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Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 degrees C in air
He, L. F.1,2; Lin, Z. J.1,2; Bao, Y. W.1; Li, M. S.1; Wang, J. Y.1; Zhou, Y. C.1
Corresponding AuthorZhou, Y. C.(yczhou@imr.ac.cn)
2008-02-01
Source PublicationJOURNAL OF MATERIALS RESEARCH
ISSN0884-2914
Volume23Issue:2Pages:359-366
AbstractThe isothermal oxidation behavior of Zr2Al3C4 in the temperature range of 500 to 1000 inverted perpendicular C for 20 h in air has been investigated. The oxidation kinetics follow a parabolic law at 600 to 800 degrees C and a linear law at higher temperatures. The activation energy is determined to be 167.4 and 201.2 kJ/mol at parabolic and linear stages, respectively. The oxide scales have a monolayer structure, which is a mixture of ZrO2 and Al2O3. As indicated by x-ray diffraction and Raman spectra, the scales formed at 500 to 700 degrees C are amorphous, and at higher temperatures are alpha-Al2O3, and t-ZrO2 nanocrystallites. The nonselective oxidation of Zr2Al3C4 can be attributed to the strong coupling between Al3C2 units and ZrC blocks in its structure, and the close oxygen affinity of Zr and Al.
DOI10.1557/JMR.2008.0042
Indexed BySCI
Language英语
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000253010800010
PublisherCAMBRIDGE UNIV PRESS
Citation statistics
Cited Times:32[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/92737
Collection中国科学院金属研究所
Corresponding AuthorZhou, Y. C.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
He, L. F.,Lin, Z. J.,Bao, Y. W.,et al. Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 degrees C in air[J]. JOURNAL OF MATERIALS RESEARCH,2008,23(2):359-366.
APA He, L. F.,Lin, Z. J.,Bao, Y. W.,Li, M. S.,Wang, J. Y.,&Zhou, Y. C..(2008).Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 degrees C in air.JOURNAL OF MATERIALS RESEARCH,23(2),359-366.
MLA He, L. F.,et al."Isothermal oxidation of bulk Zr2Al3C4 at 500 to 1000 degrees C in air".JOURNAL OF MATERIALS RESEARCH 23.2(2008):359-366.
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