Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust
ABSTRACTSpherical-like β-phase silicon nitride (β-Si3N4) powder has been synthesized by direct nitridation of silicon saw dust recovered from the photovoltaic industry in ammonia gas (NH3) at 1300°C with calcium fluoride (CaF2) as additive. The X-ray diffraction (XRD) analysis indicates that the for...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-07-01
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| Series: | Journal of Asian Ceramic Societies |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/21870764.2023.2220237 |
| _version_ | 1797737734750601216 |
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| author | Yu Lan Xiao-Min Li Lin Hu Zuo Song Lang Zhou Xiu-Qin Wei Chuan-Qiang Yin |
| author_facet | Yu Lan Xiao-Min Li Lin Hu Zuo Song Lang Zhou Xiu-Qin Wei Chuan-Qiang Yin |
| author_sort | Yu Lan |
| collection | DOAJ |
| description | ABSTRACTSpherical-like β-phase silicon nitride (β-Si3N4) powder has been synthesized by direct nitridation of silicon saw dust recovered from the photovoltaic industry in ammonia gas (NH3) at 1300°C with calcium fluoride (CaF2) as additive. The X-ray diffraction (XRD) analysis indicates that the formation of β-Si3N4 is enhanced and accelerated in NH3 compared to nitrogen (N2). The scanning electron microscope (SEM) examination shows that, compared with N2, NH3 contributes to the formation of spherical-like particles, and all irregular silicon particles are transformed into spherical-like β-Si3N4 particles in the NH3 atmosphere. These results indicate that the NH3 atmosphere is conducive to the formation of submicron spherical-like β-Si3N4 particles. A complete submicron spherical-like Si3N4 powder with 93.12 wt% β phase has been synthesized by direct nitridation of silicon saw dust assisted with 5 wt% CaF2 additives in NH3. The mechanism for the formation of the spherical-like β-Si3N4 powder has also been discussed. |
| first_indexed | 2024-03-12T13:32:46Z |
| format | Article |
| id | doaj.art-cd41cc273d41455e8e8a05d9e22a81d2 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-03-12T13:32:46Z |
| publishDate | 2023-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-cd41cc273d41455e8e8a05d9e22a81d22023-08-24T08:13:20ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642023-07-0111335836410.1080/21870764.2023.2220237Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dustYu Lan0Xiao-Min Li1Lin Hu2Zuo Song3Lang Zhou4Xiu-Qin Wei5Chuan-Qiang Yin6Institute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaInstitute of Photovoltaics, Nanchang University, Nanchang, ChinaABSTRACTSpherical-like β-phase silicon nitride (β-Si3N4) powder has been synthesized by direct nitridation of silicon saw dust recovered from the photovoltaic industry in ammonia gas (NH3) at 1300°C with calcium fluoride (CaF2) as additive. The X-ray diffraction (XRD) analysis indicates that the formation of β-Si3N4 is enhanced and accelerated in NH3 compared to nitrogen (N2). The scanning electron microscope (SEM) examination shows that, compared with N2, NH3 contributes to the formation of spherical-like particles, and all irregular silicon particles are transformed into spherical-like β-Si3N4 particles in the NH3 atmosphere. These results indicate that the NH3 atmosphere is conducive to the formation of submicron spherical-like β-Si3N4 particles. A complete submicron spherical-like Si3N4 powder with 93.12 wt% β phase has been synthesized by direct nitridation of silicon saw dust assisted with 5 wt% CaF2 additives in NH3. The mechanism for the formation of the spherical-like β-Si3N4 powder has also been discussed.https://www.tandfonline.com/doi/10.1080/21870764.2023.2220237silicon nitridedirect nitridationspherical-like |
| spellingShingle | Yu Lan Xiao-Min Li Lin Hu Zuo Song Lang Zhou Xiu-Qin Wei Chuan-Qiang Yin Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust Journal of Asian Ceramic Societies silicon nitride direct nitridation spherical-like |
| title | Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust |
| title_full | Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust |
| title_fullStr | Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust |
| title_full_unstemmed | Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust |
| title_short | Synthesis of spherical-like β-Si3N4 powder by direct nitridation of silicon saw dust |
| title_sort | synthesis of spherical like β si3n4 powder by direct nitridation of silicon saw dust |
| topic | silicon nitride direct nitridation spherical-like |
| url | https://www.tandfonline.com/doi/10.1080/21870764.2023.2220237 |
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