Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| Effect of Cr contents on the diffusion behavior of Te in Ni-based alloy | |
| Jia, YY; Li, ZF; Ye, XX; Liu, RD; Leng, B; Qiu, J; Liu, M; Li, ZJ | |
| 2017 | |
| Source Publication | JOURNAL OF NUCLEAR MATERIALS
 |
| ISSN | 0022-3115 |
| Volume | 497Issue:-Pages:101-106 |
| Subtype | 期刊论文 |
| Abstract | The embrittlement of Ni-based structural alloys caused by fission production Te is one of the major challenges for molten salt reactors. It has been reported that solution element Cr can prevent the situation of intergranular cracks caused by Te. However, there is no detailed mechanism explanation on this phenomenon. In this study, the effect of Cr on Te diffusion in Ni-Cr binary system was investigated by diffusion experiments at 800 degrees C for 100 h. Results show that Te reacts with the alloy mainly forming Ni3Te2 , and strip shaped Cr3Te4 is only found on the surface of Ni-15%Cr alloy. According to the discussion of thermodynamic chemical reaction process, Cr3Te4 exhibits the best stability and preferential formation compound in Te/Ni-Cr system as its Gibbs free energy of formation is the lowest. With the increase of Cr content in the alloy, the diffusion depth of Te along grain boundaries significantly decreases. Moreover, the formation process of reaction product and diffusion process are described. The diffusion of Te can be suppressed by high content of Cr in Ni-Cr alloy due to the formation of Cr3Te4 and thus the grain boundary is protected from Te corroding. (C) 2017 Elsevier B.V. All rights reserved. |
| Keyword | Molten-salt Reactor Tellurium Corrosion Nickel Superalloy Chemistry |
| DOI | 10.1016/j.jnucmat.2017.10.062 |
| WOS Keyword | MOLTEN-SALT REACTOR ; TELLURIUM ; CORROSION ; NICKEL ; SUPERALLOY ; CHEMISTRY |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000415718800011 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/28623 |
| Collection | 中科院上海应用物理研究所2011-2018年 |
| Recommended Citation GB/T 7714 | Jia, YY,Li, ZF,Ye, XX,et al. Effect of Cr contents on the diffusion behavior of Te in Ni-based alloy[J]. JOURNAL OF NUCLEAR MATERIALS,2017,497(-):101-106. |
| APA | Jia, YY.,Li, ZF.,Ye, XX.,Liu, RD.,Leng, B.,...&Li, ZJ.(2017).Effect of Cr contents on the diffusion behavior of Te in Ni-based alloy.JOURNAL OF NUCLEAR MATERIALS,497(-),101-106. |
| MLA | Jia, YY,et al."Effect of Cr contents on the diffusion behavior of Te in Ni-based alloy".JOURNAL OF NUCLEAR MATERIALS 497.-(2017):101-106. |
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| Effect of Cr content（1930KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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