| 大气中无机盐粒水解过程中的微液滴现象 |
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| 引用本文： | 张际标,王佳,王燕华.大气中无机盐粒水解过程中的微液滴现象[J].物理化学学报,2005,21(9):993-996. |
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| 作者姓名： | 张际标 王佳 王燕华 |
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| 作者单位： | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071； 2Graduate School of the Chinese Academy of Sciences, Beijing 100049； Zhanjiang Ocean University, Zhanjiang 524088； Ocean University of China, Qingdao 266003； State Key Laboratory for Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110016 |
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| 基金项目： | 国家自然科学基金重大项目(50499336-2)资助~~ |
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| 摘 要： | 采用改变相对湿度, 无机盐/金属组合, 测定微液滴体系的pH值和电位分布等方法研究了微液滴形成和生长的特征. 结果表明, 微液滴的形成与大气腐蚀密切相关. 微液滴只在特定的盐粒/金属体系中出现, 微液滴区域具有较高的pH值和较高的电位分布. 此外, 微液滴形成和生长需要两个前提条件：第一, 环境相对湿度应高于盐粒水解液滴液面的饱和蒸汽压；第二, 在水解液滴下的金属能被液滴腐蚀.
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| 关 键 词： | 微液滴 相对湿度 电位分布 大气腐蚀 |
| 收稿时间： | 2005-01-13 |
| 修稿时间： | 2005-03-15 |
Phenomenon of Micro-droplets Formation on Metals during the Deliquescence of Salt Particles in Atmosphere |
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| ZHANG,Ji-Biao,WANG,Jia,WANG,Yan-Hua.Phenomenon of Micro-droplets Formation on Metals during the Deliquescence of Salt Particles in Atmosphere[J].Acta Physico-Chimica Sinica,2005,21(9):993-996. |
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| Authors: | ZHANG Ji-Biao WANG Jia WANG Yan-Hua |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071； 2Graduate School of the Chinese Academy of Sciences, Beijing 100049； Zhanjiang Ocean University, Zhanjiang 524088； Ocean University of China, Qingdao 266003； State Key Laboratory for Corrosion and Protection of Metals, Chinese Academy of Sciences, Shenyang 110016 |
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| Abstract: | The characteristics of the formation of micro-droplets were investigated in a humidity-controlled chamber. The results showed that the micro-droplets formation had a close relation with the atmospheric corrosion of metal based on the pH and potential distributions of micro-droplets. Micro-droplets could only appear on high potential area in a corrosive combination of metals and salt particles. Meanwhile, a high value of pH was found in the areas covered with micro-droplets. The formation of micro-droplets needed two premises, one was that the relative humidity should be over the saturated relative humidity of main-droplet, the other was that the metal substrate could be eroded under the main-droplet. |
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| Keywords: | Micro-droplets Relative humidity Potential distribution Atmospheric corrosion |
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