色漆和清漆.曝露于海水中覆层的耐阴极解粘合作用的测定

[中文适用范围]： 本国际标准描述了两种方法，用于确定涂在金属基材上的油漆或其他有机涂层在表面涂层可能包含或出现不连续性时承受阴极剥离的能力。 该方法适用于暴露于海水的涂层，例如应用于船舶或海洋结构的涂层。 它们不适合评估涂层承受陆地结构阴极剥离的能力。 方法 A 涉及使用阴极保护电路，从而对测试基板的电极电位进行恒电位控制。 方法 B 涉及使用连接到测试基板的牺牲阳极。 这体现了船舶上常用的阴极保护的实用方法。 [外文原描述]： ISO 15711:2003 describes two methods for determining the ability of paint, or other organic coatings, applied to metallic substrates to withstand cathodic disbonding when the surface coating may contain or develop discontinuities. The methods are applicable to coatings that are exposed to sea water, such as those applied to ships or marine structures. They are not suitable for the assessment of the ability of coatings to withstand cathodic disbonding on land-based structures. Method A involves the use of a cathodic protection circuit, whereby the electrode potential of the test substrates is controlled potentiostatically. Method B involves the use of sacrificial anodes attached to the test substrates. This reflects the practical method of cathodic protection commonly used on ships.