Van-Huy Nguyen Asl, Mehdi Shahedi Delbari, Seyed Ali Quyet Van Le Namini, Abbas Sabahi Cha, Joo Hwan Lee, Sea-Hoon Jang, Ho Won Mohammadi, Mohsen Shokouhimehr, Mohammadreza 2024-01-19T15:02:04Z 2024-01-19T15:02:04Z 2021-09-04 2021-04-01 0272-8842 https://pubs.kist.re.kr/handle/201004/117157 Introducing the SiC additive resulted in a noticeable enhancement in the sintering behavior of the ZrB2-hBN composite, profiting from the SiC involvement in the surface oxide removal. This research intended to compare two ceramics of ZrB2-hBN and ZrB2-SiC-hBN in terms of sinterability, microstructure, and mechanical features. Both samples were spark plasma sintered at 2000 degrees C for 5 min under 30 MPa. The SiC-free specimen reached a relative density of lower than 95%, while incorporating SiC improved this value up to 99.3%, resulting in near fully dense material. The role of SiC on oxide removal was found to be the chief cause in enhancing the sinterability of the ZrB2-SiC-hBN sample compared to ZrB2-hBN. According to the field emission scanning electron microscopy (FESEM), field emission-electron probe microanalyzer (FE-EPMA), X-ray diffractometry (XRD), and X-ray photoelectron spectroscopy (XPS) studies, both systems were unreactive, and no major in-situ phase could be produced over the sintering process. The ZrB2-SiC-hBN composite reached an elastic modulus of 374 GPa and a Vickers hardness of 19 GPa. English ELSEVIER SCI LTD Effects of SiC on densification, microstructure and nano-indentation properties of ZrB2-BN composites Article 10.1016/j.ceramint.2020.12.129 1 CERAMICS INTERNATIONAL, v.47, no.7, pp.9873 - 9880 CERAMICS INTERNATIONAL 47 7 9873 9880 scie scopus 000623673900007 2-s2.0-85098650577 Materials Science, Ceramics Materials Science Article Spark plasma sintering UHTC Characterization Microstructure