The critical role of Si doping in enhancing the stability of M6C carbides
文献类型：期刊论文
| 作者 | Jiang, L; Ye, XX; Wang, ZQ; Yu, C; Dong, JS; Xie, RB; Li, ZJ; Yan, L; Sham, TK; Zhou, XT |
| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| 出版日期 | 2017 |
| 卷号 | 728期号:-页码:917-926 |
| 关键词 | High-speed Steels Oxygen Reduction Reaction Term Thermal Exposure Mo-cr Superalloy Mechanical-properties Fuel-cells Silicon Ni Catalyst Fe |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2017.09.042 |
| 文献子类 | 期刊论文 |
| 英文摘要 | M6C carbides are one of the most common second phases in high speed steels and superalloys, and also an alternative catalytic materials for energy applications. Although the influences of Si doping on the stability of M6C carbides have been frequently observed in different alloys, the atomic-scale mechanism of which remains poorly understood. Here we obtain the Ni3Mo3C-type M6C carbides in GH3535 alloys and evaluate the dependence of their structure and composition on Si contents. Combining high-energy synchrotron X-ray diffraction and first-principle calculations, Si atoms are found to preferentially occupy Ni (16d) sites in Ni3Mo3C structure. The electronic structures and Si K-edge x-ray absorption near edge structures demonstrate the band hybridization and charge transfer between Si atoms and the nearest-neighbor Ni (32e) and Mo (48f) atoms in Si-doped Ni3Mo3C structures, which is responsible for the stability of M6C carbides. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | HIGH-SPEED STEELS ; OXYGEN REDUCTION REACTION ; TERM THERMAL EXPOSURE ; MO-CR SUPERALLOY ; MECHANICAL-PROPERTIES ; FUEL-CELLS ; SILICON ; NI ; CATALYST ; FE |
| 语种 | 英语 |
| WOS记录号 | WOS:000412818600107 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/28857]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Jiang, L,Ye, XX,Wang, ZQ,et al. The critical role of Si doping in enhancing the stability of M6C carbides[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,728(-):917-926. |
| APA | Jiang, L.,Ye, XX.,Wang, ZQ.,Yu, C.,Dong, JS.,...&Li, AM.(2017).The critical role of Si doping in enhancing the stability of M6C carbides.JOURNAL OF ALLOYS AND COMPOUNDS,728(-),917-926. |
| MLA | Jiang, L,et al."The critical role of Si doping in enhancing the stability of M6C carbides".JOURNAL OF ALLOYS AND COMPOUNDS 728.-(2017):917-926. |
入库方式： OAI收割
来源：上海应用物理研究所
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