Ga-based liquid metal: lubrication and corrosion behaviors at a wide temperature range | |
Department | 固体润滑国家重点实验室 |
Guo Jie(郭杰)1,2; Cheng J(程军)1; Tan H(谈辉)1; Zhu SY(朱圣宇)1; Qiao ZH(乔竹辉)1; Yang J(杨军)1; Liu WM(刘维民)1 | |
2018 | |
Source Publication | Materialia |
Issue | 4Pages:暂无10-19 |
Abstract | Novel Ga-based liquid metal (GLM) may be a promising coolant and lubricant in the advanced liquid-metal nuclear reactor, due to its excellent physicochemical properties. But the lubrication and corrosion behaviors of GLM over a wide temperature range are unclear, which are vital to the service safety of the nuclear reactor. In this work, a high-temperature T91 steel was chosen to slide against Al2O3 ball in GLM medium and vacuum atmosphere from room temperature (RT) to 800 °C, to clarify this issue. It was found that liquid-metal will decompose and form a Ga-rich film on the contact interface and thus can provide good boundary lubrication at RT and 200 ºC. At 400 ºC, a Ga-rich film also exists and the steel begins to react with GLM to form nano-FeGa3 crystal, providing the synergistic lubricating effect. At 600 and 800 ºC, GLM corrodes severely the T91 steel and various polymetallic intermetallics are formed, counteracting the lubricity of GLM. In addition, the distinct corrosion mechanisms of GLM on the T91 steel at 600 and 800 °C were preliminary studied and proposed, namely, inside-out growth at 600 °C and outside-in dissolution corrosion at 800 °C. |
Keyword | Ga-based Liquid Metal Wear Mechanisms Corrosion Temperature Dependence Intermetallics |
If | 暂无 |
Language | 英语 |
compositor | 第一作者单位 |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/24240 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Cheng J(程军); Yang J(杨军) |
Affiliation | 1.State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences 2.University of Chinese Academy of Sciences |
Recommended Citation GB/T 7714 | Guo Jie,Cheng J,Tan H,et al. Ga-based liquid metal: lubrication and corrosion behaviors at a wide temperature range[J]. Materialia,2018(4):暂无10-19. |
APA | Guo Jie.,Cheng J.,Tan H.,Zhu SY.,Qiao ZH.,...&Liu WM.(2018).Ga-based liquid metal: lubrication and corrosion behaviors at a wide temperature range.Materialia(4),暂无10-19. |
MLA | Guo Jie,et al."Ga-based liquid metal: lubrication and corrosion behaviors at a wide temperature range".Materialia .4(2018):暂无10-19. |
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1-s2.0-S258915291830(5945KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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