A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature
The role of pore microstructures on the susceptibility of MAX phases (Ti3SiC2, Ti3AlC2, Ti2AlC, Ti2AlN2, Ti4AlN3) to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g. TiCx) or binary ni...
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| Other Authors: | |
| Format: | Conference Paper |
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Wiley
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/44695 |
| _version_ | 1848757075401768960 |
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| author | Low, It Meng Pang, Wei |
| author2 | Dongming Zhu |
| author_facet | Dongming Zhu Low, It Meng Pang, Wei |
| author_sort | Low, It Meng |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The role of pore microstructures on the susceptibility of MAX phases (Ti3SiC2, Ti3AlC2, Ti2AlC, Ti2AlN2, Ti4AlN3) to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g. TiCx) or binary nitride (e.g. TiNx), primarily through the sublimation of Aelements such as Al or Si, forming in a porous surface layer of MXx. Positive activation energies were determined for decomposed MAX phases with coarse pores but a negative activation energy when the pore size was less than 1.0 µm. The role of pore microstructures on the decomposition kinetics is discussed. |
| first_indexed | 2025-11-14T09:22:20Z |
| format | Conference Paper |
| id | curtin-20.500.11937-44695 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:22:20Z |
| publishDate | 2012 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-446952023-02-07T08:01:22Z A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature Low, It Meng Pang, Wei Dongming Zhu Hua-Tay Lin Yanchun Zhou Taejin Huang The role of pore microstructures on the susceptibility of MAX phases (Ti3SiC2, Ti3AlC2, Ti2AlC, Ti2AlN2, Ti4AlN3) to thermal dissociation at 1300-1550 °C in high vacuum has been studied using in-situ neutron diffraction. Above 1400 °C, MAX phases decomposed to binary carbide (e.g. TiCx) or binary nitride (e.g. TiNx), primarily through the sublimation of Aelements such as Al or Si, forming in a porous surface layer of MXx. Positive activation energies were determined for decomposed MAX phases with coarse pores but a negative activation energy when the pore size was less than 1.0 µm. The role of pore microstructures on the decomposition kinetics is discussed. 2012 Conference Paper http://hdl.handle.net/20.500.11937/44695 Wiley restricted |
| spellingShingle | Low, It Meng Pang, Wei A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title | A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title_full | A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title_fullStr | A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title_full_unstemmed | A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title_short | A Comparative Study of Decomposition Kinetics in MAX Phases at Elevated Temperature |
| title_sort | comparative study of decomposition kinetics in max phases at elevated temperature |
| url | http://hdl.handle.net/20.500.11937/44695 |