Evaluation of Boron Carbide powder stability under accelerated aging
Boron carbide (B4C) is a hard and durable ceramic used in aerospace, nuclear reactors, ballistic protection, etc. The stability of B4C powders at ambient conditions has been investigated using accelerated ageing by heat treatment at 400 °C in controlled atmospheres. The degree of conversion of B4C i...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-06-01
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| Series: | Open Ceramics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666539525000227 |
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| author | Amruth Kaitheri Johannes Ofstad Elvia Anabela Chavez Panduro Martin Oppegård Sanosh Kunjalukkal Padmanabhan Sudipto Pal Antonio Alessandro Licciulli Vidar Johannesen Trygve Eidet Kjell Wiik Mari-Ann Einarsrud |
| author_facet | Amruth Kaitheri Johannes Ofstad Elvia Anabela Chavez Panduro Martin Oppegård Sanosh Kunjalukkal Padmanabhan Sudipto Pal Antonio Alessandro Licciulli Vidar Johannesen Trygve Eidet Kjell Wiik Mari-Ann Einarsrud |
| author_sort | Amruth Kaitheri |
| collection | DOAJ |
| description | Boron carbide (B4C) is a hard and durable ceramic used in aerospace, nuclear reactors, ballistic protection, etc. The stability of B4C powders at ambient conditions has been investigated using accelerated ageing by heat treatment at 400 °C in controlled atmospheres. The degree of conversion of B4C increased in the following order: Argon (no reaction), humidified argon (∼4 %), synthetic air (∼13 %) and humidified synthetic air (∼19 %). In humidified atmosphere, the reaction product was boric acid due to cooling in the presence of humidity. The high conversion in humidified synthetic air suggests that humidity accelerates the oxidation, and a reaction mechanism is proposed to explain the enhanced rate of oxidation. It is anticipated that the observed oxidation reactions are not limited to 400 °C but will also occur at ambient temperatures. This agrees with observations of reduced quality of the B4C during storage in ambient atmosphere. |
| format | Article |
| id | doaj-art-c6e45994543b48ed877d77d64f6e77e3 |
| institution | Kabale University |
| issn | 2666-5395 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Open Ceramics |
| spelling | doaj-art-c6e45994543b48ed877d77d64f6e77e32025-08-20T03:45:28ZengElsevierOpen Ceramics2666-53952025-06-012210075510.1016/j.oceram.2025.100755Evaluation of Boron Carbide powder stability under accelerated agingAmruth Kaitheri0Johannes Ofstad1Elvia Anabela Chavez Panduro2Martin Oppegård3Sanosh Kunjalukkal Padmanabhan4Sudipto Pal5Antonio Alessandro Licciulli6Vidar Johannesen7Trygve Eidet8Kjell Wiik9Mari-Ann Einarsrud10Department of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, Norway; Department of Innovation Engineering, University of Salento, Lecce, ItalyDepartment of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Innovation Engineering, University of Salento, Lecce, ItalyDepartment of Innovation Engineering, University of Salento, Lecce, ItalyDepartment of Innovation Engineering, University of Salento, Lecce, ItalyKymear International, Lillesand, NorwayKymear International, Lillesand, NorwayDepartment of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Materials Science and Engineering, NTNU Norwegian University of Science and Technology, Trondheim, Norway; Corresponding author.Boron carbide (B4C) is a hard and durable ceramic used in aerospace, nuclear reactors, ballistic protection, etc. The stability of B4C powders at ambient conditions has been investigated using accelerated ageing by heat treatment at 400 °C in controlled atmospheres. The degree of conversion of B4C increased in the following order: Argon (no reaction), humidified argon (∼4 %), synthetic air (∼13 %) and humidified synthetic air (∼19 %). In humidified atmosphere, the reaction product was boric acid due to cooling in the presence of humidity. The high conversion in humidified synthetic air suggests that humidity accelerates the oxidation, and a reaction mechanism is proposed to explain the enhanced rate of oxidation. It is anticipated that the observed oxidation reactions are not limited to 400 °C but will also occur at ambient temperatures. This agrees with observations of reduced quality of the B4C during storage in ambient atmosphere.http://www.sciencedirect.com/science/article/pii/S2666539525000227Boron carbideOxidationAccelerated ageing |
| spellingShingle | Amruth Kaitheri Johannes Ofstad Elvia Anabela Chavez Panduro Martin Oppegård Sanosh Kunjalukkal Padmanabhan Sudipto Pal Antonio Alessandro Licciulli Vidar Johannesen Trygve Eidet Kjell Wiik Mari-Ann Einarsrud Evaluation of Boron Carbide powder stability under accelerated aging Open Ceramics Boron carbide Oxidation Accelerated ageing |
| title | Evaluation of Boron Carbide powder stability under accelerated aging |
| title_full | Evaluation of Boron Carbide powder stability under accelerated aging |
| title_fullStr | Evaluation of Boron Carbide powder stability under accelerated aging |
| title_full_unstemmed | Evaluation of Boron Carbide powder stability under accelerated aging |
| title_short | Evaluation of Boron Carbide powder stability under accelerated aging |
| title_sort | evaluation of boron carbide powder stability under accelerated aging |
| topic | Boron carbide Oxidation Accelerated ageing |
| url | http://www.sciencedirect.com/science/article/pii/S2666539525000227 |
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