| 摘要 |
<p>The present invention concerns a zinc whiskerless galvanized product having multi-layer rust prevention film presenting an excellent rust prevention, self-repair ability, and coating adhesion, a composition for forming multi-layer rust prevention film, and a manufacturing method of zinc whiskerless galvanized product having multi-layer rust prevention film using the same. As the galvanized product of the present invention is a galvanized product, wherein a galvanized film preventing completely the generation of zinc whisker is formed on the surface of a metal substrate, and a multi-layer rust prevention film presenting not only rust prevention as excellent as the case of sexivalent chrome, but also maintaining and, at the same time, presenting an excellent coating adhesion, is formed on the surface of the galvanized film, without using chemicals such as injurious sexivalent chrome affecting the environment, it can be applied to various components in a large electronics domain including computer equipment, communication equipment or the like as mentioned above, and its industrial utility is considerably high. <IMAGE></p> |
