Gao Yonggang, Yu Liya E, Chen Shing Bor
Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore 117576.
J Phys Chem A. 2007 Feb 1;111(4):633-9. doi: 10.1021/jp0654967.
A theoretical investigation is conducted for the first time to explore the deliquescence of particles deposited on a substrate. The formulation incorporates the Kelvin effect with the assumption that the dry and wet particles are both spherical caps in shape. Unlike the deposited particles larger than 500 nm, the deliquescence relative humidity (DRH) of smaller particles can substantially depend on the particle size, the contact angles, and the surface tension between the particle and the atmosphere. At certain contact angles, small particles depositing on a substrate could deliquesce at a much lower RH, posing a potential corrosion problem for metallic substrates.
首次进行了理论研究，以探究沉积在基材上的颗粒的潮解现象。该公式纳入了开尔文效应，并假设干燥和潮湿的颗粒均为球形帽状。与大于500纳米的沉积颗粒不同，较小颗粒的潮解相对湿度（DRH）可能会很大程度上取决于颗粒大小、接触角以及颗粒与大气之间的表面张力。在特定的接触角下，沉积在基材上的小颗粒可能在低得多的相对湿度下潮解，这对金属基材构成潜在的腐蚀问题。
