Makowska, MałgorzataSasikumar, Pradeep Vallachira WarriamHagelüken, LorenzSanchez, Dario F.Casati, NicolaMarone, FedericaBlugan, GurdialBrugger, JürgenVan Swygenhoven, Helena2020-08-042020-08-042020-08-042020-08-0110.1016/j.actamat.2020.07.067https://infoscience.epfl.ch/handle/20.500.14299/170562Morphology, 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.Polymer-derived ceramicsTi modified SiOCTomographic microscopyChemical imagingDiffraction contrast imagingCeramicsCracks, porosity and microstructure of Ti modified polymer-derived SiOC revealed by absorption-, XRD- and XRF-contrast 2D and 3D imagingtext::journal::journal article::research article