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Dual composite ceramics for improved properties
Multi-scale composite architectures for ultra-refractory tough ceramic composites
Principal investigator: Frédéric Monteverde
Involved personnel: Diletta Sciti, Laura Silvestroni, Simone Failla, Cesare Melandri, Daniele Dalle Fabbriche
Starting date: 01/2014
Duration: 48 mesi
Total founding: 600.000 €
Call: National Science Foundation Call 11-568
Action: Materials World Network
Project Coordinator: Frédéric Monteverde (ISTEC-CNR, Faenza), William Fahrenholtz (MST, Rolla, Missouri)
Patnership: Missouri Science and Technology University (Rolla, USA)
The aim of the bilateral project is to explore a new process approach aimed at controlling the microstructure and improving the mechanical performance at high temperature through “dual architectures”. The proposal sees the joint effort of two research groups: ISTEC-CNR of Faenza and the Missouri University of Science and Technology (Rolla, Missouri).
The research focuses on the fundamental correlations between microstructure-process-properties within dual architecture ceramics. While the fragile chemical phases are commonly sintered with ductile additives, these materials can be used at temperatures not far from the environmental one. The figure shows the typical fracture behavior of an intrinsically hard but fragile ceramic material when subject to indentation. Hence, the research proposal aims to establish a new paradigm of structural materials that maintain superior properties even at high temperatures.
Publications & Patents
- F. Monteverde, C. Melandri, S. Failla, R. Grohsmeyer, G. Hilmas, W. Fahrenholtz, Escape from the strength-to-toughness paradox: Bulk ceramics through dual composite architectures. JOURNAL OF ALLOYS AND COMPOUNDS, vol. 38, p. 2961-2970, 2018
- F. Monteverde, R. Grohsmeyer, A. Stanfield, G. Hilmas, W. Fahrenholtz, Densification behavior of ZrB2-MoSi2 ceramics: The formation and evolution of core-shell solid solution structures. JOURNAL OF ALLOYS AND COMPOUNDS, vol. 779, p. 950-961, 2019
- R. Grohsmeyer, L. Silvestroni, G. Hilmas, F. Monteverde, W. Fahrenholtz, A. D’Angió, D. Sciti, ZrB2-MoSi2 ceramics: A comprehensive overview of microstructure and properties relationships. Part II: Mechanical properties. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, vol. 39, p. 1948-1954, 2019
- R. Grohsmeyer, L. Silvestroni, G. Hilmas, F. Monteverde, W. Fahrenholtz, A. D’Angiò, D. Sciti, ZrB2-MoSi2 ceramics: A comprehensive overview of microstructure and properties relationships. Part I: Processing and microstructure. JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, vol. 39, p. 1939-1947, 2019