微观结构观察和电导率。