Özet
This study explains the synthesis mechanism of (HfTiZrMnCr)B2 high entropy diboride ceramics prepared via a combined route consisting of ball milling and spark plasma sintering. Firstly, metal borides were in-house synthesized using mechanochemical synthesis and leaching processes under optimum conditions from metal oxides, B2O3 and Mg precursors. The (HfTiZr)B2 composition, chosen as the main composition, was hybridized with two different methods: planetary and vibratory ball milling. As a result of milling experiments, 6 h vibratory milling was determined as the optimum duration, and all compositions were produced by spark plasma sintering method (2000 °C, 30 MPa) following this optimum condition. Different compositions were used to see which one of the HfB2, TiB2, ZrB2 compounds acted as a host material. Based on the phase analyses, single-phase HEB structures, Ti-rich phases and Hf, Ti, Zr-oxides were observed in the microstructure. Detailed physical, microstructural, mechanical and termal characterizations were performed: the highest hardness values were observed in the (HfTiMnCr)B2 and (HfTiZrMnCr)B2 samples as ∼ 27 GPa, the lowest wear rate was recorded for the (HfTiZrMnCr)B2 sample as ∼2 × 10−6 Nm/mm3, and the highest oxidation resistance was achieved at the (HfZrMnCr)B2 and (HfTiMnCr)B2 samples as weight gains ∼ 1.90%.
Orijinal dil | İngilizce |
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Sayfa (başlangıç-bitiş) | 298-315 |
Sayfa sayısı | 18 |
Dergi | Journal of Materials Research and Technology |
Hacim | 27 |
DOI'lar | |
Yayın durumu | Yayınlandı - 1 Kas 2023 |
Bibliyografik not
Publisher Copyright:© 2023 The Author(s)
Finansman
This study was supported by the “TENMAK National Boron Research Institute (BOREN), Türkiye” with the project number of 2019-31-07-15-001. It was also partially funded by “Istanbul Technical University Scientific Research Projects (ITU-BAP), Türkiye” with the project number of MYL-2022-43543. Also, the authors are grateful to Tech. Hasan Dinçer for EPMA/EDS analysis carried out in Prof. Dr. Adnan Tekin Materials Science and Production Technologies Advanced Research Center (ATARC). The authors thank to Assoc. Prof. Dr. Nazlı Akçamlı Kaya and M.Sc. Berk Şenyurt from Bursa Technical University for their helps in wear analyses. Authors also thank to Prof. Dr. Hüseyin Çimenoğlu for profilometry measurements. Duygu Ağaoğulları gratefully thanks to the Unesco Turkey National Comission and L'Oréal Turkey for awarding and supporting her project in the scope of “For Women in Science Program 2022”. This study was supported by the “TENMAK National Boron Research Institute (BOREN), Türkiye” with the project number of 2019-31-07-15-001. It was also partially funded by “Istanbul Technical University Scientific Research Projects (ITU-BAP), Türkiye” with the project number of MYL-2022-43543. Also, the authors are grateful to Tech. Hasan Dinçer for EPMA/EDS analysis carried out in Prof. Dr. Adnan Tekin Materials Science and Production Technologies Advanced Research Center (ATARC). The authors thank to Assoc. Prof. Dr. Nazlı Akçamlı Kaya and M.Sc. Berk Şenyurt from Bursa Technical University for their helps in wear analyses. Authors also thank to Prof. Dr. Hüseyin Çimenoğlu for profilometry measurements. Duygu Ağaoğulları gratefully thanks to the Unesco Turkey National Comission and L'Oréal Turkey for awarding and supporting her project in the scope of “For Women in Science Program 2022”.
Finansörler | Finansör numarası |
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ATARC | |
Bursa Technical University | |
Production Technologies Advanced Research Center | |
TENMAK National Boron Research Institute | |
Unesco Turkey National Comission | |
Ulusal Bor Araştırma Enstitüsü | 2019-31-07-15-001 |
Istanbul Teknik Üniversitesi | |
Bilimsel Araştırma Projeleri Birimi, İstanbul Teknik Üniversitesi | MYL-2022-43543 |