Corrosion behavior of high-level waste container materials Ti and Ti–Pd alloy under long-term gamma irradiation in Beishan groundwater
文献类型：CNKI期刊论文
| 作者 | Wei QL(魏强林); Li YH(李玉红); Huang YL(黄彦良); Yang DY(杨冬燕); Yang B(杨波); Liu YB(刘义保) |
| 发表日期 | 2021-05-15 |
| 出处 | Chinese Physics B
 |
| 关键词 | γ-irradiation corrosion high-level waste container material |
| 英文摘要 | Titanium and titanium–palladium alloys are important potential materials for nuclear waste container, which will endure both intense γ-irradiation and groundwater erosion. Therefore, it is very important to investigate the corrosion behavior of the container materials. In this research, the cumulative dose effect of TA8-1 type titanium–palladium alloy(TA8-1) and TA2-type pure titanium(TA2) under γ-irradiation was studied based on the geological disposal of nuclear wastes. The irradiation experiments were performed at room temperature using60 Co gamma sources with a 5.0-k Gy·h-1 intensity for 40, 80 or 160 days, respectively. The p H value and conductivity of Beishan groundwater were investigated.The results showed that the p H value changed from alkaline(8.22) to acidic(2.46 for TA8-1 and 2.44 for TA2), while the un-irradiated solution remained alkaline(8.17 for TA8-1 and 8.20 for TA2) after 160 days. With the increase of irradiation dose, the conductivity increases rapidly and then tends to become stable, which indicates that the titanium dioxide corrosion layer formed on the surface of the sample surface effectively prevents further corrosion. Meanwhile, XRD and SEM–EDS analysis results show that the main components of corrosion products are Ti O_2 and Ti O. The titanium on the surface of the sample is oxidized, resulting in slight uneven local corrosion. The results show that TA8-1 and TA2 are suitable to be used as candidate materials for high-level waste(HLW) disposal containers due to their excellent performance under long-term and high-dose irradiation corrosion. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Project supported by the National Natural Science Foundation of China (Grant Nos. 51471160, 11775102, and 11965001) ; the Fundamental Research Funds for the Central Universities,China (Lanzhou University, Grant No. lzujbky-2018-19) |
| 卷 | v.30期:05页:483-490 |
| 语种 | 英文; |
| 分类号 | TG174.3;TL942 |
| ISSN号 | 1674-1056 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/187773]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.SchoolofNuclearScienceandTechnology,LanzhouUniversity 2.InstituteofOceanology,ChineseAcademyofSciences 3.StateKeyLaboratoryofNuclearResourcesandEnvironment,EastChinaUniversityofTechnology |
| 推荐引用方式 GB/T 7714 | Wei QL,Li YH,Huang YL,et al. Corrosion behavior of high-level waste container materials Ti and Ti–Pd alloy under long-term gamma irradiation in Beishan groundwater. 2021. |
入库方式： OAI收割
来源：海洋研究所
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