Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films
Transition metal nitrides (TMNs) have gained widespread application in protecting structural components due to their high strength and hardness. However, TMNs still have the challenge of structural instability and mechanical deterioration caused by oxidation under harsh high temperature conditions....
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Journal of Materiomics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2352847824001163 |
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| author | Shan Wang Rui Zhang Mengya Yuan Xinlei Gu Tao Zhou Mao Wen Kan Zhang |
| author_facet | Shan Wang Rui Zhang Mengya Yuan Xinlei Gu Tao Zhou Mao Wen Kan Zhang |
| author_sort | Shan Wang |
| collection | DOAJ |
| description | Transition metal nitrides (TMNs) have gained widespread application in protecting structural components due to their high strength and hardness. However, TMNs still have the challenge of structural instability and mechanical deterioration caused by oxidation under harsh high temperature conditions. Herein, we present a strategy combining component regulation with high-entropy engineering to develop an advanced high-temperature Al-containing high-entropy nitrides (HENs) material. To prevent the phase decomposition of AlN within the (NbMoTaWAl)N, theoretical simulations were employed to determine a critical atomic percent of 25.0% Al for maintaining the stability of the high-entropy structure. Ensuing experimental synthesis creates three NbMoTaWAlN films with varying Al content: a high-entropy film with 0.0% Al (HEN), a high-entropy film with 21.2% Al (HEN-Al), and an amorphous transition metal nitride film with 30.2% Al (a-TMN-Al), validating key high-entropy engineering benchmarks. It is found that the unique HEN-Al film exhibits excellent oxidation resistance and high-temperature hardness, attributed to the uniform distribution of Al atoms in the robust high-entropy structure, which creates conditions for forming a dense and continuous Al2O3 barrier layer, effectively hindering the diffusion of oxygen into the film interior. This study provides new insights to develop a new generation of high-temperature protective materials. |
| format | Article |
| id | doaj-art-b31cff0b341b441ba04c018fc8226af4 |
| institution | Kabale University |
| issn | 2352-8478 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materiomics |
| spelling | doaj-art-b31cff0b341b441ba04c018fc8226af42025-01-04T04:56:37ZengElsevierJournal of Materiomics2352-84782025-01-01111100890Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective filmsShan Wang0Rui Zhang1Mengya Yuan2Xinlei Gu3Tao Zhou4Mao Wen5Kan Zhang6Department of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaDepartment of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaDepartment of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaDepartment of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaDepartment of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaDepartment of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaCorresponding author.; Department of Materials Science and Key Laboratory of Automobile Materials, MOE, State Key Laboratory of Superhard Materials, Jilin University, Changchun, 130012, ChinaTransition metal nitrides (TMNs) have gained widespread application in protecting structural components due to their high strength and hardness. However, TMNs still have the challenge of structural instability and mechanical deterioration caused by oxidation under harsh high temperature conditions. Herein, we present a strategy combining component regulation with high-entropy engineering to develop an advanced high-temperature Al-containing high-entropy nitrides (HENs) material. To prevent the phase decomposition of AlN within the (NbMoTaWAl)N, theoretical simulations were employed to determine a critical atomic percent of 25.0% Al for maintaining the stability of the high-entropy structure. Ensuing experimental synthesis creates three NbMoTaWAlN films with varying Al content: a high-entropy film with 0.0% Al (HEN), a high-entropy film with 21.2% Al (HEN-Al), and an amorphous transition metal nitride film with 30.2% Al (a-TMN-Al), validating key high-entropy engineering benchmarks. It is found that the unique HEN-Al film exhibits excellent oxidation resistance and high-temperature hardness, attributed to the uniform distribution of Al atoms in the robust high-entropy structure, which creates conditions for forming a dense and continuous Al2O3 barrier layer, effectively hindering the diffusion of oxygen into the film interior. This study provides new insights to develop a new generation of high-temperature protective materials.http://www.sciencedirect.com/science/article/pii/S2352847824001163High-entropy nitrides(NbMoTaWAl)NThermal stabilityOxidation resistanceHardness |
| spellingShingle | Shan Wang Rui Zhang Mengya Yuan Xinlei Gu Tao Zhou Mao Wen Kan Zhang Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films Journal of Materiomics High-entropy nitrides (NbMoTaWAl)N Thermal stability Oxidation resistance Hardness |
| title | Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films |
| title_full | Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films |
| title_fullStr | Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films |
| title_full_unstemmed | Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films |
| title_short | Component regulation and high-entropy engineering for enhanced antioxidant and high-temperature mechanical properties of protective films |
| title_sort | component regulation and high entropy engineering for enhanced antioxidant and high temperature mechanical properties of protective films |
| topic | High-entropy nitrides (NbMoTaWAl)N Thermal stability Oxidation resistance Hardness |
| url | http://www.sciencedirect.com/science/article/pii/S2352847824001163 |
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