标准摘要
[中文适用范围]： ISO 13318 的这一部分描述了一种利用液体中的离心沉降来确定均质颗粒材料的粒度分布的方法。 固体浓度通过 X 射线束的衰减来确定。 所得信号能够转换为粒度分布。 本标准规定的粒度分布测定方法适用于可分散在液体中的粉末或以浆体形式存在的粉末。 用于分析的典型粒径范围为 0.1 μm 至 5 μm。 该方法适用于所有颗粒具有相同有效密度、化学成分和相似形状的粉末。 具有原子序数大于约12的元素的材料可预期产生足够的X射线不透明度。 颗粒在悬浮液中不应发生化学或物理变化。 颗粒的密度必须高于液体的密度。 [外文原描述]： ISO 13318-3:2004 describes a method for determining the particle size distributions of homogeneous particulate material using centrifugal sedimentation in a liquid. Solids concentrations are determined by the attenuation of an X-ray beam. The resulting signal enables conversion to a particle size distribution. The method of determining the particle size distribution described in this standard is applicable to powders which can be dispersed in liquids or powders which are present in slurry form. The typical particle size range for analysis is from 0,1 m to 5 m. The method is applicable to powders in which all particles have the same effective density, chemical composition and comparable shapes. Materials possessing elements with an atomic number greater than about 12 can be expected to produce adequate X-ray opacity. Particles should not undergo chemical or physical change in the suspension liquid. It is necessary that the particles have a higher density than that of the liquid.
英文名称Determination of particle size distribution by centrifugal liquid sedimentation methods — Part 3: Centrifugal X-ray method