A multi-functional polymer coating that is heat-resistant, hydrophobic and transparent
文献类型：期刊论文
| 作者 | Zhao, Tianyi; Zhang, Dongmei; Ding, Chunmei; Zhou, Jinglun; Zhu, Jinsong; Jiang, Lei |
| 刊名 | PARTICUOLOGY
 |
| 出版日期 | 2014-12-01 |
| 卷号 | 17页码:11-14 |
| 英文摘要 | Ion exchange is recognized as an integral, if underrepresented, mechanism influencing glass corrosion. However, due to the formation of various alteration layers in the presence of water during the corrosion process, it is difficult to conclusively deconvolute the mechanisms of ion exchange from other simultaneously occurring processes. In this work, an inert non-aqueous solution was used as an alkali source material to isolate ion exchange and study the solid-state diffusion of lithium. Specifically, the experiments involved contacting simulated nuclear waste glass coupons, the 6-oxide CJ6 and the 26-oxide SON68, with a non-aqueous solution of (LiCl)-Li-6 dissolved in dimethyl sulfoxide at 90 degrees C for various time periods. The depth profiles of major elements in the glass coupons were measured using time-of-flight secondary ion mass spectrometry (ToF-SIMS). Lithium interdiffusion coefficients, D-Li, were then calculated based on the measured depth profiles. The results indicate that the penetration of Li-6 is faster in the simplified CJ6 (D-6Li approximate to 4.0-8.0 x 10(-21) m(2)/s) compared to the more complex SON68 (D-6Li approximate to 2.0-4.0 x 10(-21) m(2)/s). These values are roughly an order of magnitude greater than measured water diffusion in glasses at similar temperatures. Additionally, sodium ions present in the glass were observed to participate in ion exchange reactions with lithium from the solution. Implications of the diffusion coefficients obtained in the absence of alteration layers to the long-term performance of nuclear waste glasses in a geological repository system are also discussed. (C) 2014 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/38598]  |
| 专题 | 化学研究所_其它 |
| 推荐引用方式 GB/T 7714 | Zhao, Tianyi,Zhang, Dongmei,Ding, Chunmei,et al. A multi-functional polymer coating that is heat-resistant, hydrophobic and transparent[J]. PARTICUOLOGY,2014,17:11-14. |
| APA | Zhao, Tianyi,Zhang, Dongmei,Ding, Chunmei,Zhou, Jinglun,Zhu, Jinsong,&Jiang, Lei.(2014).A multi-functional polymer coating that is heat-resistant, hydrophobic and transparent.PARTICUOLOGY,17,11-14. |
| MLA | Zhao, Tianyi,et al."A multi-functional polymer coating that is heat-resistant, hydrophobic and transparent".PARTICUOLOGY 17(2014):11-14. |
入库方式： OAI收割
来源：化学研究所
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