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一、盐水试验提出的依据二、盐水试验的控制条件三、盐水试验的腐蚀机理1、涂料膜层的水气透过性2、膜层的水汽渗透速率盐水试验在涂层孔隙内紧贴膜层的液相界面,一开始就处于不平衡状态。这是由于电位梯度、离子浓度梯度、离子活度梯度和溶液浓度梯度及其变化等因素,所产生的化学电池的物理化学和电化学反应,这些反应就是使膜层改变性质的原因。
First, the salt water test based on the second, the control conditions of the brine test Third, the corrosion mechanism of the brine test 1, the water vapor permeability of the coating layer 2, the water vapor permeability of the membrane brine test in the coating pore close to the film The liquid interface, the beginning is in an unbalanced state. This is due to the potential chemical, electrochemical and electrochemical reactions that result from factors such as potential gradients, ion concentration gradients, ion activity gradients, and solution concentration gradients and their changes. These reactions are responsible for the changing nature of the film.