High-temperature oxidation and hot corrosion of Cr2AlC
High-temperature oxidation and hot corrosion behaviors of Cr2AlC were investigated at 800-1300 deg C in air. Thermogravimetric-differential scanning calorimetric test revealed that the starting oxidation temperature for Cr2AlC is about 800 deg C, which is 400 deg C higher than other ternary transiti...
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| Veröffentlicht in: | Acta materialia 2007-10, Vol.55 (18), p.6182-6191 |
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| creator | LIN, Z. J LI, M. S WANG, J. Y ZHOU, Y. C |
| description | High-temperature oxidation and hot corrosion behaviors of Cr2AlC were investigated at 800-1300 deg C in air. Thermogravimetric-differential scanning calorimetric test revealed that the starting oxidation temperature for Cr2AlC is about 800 deg C, which is 400 deg C higher than other ternary transition metal aluminum carbides. Thermogravimetric analyses demonstrated that Cr2AlC displayed excellent high-temperature oxidation resistance with parabolic rate constants of 1.08X10-12 and 2.96X10-9kg2m-4s-1 at 800 and 1300 deg C, respectively. Moreover, Cr2AlC exhibited exceptionally good hot corrosion resistance against molten Na2SO4 salt. The mechanism of the excellent high-temperature corrosion resistance for Cr2AlC can be attributed to the formation of a protective Al2O3-rich scale during both the high-temperature oxidation and hot corrosion processes. |
| doi_str_mv | 10.1016/j.actamat.2007.07.024 |
| format | Article |
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J ; LI, M. S ; WANG, J. Y ; ZHOU, Y. C</creator><creatorcontrib>LIN, Z. J ; LI, M. S ; WANG, J. Y ; ZHOU, Y. C</creatorcontrib><description>High-temperature oxidation and hot corrosion behaviors of Cr2AlC were investigated at 800-1300 deg C in air. Thermogravimetric-differential scanning calorimetric test revealed that the starting oxidation temperature for Cr2AlC is about 800 deg C, which is 400 deg C higher than other ternary transition metal aluminum carbides. Thermogravimetric analyses demonstrated that Cr2AlC displayed excellent high-temperature oxidation resistance with parabolic rate constants of 1.08X10-12 and 2.96X10-9kg2m-4s-1 at 800 and 1300 deg C, respectively. Moreover, Cr2AlC exhibited exceptionally good hot corrosion resistance against molten Na2SO4 salt. The mechanism of the excellent high-temperature corrosion resistance for Cr2AlC can be attributed to the formation of a protective Al2O3-rich scale during both the high-temperature oxidation and hot corrosion processes.</description><identifier>ISSN: 1359-6454</identifier><identifier>EISSN: 1873-2453</identifier><identifier>DOI: 10.1016/j.actamat.2007.07.024</identifier><language>eng</language><publisher>Oxford: Elsevier Science</publisher><subject>Applied sciences ; Corrosion ; Corrosion environments ; Exact sciences and technology ; Metals. 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The mechanism of the excellent high-temperature corrosion resistance for Cr2AlC can be attributed to the formation of a protective Al2O3-rich scale during both the high-temperature oxidation and hot corrosion processes.</description><subject>Applied sciences</subject><subject>Corrosion</subject><subject>Corrosion environments</subject><subject>Exact sciences and technology</subject><subject>Metals. 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Moreover, Cr2AlC exhibited exceptionally good hot corrosion resistance against molten Na2SO4 salt. The mechanism of the excellent high-temperature corrosion resistance for Cr2AlC can be attributed to the formation of a protective Al2O3-rich scale during both the high-temperature oxidation and hot corrosion processes.</abstract><cop>Oxford</cop><pub>Elsevier Science</pub><doi>10.1016/j.actamat.2007.07.024</doi><tpages>10</tpages></addata></record> |
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| ispartof | Acta materialia, 2007-10, Vol.55 (18), p.6182-6191 |
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| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Applied sciences Corrosion Corrosion environments Exact sciences and technology Metals. Metallurgy |
| title | High-temperature oxidation and hot corrosion of Cr2AlC |
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