High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties
ABSTRACTA high purity Al2O3 ceramic (HPAOC) metallizing strategy was developed via gradient coating process of metallizing pastes with different ratios of Mo to manganese glass (MnG) contents, to improve the wettability and reactivity of metallized layer (ML) to the ceramic substrate and the seconda...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2023-04-01
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| Series: | Journal of Asian Ceramic Societies |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/21870764.2023.2195288 |
| _version_ | 1827936414425153536 |
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| author | Dongcai Li Cangbao He Yong Sheng Wang Wei Su Fengjun Zhang Haiyan Xu |
| author_facet | Dongcai Li Cangbao He Yong Sheng Wang Wei Su Fengjun Zhang Haiyan Xu |
| author_sort | Dongcai Li |
| collection | DOAJ |
| description | ABSTRACTA high purity Al2O3 ceramic (HPAOC) metallizing strategy was developed via gradient coating process of metallizing pastes with different ratios of Mo to manganese glass (MnG) contents, to improve the wettability and reactivity of metallized layer (ML) to the ceramic substrate and the secondary metallizing layer or sealed metals. Self-made HPAOC samples firstly coated by a layer of metallizing paste with a lower proportion of Mo:MnG and superposed a layer of metallizing paste with a higher proportion of Mo:MnG were fired at 1450°C in hydrogen atmosphere. The crystal phase structure, microstructure and element distribution of the metallized samples wer characterized by XRD, SEM and EDS. The results of sealing properties show that the tensile sealing strength of as high as 121MPa and the He leakage rate of as low as 4.2 × 10−11 Pa.m3/s can be obtained of the sealed joints of the as-metallized HPAOC and Kovar. |
| first_indexed | 2024-03-13T08:09:52Z |
| format | Article |
| id | doaj.art-d1817365977342d599e0b1e66bff1ef5 |
| institution | Directory Open Access Journal |
| issn | 2187-0764 |
| language | English |
| last_indexed | 2024-03-13T08:09:52Z |
| publishDate | 2023-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Asian Ceramic Societies |
| spelling | doaj.art-d1817365977342d599e0b1e66bff1ef52023-05-31T23:03:24ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642023-04-0111225025910.1080/21870764.2023.2195288High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing propertiesDongcai Li0Cangbao He1Yong Sheng Wang2Wei Su3Fengjun Zhang4Haiyan Xu5Anhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, PR, ChinaAnhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, PR, ChinaInstitute of Energy, Hefei Comprehensive National Science Center, Hefei, Anhui, ChinaAnhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, PR, ChinaAnhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, PR, ChinaAnhui Key Laboratory of Advanced Building Materials, Anhui Jianzhu University, Hefei, Anhui, PR, ChinaABSTRACTA high purity Al2O3 ceramic (HPAOC) metallizing strategy was developed via gradient coating process of metallizing pastes with different ratios of Mo to manganese glass (MnG) contents, to improve the wettability and reactivity of metallized layer (ML) to the ceramic substrate and the secondary metallizing layer or sealed metals. Self-made HPAOC samples firstly coated by a layer of metallizing paste with a lower proportion of Mo:MnG and superposed a layer of metallizing paste with a higher proportion of Mo:MnG were fired at 1450°C in hydrogen atmosphere. The crystal phase structure, microstructure and element distribution of the metallized samples wer characterized by XRD, SEM and EDS. The results of sealing properties show that the tensile sealing strength of as high as 121MPa and the He leakage rate of as low as 4.2 × 10−11 Pa.m3/s can be obtained of the sealed joints of the as-metallized HPAOC and Kovar.https://www.tandfonline.com/doi/10.1080/21870764.2023.2195288High purity Al2O3 ceramicManganese glassgradient coating processMetallizing，sealing |
| spellingShingle | Dongcai Li Cangbao He Yong Sheng Wang Wei Su Fengjun Zhang Haiyan Xu High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties Journal of Asian Ceramic Societies High purity Al2O3 ceramic Manganese glass gradient coating process Metallizing，sealing |
| title | High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties |
| title_full | High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties |
| title_fullStr | High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties |
| title_full_unstemmed | High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties |
| title_short | High purity Al2O3 ceramic:Metallizing strategy, microstructure and sealing properties |
| title_sort | high purity al2o3 ceramic metallizing strategy microstructure and sealing properties |
| topic | High purity Al2O3 ceramic Manganese glass gradient coating process Metallizing，sealing |
| url | https://www.tandfonline.com/doi/10.1080/21870764.2023.2195288 |
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