从物理过程分析镀层不同金属含量对金属化膜自愈能量的影响

Analysis on Influence of Different Metal Contents of Coating Layer on Self⁃healing Energy ofMetallized Film From Physical Process

本文从物理过程的角度,分析锌铝金属化膜中镀层锌铝含量对自愈能量的影响。把自愈过程转换成镀层材料的升华过程,通过固液气形态转换所需的能量,分析得到了在镀层厚度不变的情况下,铝锌膜需要的自愈能量随着铝含量增加而增加,随着锌含量的增加而减小;在镀层厚度一样的情况下,纯铝膜和纯锌膜所需要的自愈能量相差55.5%;通过推导,得到了在方阻一定的情况下,金属化膜所需要的自愈能量与其不同金属含量的变化规律,与镀层厚度不变的规律一致。在方阻一定的情况下,纯锌膜和纯铝膜的自愈能量只相差15.2%,比镀层厚度不变的情况下小得多。

In this paper,the influence of the coated zinc and aluminium content of coating of zinc and alu-minum metallized film on the self-healing energy is analyzed from the point of view of physical process.The self-healing process is transformed into sublimation process of the coating material,and the energy required is by the solid-liquid-gas form transformation is analyzed.The self-healing energy required by the aluminium-zinc film increases with the increase of aluminum content and decreases with the increase of zinc content under the condition that the thickness of the coating remains unchanged.In case of same coating thickness,the difference of self-healing energy between pure aluminum and pure zinc film is 55.5%.It is obtained through derivation that,under a certain square resistance,the self-healing energy required by the metal-lized film varies with its metal content,which is consistent with the constant thickness of the coating.In case of a definite square resistance,the difference of self-healing energy between pure zinc and aluminum film is only 15.2%,which is much smaller than that when the coating thickness is unchanged.