Preparation and Characteristics of High-Performance, Low-Density Metallo–Ceramics Composite

0581975 - ÚFP 2024 RIV CH eng J - Journal Article
Abramovskis, V. - Drunka, R. - Csáki, Š. - Lukáč, František - Veverka, Jakub - Illková, Ksenia - Gavrilovs, P. - Shishkin, A.
Preparation and Characteristics of High-Performance, Low-Density Metallo–Ceramics Composite.
Materials. Roč. 16, č. 24 (2023), č. článku 7523. E-ISSN 1996-1944
Institutional support: RVO:61389021
Keywords : cenospheres * physical vapor deposition * spark plasma sintering * syntactic foam * titanium coating
OECD category: Materials engineering
Impact factor: 3.4, year: 2022
Method of publishing: Open access
https://www.mdpi.com/1996-1944/16/24/7523

By applying the physical vapour deposition method, hollow ceramic microspheres were coated with titanium, and subsequently, they were sintered using the spark plasma sintering technique to create a porous ceramic material that is lightweight and devoid of a matrix. The sintering process was carried out at temperatures ranging from 1050 to 1200 °C, with a holding time of 2 min. The samples were subjected to conventional thermal analyses (differential scanning calorimetry, thermogravimetry, dilatometry), oxidation resistance tests, and thermal diffusivity measurements. Phase analysis of the samples was performed using the XRD and the microstructure of the prepared specimens was examined using electron microscopy. The titanium coating on the microspheres increased the compressive strength and density of the resulting ceramic material as the sintering temperature increased. The morphology of the samples was carefully examined, and phase transitions were also identified during the analysis of the samples.
Permanent Link: https://hdl.handle.net/11104/0350111