Naeimeh Sadat Peighambardoust - Koç University Boron and Advanced Materials Applications and Research Center (KUBAM), Sariyer, Istanbul, ۳۴۴۵۰, Turkey
Çağın Çevik - Department of Biophysics, Istanbul University-Cerrahpasa, Istanbul, Turkey
Tannaz Assar - Department of Geophysical Engineering, Istanbul Technical University, Istanbul, Turkey
Sunghoon Jung - Advanced Nano Surface Department, Korea Institute of Materials Science, Changwon, ۵۱۵۰۸, Republic of Korea
Seon Yong Lee - Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul ۰۸۸۲۶, Republic of Korea
Joo Hwan Cha - Innovative Enterprise Cooperation Center, Korea Institute of Science & Technology, Hwarangro ۱۴-gil, Seongbuk-gu, Seoul ۰۲۷۹۲, Republic of Korea

In this research, various types of nitride additives were incorporated into titanium diboride attaining dense TiB۲-based ceramics by field-assisted sintering technique. The addition of different types of nitride additives, namely Si۳N۴, BN, AlN, and TiN, significantly improved the sinterability of TiB۲, achieving near fully dense ceramics. The X-ray diffraction analysis and microstructural evaluation confirmed the presence of the h-BN compound in all specimens. In the TiB۲-Si۳N۴ ceramic, Si۳N۴ additive reacted with B۲O۳ oxide, in-situ generating h-BN, and SiO۲ phases. Although the h-BN phase was produced in the TiB۲-AlN specimen, the main proportion of AlN remained in the sample as an unreacted ex-situ phase. In terms of the TiB۲-TiN ceramic, some of the nitrogen and boron atoms could leave the TiN and TiB۲ crystalline structures, contributing to the in-situ formation of h-BN.

Titanium diboride, Silicon nitride, Hexagonal boron nitride, Aluminum nitride, Titanium nitride, Field assisted sintering technique