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Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites
He, Ling-Feng1,2; Bao, Yi-Wang1; Zhou, Yan-Chun1
Corresponding AuthorZhou, Yan-Chun(yczhou@imr.ac.cn)
2009-11-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Volume92Issue:11Pages:2751-2758
AbstractZrO2-Al2O3 nanocrystalline powders have been synthesized by oxidizing ternary Zr2Al3C4 powders. The simultaneous oxidation of Al and Zr in Zr2Al3C4 results in homogeneous mixture of ZrO2 and Al2O3 at nanoscale. Bulk nano- and submicro-composites were prepared by hot-pressing as-oxidized powders at 1100 degrees-1500 degrees C. The composition and microstructure evolution during sintering was investigated by XRD, Raman spectroscopy, SEM, and TEM. The crystallite size of ZrO2 in the composites increased from 7.5 nm for as-oxidized powders to about 0.5 mu m at 1500 degrees C, while the tetragonal polymorph gradually converted to monolithic one with increasing crystallite size. The Al2O3 in the composites transformed from an amorphous phase in as oxidized powders to theta phase at 1100 degrees C and alpha phase at higher temperatures. The hardness of the composite increased from 2.0 GPa at 1100 degrees C to 13.5 GPa at 1400 degrees C due to the increase of density.
Funding OrganizationNational Outstanding Young Scientist Foundation ; Natural Science Foundation of China ; Chinese Academy of Sciences
DOI10.1111/j.1551-2916.2009.03281.x
Indexed BySCI
Language英语
Funding ProjectNational Outstanding Young Scientist Foundation[59925208] ; National Outstanding Young Scientist Foundation[50125204] ; Natural Science Foundation of China[90403027] ; Natural Science Foundation of China[50832008] ; Chinese Academy of Sciences
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
WOS IDWOS:000271188400042
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/99146
Collection中国科学院金属研究所
Corresponding AuthorZhou, Yan-Chun
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, Ling-Feng,Bao, Yi-Wang,Zhou, Yan-Chun. Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2009,92(11):2751-2758.
APA He, Ling-Feng,Bao, Yi-Wang,&Zhou, Yan-Chun.(2009).Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,92(11),2751-2758.
MLA He, Ling-Feng,et al."Zirconium Aluminum Carbides: New Precursors for Synthesizing ZrO2-Al2O3 Composites".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 92.11(2009):2751-2758.
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