| Atomic-scale microstructure of Hf2Al4C5 ceramic synthesized by spark plasma sintering | |
| Song, Kepeng; Zhang, Hui; Du, Kui; Qi, Dongqing; Chen, Houwen; Wang, Xiaohui; Nie, Jian-Feng; Ye, Hengqiang; Du, K (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China. | |
| 2017-07-01 | |
| Source Publication | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| ISSN | 0002-7820 |
| Volume | 100Issue:7Pages:3208-3216 |
| Abstract | A layered ternary carbide phase, Hf2Al4C5, was successfully synthesized by spark plasma sintering method. Detailed (atomic-scale) microstructure of the ternary carbide was investigated by aberration-corrected scanning transmission electron microscopy and atomic-resolution energy dispersive X-ray spectroscopy. Hf2Al4C5 crystal grains have elongated morphologies and are characterized with a high density of stacking faults with the insertion of additional (Al4C3) or (HfC) units. Periodic stacking of Hf2Al4C5 and HfAl4C4 units along the [0001] direction is frequently observed in the Hf2Al4C5 crystal, and it leads to the formation of Hf4Al12C13, which consists of 2/3 Hf2Al4C5 unit cell and 1/2 HfAl4C4 unit cell. In addition, Z-shaped planar defects are observed in Hf2Al4C5 grains, and the formation mechanism of the Z-shaped defects was proposed as blocking effects of the Hf diffusion in Al4C3 by pre-existing {1-101} pyramidal stacking faults in Al4C3. |
| description.department | [song, kepeng ; zhang, hui ; du, kui ; qi, dongqing ; wang, xiaohui ; ye, hengqiang] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang, peoples r china ; [qi, dongqing] northeastern univ, sch mat sci & engn, shenyang, peoples r china ; [chen, houwen ; nie, jian-feng] chongqing univ, sch mat sci & engn, chongqing, peoples r china ; [nie, jian-feng] monash univ, dept mat sci & engn, melbourne, vic, australia |
| Keyword | Microstructure Spark Plasma Sintering Stacking Fault Transition Metal Ternary Compounds Transmission Electron Microscopy |
| Subject Area | Materials Science, Ceramics |
| Funding Organization | National Natural Science Foundation of China [51371177, 51521091, 51390473] |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000404730100048 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/78061 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Du, K (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang, Peoples R China. |
| Recommended Citation GB/T 7714 | Song, Kepeng,Zhang, Hui,Du, Kui,et al. Atomic-scale microstructure of Hf2Al4C5 ceramic synthesized by spark plasma sintering[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2017,100(7):3208-3216. |
| APA | Song, Kepeng.,Zhang, Hui.,Du, Kui.,Qi, Dongqing.,Chen, Houwen.,...&Du, K .(2017).Atomic-scale microstructure of Hf2Al4C5 ceramic synthesized by spark plasma sintering.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,100(7),3208-3216. |
| MLA | Song, Kepeng,et al."Atomic-scale microstructure of Hf2Al4C5 ceramic synthesized by spark plasma sintering".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 100.7(2017):3208-3216. |
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