ZrB2 ceramics are considered potential materials for hypersonic systems in view of the melting point exceeding 3000 °C and excellent ablation resistance. Second phases, including SiC or CrB2, further improve the oxidation behavior, whereas a lighter phase, like TiB2 can decrease the overall weight. In this work, a powder mixture containing ZrB2, TiB2, CrB2 and SiC was mechanically activated using high energy ball-milling. Sintering was performed by hot pressing following different thermal cycles, and subsequent annealing to remove oxide phases and reduce micro-cracking. The microstructure and hardness of the dense ceramics are compared in relationship to the thermal history. Fully dense ceramics were obtained with different oxide-phases amount depending on the sintering cycle and hardness approaching 24 GPa were achieved. Future works will explore the strength and oxidation resistance of this multi-phase system to check its suitability for hypersonic systems.
Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia, 2021, 83-83
Publisher:
Belgrade : Innovation Center of Faculty of Mechanical Engineering
Funding / projects:
NATO project SPS G5767 - "Super Strong Ceramics for Protection in Harsh Environments and DefenCE" (SUSPENCE)
TY - CONF
AU - Obradović, Nina
AU - Filipović, Suzana
AU - Gilli, N.
AU - Silvestroni, L.
PY - 2021
UR - https://dais.sanu.ac.rs/123456789/12352
AB - ZrB2 ceramics are considered potential materials for hypersonic systems in view of the melting point exceeding 3000 °C and excellent ablation resistance. Second phases, including SiC or CrB2, further improve the oxidation behavior, whereas a lighter phase, like TiB2 can decrease the overall weight. In this work, a powder mixture containing ZrB2, TiB2, CrB2 and SiC was mechanically activated using high energy ball-milling. Sintering was performed by hot pressing following different thermal cycles, and subsequent annealing to remove oxide phases and reduce micro-cracking. The microstructure and hardness of the dense ceramics are compared in relationship to the thermal history. Fully dense ceramics were obtained with different oxide-phases amount depending on the sintering cycle and hardness approaching 24 GPa were achieved. Future works will explore the strength and oxidation resistance of this multi-phase system to check its suitability for hypersonic systems.
PB - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3 - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1 - Preparation and characterization of ZrB2-TiB2 based composites for hypersonic systems
SP - 83
EP - 83
UR - https://hdl.handle.net/21.15107/rcub_dais_12352
ER -
@conference{
author = "Obradović, Nina and Filipović, Suzana and Gilli, N. and Silvestroni, L.",
year = "2021",
abstract = "ZrB2 ceramics are considered potential materials for hypersonic systems in view of the melting point exceeding 3000 °C and excellent ablation resistance. Second phases, including SiC or CrB2, further improve the oxidation behavior, whereas a lighter phase, like TiB2 can decrease the overall weight. In this work, a powder mixture containing ZrB2, TiB2, CrB2 and SiC was mechanically activated using high energy ball-milling. Sintering was performed by hot pressing following different thermal cycles, and subsequent annealing to remove oxide phases and reduce micro-cracking. The microstructure and hardness of the dense ceramics are compared in relationship to the thermal history. Fully dense ceramics were obtained with different oxide-phases amount depending on the sintering cycle and hardness approaching 24 GPa were achieved. Future works will explore the strength and oxidation resistance of this multi-phase system to check its suitability for hypersonic systems.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Preparation and characterization of ZrB2-TiB2 based composites for hypersonic systems",
pages = "83-83",
url = "https://hdl.handle.net/21.15107/rcub_dais_12352"
}
Obradović, N., Filipović, S., Gilli, N.,& Silvestroni, L.. (2021). Preparation and characterization of ZrB2-TiB2 based composites for hypersonic systems. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 83-83.
https://hdl.handle.net/21.15107/rcub_dais_12352
Obradović N, Filipović S, Gilli N, Silvestroni L. Preparation and characterization of ZrB2-TiB2 based composites for hypersonic systems. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:83-83.
https://hdl.handle.net/21.15107/rcub_dais_12352 .
Obradović, Nina, Filipović, Suzana, Gilli, N., Silvestroni, L., "Preparation and characterization of ZrB2-TiB2 based composites for hypersonic systems" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):83-83,
https://hdl.handle.net/21.15107/rcub_dais_12352 .
