Dresden 2026 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

MM: Fachverband Metall- und Materialphysik

MM 3: Mechanical Properties and Alloy Design I

MM 3.6: Vortrag

Montag, 9. März 2026, 11:45–12:00, SCH/A215

Microstructural and Chemical Analysis on MoSiTi samples with PDC coating for High Temperature Application — •Ingrit Nurak¹, Daniela Camacho², Lukas Korell³, Giorgia Guardi¹, Heike Störmer¹, Svetlana Korneychuk¹, Yolita M. Eggeler¹, Astrid Pundt¹, and Samuel A. Kredel² — ¹Karlsruher Institut für Technologie, Karlsruhe, Germany — ²Technische Universität Darmstadt, Darmstadt, Germany — ³Dechema Forschungszentrum, Frankfurt, Germany

MoSiTi material is of high interest for high temperature applications, such as Mo-20Si-52.8Ti [Schliephake et. al., 2019]. In this presentation, we investigate the combination of this material with a Cr-bond coat and a Si(Hf, Ta)BCN(O)-polymer derived ceramic (PDC) upper layer. The structural and chemical evolution of the layered material, depending on the specific synthetic routes used and additional thermal treatments will be addressed by using different scanning and transmission electron microscopy (SEM, TEM) techniques. TEM will be applied to the (i) polymer-derived ceramic nanocomposites coating, to the development of (ii) ultra-high temperature silicides and to the (iii) Cr bond coat layer. Heat treatments will be addressed at 1200°C and 1400°C both in air and in argon atmosphere. The experimental outcomes demonstrate that the Materialsystem exhibits the capacity to withstand temperatures of 1200°C for an hour without delamination. Notwithstanding the application of heat treatment at 1400°C, there is no oxygen penetration into the MoSiTi substrate occurred. Moreover, the PDC coating was found to remain partially amorphous.

Keywords: High Temperature Materials; Refractory Alloy; Bond Coat; Polymer Derived Ceramic; Coating