Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance
High-entropy nitride powders are one of prerequisite materials for the preparation of high-performance high-entropy nitride ceramics. In this paper, high-entropy (HfZrTiNbTa)N powders were synthesized via nitride (i.e., silicon nitride (Si3N4)) thermal reduction with soft mechano-chemical assistance...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2023-03-01
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| Series: | Journal of Advanced Ceramics |
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| Online Access: | https://www.sciopen.com/article/10.26599/JAC.2023.9220705 |
| _version_ | 1797858558847483904 |
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| author | Xiang Liu Youjun Lu Qian Xu Lutong Yang Hongfang Shen Wenzhou Sun Xiao Zhang Yanmin Wang |
| author_facet | Xiang Liu Youjun Lu Qian Xu Lutong Yang Hongfang Shen Wenzhou Sun Xiao Zhang Yanmin Wang |
| author_sort | Xiang Liu |
| collection | DOAJ |
| description | High-entropy nitride powders are one of prerequisite materials for the preparation of high-performance high-entropy nitride ceramics. In this paper, high-entropy (HfZrTiNbTa)N powders were synthesized via nitride (i.e., silicon nitride (Si3N4)) thermal reduction with soft mechano-chemical assistance. The results show that metal oxides like hafnium dioxide (HfO2), zirconium dioxide (ZrO2), titanium dioxide (TiO2), niobium pentoxide (Nb2O5), and tantalum pentoxide (Ta2O5) can all be transformed into the corresponding metal nitrides in the presence of Si3N4 at 1700 ℃, and solid solution of the metal nitrides can be formed as the temperature increases to 2100 ℃. The high-entropy (HfZrTiNbTa)N powders with submicron-sized particles, a narrower size distribution, and a single face-centered cubic (fcc) structure are obtained from raw material mixtures ground for 10 h and subsequently sintered at 1800 ℃. In addition, the high-entropy bulk nitride ceramics with relative density (Rw) of 94.31%±0.76%, Vickers hardness of 21.00±0.94 GPa, and fracture toughness (KIC) of 3.18±0.16 MPa·m1/2 are obtained with submicron-sized powders, which are superior to those obtained with micron-sized powders. |
| first_indexed | 2024-04-09T21:16:28Z |
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| id | doaj.art-93226f52834c43e89e07efc21c864823 |
| institution | Directory Open Access Journal |
| issn | 2226-4108 2227-8508 |
| language | English |
| last_indexed | 2024-04-09T21:16:28Z |
| publishDate | 2023-03-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Journal of Advanced Ceramics |
| spelling | doaj.art-93226f52834c43e89e07efc21c8648232023-03-28T09:05:44ZengTsinghua University PressJournal of Advanced Ceramics2226-41082227-85082023-03-0112356557710.26599/JAC.2023.9220705Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistanceXiang Liu0Youjun Lu1Qian Xu2Lutong Yang3Hongfang Shen4Wenzhou Sun5Xiao Zhang6Yanmin Wang7School of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaSchool of Materials Science & Engineering, North Minzu University, Yinchuan 750021, ChinaHigh-entropy nitride powders are one of prerequisite materials for the preparation of high-performance high-entropy nitride ceramics. In this paper, high-entropy (HfZrTiNbTa)N powders were synthesized via nitride (i.e., silicon nitride (Si3N4)) thermal reduction with soft mechano-chemical assistance. The results show that metal oxides like hafnium dioxide (HfO2), zirconium dioxide (ZrO2), titanium dioxide (TiO2), niobium pentoxide (Nb2O5), and tantalum pentoxide (Ta2O5) can all be transformed into the corresponding metal nitrides in the presence of Si3N4 at 1700 ℃, and solid solution of the metal nitrides can be formed as the temperature increases to 2100 ℃. The high-entropy (HfZrTiNbTa)N powders with submicron-sized particles, a narrower size distribution, and a single face-centered cubic (fcc) structure are obtained from raw material mixtures ground for 10 h and subsequently sintered at 1800 ℃. In addition, the high-entropy bulk nitride ceramics with relative density (Rw) of 94.31%±0.76%, Vickers hardness of 21.00±0.94 GPa, and fracture toughness (KIC) of 3.18±0.16 MPa·m1/2 are obtained with submicron-sized powders, which are superior to those obtained with micron-sized powders.https://www.sciopen.com/article/10.26599/JAC.2023.9220705soft mechanochemistrythermal reductionhigh-entropy nitride powdershigh-entropy nitride ceramics |
| spellingShingle | Xiang Liu Youjun Lu Qian Xu Lutong Yang Hongfang Shen Wenzhou Sun Xiao Zhang Yanmin Wang Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance Journal of Advanced Ceramics soft mechanochemistry thermal reduction high-entropy nitride powders high-entropy nitride ceramics |
| title | Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance |
| title_full | Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance |
| title_fullStr | Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance |
| title_full_unstemmed | Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance |
| title_short | Synthesis of (HfZrTiNbTa)N powders via nitride thermal reduction with soft mechano-chemical assistance |
| title_sort | synthesis of hfzrtinbta n powders via nitride thermal reduction with soft mechano chemical assistance |
| topic | soft mechanochemistry thermal reduction high-entropy nitride powders high-entropy nitride ceramics |
| url | https://www.sciopen.com/article/10.26599/JAC.2023.9220705 |
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