ISO 18754:2020 精细陶瓷（高级陶瓷、高级工艺陶瓷） 密度和表观气孔率的测定

标准编号：ISO 18754:2020

中文名称：精细陶瓷（高级陶瓷、高级工艺陶瓷） 密度和表观气孔率的测定

英文名称：Fine ceramics (advanced ceramics, advanced technical ceramics) — Determination of density and apparent porosity

发布日期：2020-04

标准范围

本文件规定了细陶瓷（包括所有陶瓷基复合材料）的表观固体密度、体积密度、表观孔隙率和几何体积密度的测定方法。描述了两种方法，并将其指定为方法A和B，如下所示:-方法A:用液体置换法测定体积密度、表观固体密度和表观孔隙率（阿基米德法）。注1:该方法不适用于测定大于10%的表观孔隙率。对于孔隙率较高的材料，测量精度可能不令人满意。如果孔隙度小于0.5%，该方法也可能不会给出令人满意的开放孔隙度结果。注2:该方法也不适用于平均孔径大于600μm的材料。-方法B:仅通过测量几何尺寸和质量来测定体积密度。

This document specifies methods for the determination of the apparent solid density, bulk density, apparent porosity and geometric bulk density of fine ceramics, including all ceramic matrix composites.Two methods are described and are designated as Methods A and B, as follows:— Method A: Determination of bulk density, apparent solid density and apparent porosity by liquid displacement (Archimedes' method).NOTE 1 This method is not appropriate for the determination of an apparent porosity greater than 10 %. For materials with higher porosity, the accuracy of the measurement might not be satisfactory. This method might also not give a satisfactory open porosity result if it is less than 0,5 %.NOTE 2 This method is also not suitable for materials which are known to have an average pore size of greater than 600 μm.— Method B: Determination of bulk density only, by measurement of geometric dimensions and mass.

标准预览图