Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress
ZrB2 based ultra-high temperature ceramic (UHTC) is one of the most promising materials for thermal protection systems. This paper focuses on the oxidation behaviors of ZrB2 under compressive stress. ZrB2 UHTC is fabricated with nano-sized powders at 1500 °C, which is a relative low temperature. Nan...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier Science Ltd
2019
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| Online Access: | http://hdl.handle.net/20.500.11937/74161 |
| _version_ | 1848763196967485440 |
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| author | Jin, X. Li, P. Hou, C. Wang, X. Fan, X. Lu, Chunsheng Xiao, G. Shu, X. |
| author_facet | Jin, X. Li, P. Hou, C. Wang, X. Fan, X. Lu, Chunsheng Xiao, G. Shu, X. |
| author_sort | Jin, X. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | ZrB2 based ultra-high temperature ceramic (UHTC) is one of the most promising materials for thermal protection systems. This paper focuses on the oxidation behaviors of ZrB2 under compressive stress. ZrB2 UHTC is fabricated with nano-sized powders at 1500 °C, which is a relative low temperature. Nanoindentation tests are conducted to measure the basic mechanical properties of sintered samples. Results of nanoindentation show that ZrB2 is prepared with good mechanical properties. Oxidation tests are performed under different stress states and temperatures, and oxidation mechanisms and microstructure evolution are discussed. As the oxidation proceeds, ZrO2 grains grow slowly at 1000 °C, but fast at 1200 °C. When oxidized over 1400 °C, ZrO2 grains fuse and micro-sized pores form on the surface due to the release of gaseous oxidation products. The thickness of oxide layer on the samples almost keeps unchanged under various compressive loads. Compared with the stress state, microstructure has a more obvious effect on the oxidation rate. The results in this paper provide a better understanding on the oxidation mechanism of ZrB2 based UHTCs. |
| first_indexed | 2025-11-14T10:59:38Z |
| format | Journal Article |
| id | curtin-20.500.11937-74161 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:59:38Z |
| publishDate | 2019 |
| publisher | Elsevier Science Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-741612019-09-02T08:10:29Z Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress Jin, X. Li, P. Hou, C. Wang, X. Fan, X. Lu, Chunsheng Xiao, G. Shu, X. ZrB2 based ultra-high temperature ceramic (UHTC) is one of the most promising materials for thermal protection systems. This paper focuses on the oxidation behaviors of ZrB2 under compressive stress. ZrB2 UHTC is fabricated with nano-sized powders at 1500 °C, which is a relative low temperature. Nanoindentation tests are conducted to measure the basic mechanical properties of sintered samples. Results of nanoindentation show that ZrB2 is prepared with good mechanical properties. Oxidation tests are performed under different stress states and temperatures, and oxidation mechanisms and microstructure evolution are discussed. As the oxidation proceeds, ZrO2 grains grow slowly at 1000 °C, but fast at 1200 °C. When oxidized over 1400 °C, ZrO2 grains fuse and micro-sized pores form on the surface due to the release of gaseous oxidation products. The thickness of oxide layer on the samples almost keeps unchanged under various compressive loads. Compared with the stress state, microstructure has a more obvious effect on the oxidation rate. The results in this paper provide a better understanding on the oxidation mechanism of ZrB2 based UHTCs. 2019 Journal Article http://hdl.handle.net/20.500.11937/74161 10.1016/j.ceramint.2019.01.009 Elsevier Science Ltd restricted |
| spellingShingle | Jin, X. Li, P. Hou, C. Wang, X. Fan, X. Lu, Chunsheng Xiao, G. Shu, X. Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title | Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title_full | Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title_fullStr | Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title_full_unstemmed | Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title_short | Oxidation behaviors of ZrB2 based ultra-high temperature ceramics under compressive stress |
| title_sort | oxidation behaviors of zrb2 based ultra-high temperature ceramics under compressive stress |
| url | http://hdl.handle.net/20.500.11937/74161 |