标准摘要
[中文适用范围]： 本国际标准规定了一种破坏性方法，用于测定干膜厚度，通过以特定方式造成的涂层损害进行显微镜评估。该方法适用于几乎所有底材和涂层组合，并允许测定涂层体系中的单层膜厚。不能在以下情况下应用或只能有限制地应用： - 太软和/或弹性涂层（无法观察到划痕或钻孔）, - 太硬（无法划伤/钻孔）或太软和/或弹性底材, - 涂层与底材的视觉对比度过低, - 膜厚大于测量显微镜的景深。 [外文原描述]： ISO 19399:2016 specifies a destructive method for determination of the dry film thickness, in which damage to the coat caused in a definite manner is evaluated microscopically. The method is suitable for almost all coat-substrate combinations and also allows determination of the single film thicknesses of coating systems. The method cannot be applied or can only be applied with restrictions in case of - too soft and/or elastic coatings (no recognizable scribe or drill hole can be observed), - hard (cannot be scribed/drilled) or too soft and/or elastic substrates, - too low visual contrast between the coating and substrate, and - film thicknesses that are larger than the depth of field of the measuring microscope.
英文名称Paints and varnishes — Wedge-cut method for determination of film thickness (scribe and drill method)