一、前言 在金属表面上所使用的高质量有机保护涂料,如果与金属表面粘合得好,那么,该涂料对金属的保护是有效的,甚至在腐蚀性最苛刻的环境条件下也是有效的。 但是金属表面上总有少量区域中的有机涂膜与金属粘合得不那么好,或存在漏涂,而且许多涂装了涂料的金属制品在运输、安装和使用中受到划伤或压伤后,会有一部分金属表面裸露在环境中。如果这些表面曝露于大气中,或长期浸渍在电解质里,如船 I. INTRODUCTION The use of high quality organic protective coatings on metal surfaces, if bonded well to metal surfaces, is effective for metal protection and is effective even under the most corrosive environmental conditions . However, there are always a few areas on the metal surface where the organic coating does not adhere well to the metal or leaks, and many painted metal products are scratched or crushed during shipping, installation, and use , There will be a part of the metal surface exposed to the environment. If these surfaces are exposed to the atmosphere, or long-term immersion in the electrolyte, such as boats