Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique
An innovative two-step approach of self-propagating high-temperature synthesis (SHS) and spark plasma sintering (SPS) was developed to rapidly fabricate MoSi2 and Mo(Al,Si)2 ceramics for high-temperature anti-oxidation applications. The SHS process predominantly promoted the synthesis of high-purity...
Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-11-01
|
| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S026412752400772X |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850137676400820224 |
|---|---|
| author | Nana Zhu Lu Zhu Baojing Zhang Peizhong Feng Shiheng Li Philipp V. Kiryukhantsev-Korneev Evgeny A. Levashov Xuanru Ren Xiaohong Wang |
| author_facet | Nana Zhu Lu Zhu Baojing Zhang Peizhong Feng Shiheng Li Philipp V. Kiryukhantsev-Korneev Evgeny A. Levashov Xuanru Ren Xiaohong Wang |
| author_sort | Nana Zhu |
| collection | DOAJ |
| description | An innovative two-step approach of self-propagating high-temperature synthesis (SHS) and spark plasma sintering (SPS) was developed to rapidly fabricate MoSi2 and Mo(Al,Si)2 ceramics for high-temperature anti-oxidation applications. The SHS process predominantly promoted the synthesis of high-purity and high-yield MoSi2 and Mo(Si,Al)2 phases in the alloyed powders. Subsequently, dense and crack-free MoSi2 and Mo(Al,Si)2 ceramics were produced using SPS. 1500 °C oxidation tests of the ceramics (100 h) revealed the formation of a protective SiO2 oxide layer on the surface of MoSi2 ceramics, while an Al-Si-O composite glassy oxide layer formed on Mo(Si,Al)2 ceramics, which exhibited better thermal stability and lower oxygen permeability compared to the single SiO2 oxide layer. However, an excessive Al content (>0.05 at.%) compromised the oxidation resistance due to the emergence of a Si-depleted Mo5(Si,Al)3 layer with inferior oxidation resistance, which was caused by the high-temperature diffusion of Si. Therefore, via this novel two-step SHS-SPS technique compact and crack-free Mo(Si,Al)2 ceramics can be rapidly synthesized at high temperatures. When trace amount of Al was added (0.05 at.%), Mo(Si0.95Al0.05)2 showed optimum high-temperature oxidation resistance. |
| format | Article |
| id | doaj-art-18f13bf6ca3a42439d567bb38146d842 |
| institution | OA Journals |
| issn | 0264-1275 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj-art-18f13bf6ca3a42439d567bb38146d8422025-08-20T02:30:46ZengElsevierMaterials & Design0264-12752024-11-0124711339710.1016/j.matdes.2024.113397Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS techniqueNana Zhu0Lu Zhu1Baojing Zhang2Peizhong Feng3Shiheng Li4Philipp V. Kiryukhantsev-Korneev5Evgeny A. Levashov6Xuanru Ren7Xiaohong Wang8School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, ChinaDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong 999077, ChinaSchool of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Corresponding authors.School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Corresponding authors.School of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, ChinaNational University of Science and Technology “MISIS”, Leninsky Prospect, 4, Moscow 119049, RussiaNational University of Science and Technology “MISIS”, Leninsky Prospect, 4, Moscow 119049, RussiaHenan Key Laboratory of High Performance Carbon Fiber Reinforced Composites, Institute of Carbon Matrix Composites, Henan Academy of Sciences, Zhengzhou 450046, ChinaSchool of Materials Science and Physics, China University of Mining and Technology, Xuzhou 221116, China; Corresponding authors.An innovative two-step approach of self-propagating high-temperature synthesis (SHS) and spark plasma sintering (SPS) was developed to rapidly fabricate MoSi2 and Mo(Al,Si)2 ceramics for high-temperature anti-oxidation applications. The SHS process predominantly promoted the synthesis of high-purity and high-yield MoSi2 and Mo(Si,Al)2 phases in the alloyed powders. Subsequently, dense and crack-free MoSi2 and Mo(Al,Si)2 ceramics were produced using SPS. 1500 °C oxidation tests of the ceramics (100 h) revealed the formation of a protective SiO2 oxide layer on the surface of MoSi2 ceramics, while an Al-Si-O composite glassy oxide layer formed on Mo(Si,Al)2 ceramics, which exhibited better thermal stability and lower oxygen permeability compared to the single SiO2 oxide layer. However, an excessive Al content (>0.05 at.%) compromised the oxidation resistance due to the emergence of a Si-depleted Mo5(Si,Al)3 layer with inferior oxidation resistance, which was caused by the high-temperature diffusion of Si. Therefore, via this novel two-step SHS-SPS technique compact and crack-free Mo(Si,Al)2 ceramics can be rapidly synthesized at high temperatures. When trace amount of Al was added (0.05 at.%), Mo(Si0.95Al0.05)2 showed optimum high-temperature oxidation resistance.http://www.sciencedirect.com/science/article/pii/S026412752400772XTwo-step techniqueMoSi2Al-alloyed ceramicsMicrostructural evolutionHigh-temperature oxidation |
| spellingShingle | Nana Zhu Lu Zhu Baojing Zhang Peizhong Feng Shiheng Li Philipp V. Kiryukhantsev-Korneev Evgeny A. Levashov Xuanru Ren Xiaohong Wang Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique Materials & Design Two-step technique MoSi2 Al-alloyed ceramics Microstructural evolution High-temperature oxidation |
| title | Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique |
| title_full | Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique |
| title_fullStr | Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique |
| title_full_unstemmed | Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique |
| title_short | Microstructural evolution and 1500 °C oxidation resistance of Mo(Al,Si)2 fabricated via an innovative two-step SHS-SPS technique |
| title_sort | microstructural evolution and 1500 °c oxidation resistance of mo al si 2 fabricated via an innovative two step shs sps technique |
| topic | Two-step technique MoSi2 Al-alloyed ceramics Microstructural evolution High-temperature oxidation |
| url | http://www.sciencedirect.com/science/article/pii/S026412752400772X |
| work_keys_str_mv | AT nanazhu microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT luzhu microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT baojingzhang microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT peizhongfeng microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT shihengli microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT philippvkiryukhantsevkorneev microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT evgenyalevashov microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT xuanruren microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique AT xiaohongwang microstructuralevolutionand1500coxidationresistanceofmoalsi2fabricatedviaaninnovativetwostepshsspstechnique |