ISO 15901-1:2005 水银孔率法和气体吸收法测定固体材料的孔径分布和孔隙度 第1部分：压汞法

标准编号：ISO 15901-1:2005

中文名称：水银孔率法和气体吸收法测定固体材料的孔径分布和孔隙度 第1部分：压汞法

英文名称：Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption — Part 1: Mercury porosimetry

发布日期：2005-12

标准范围

ISO 15901-1:2005描述了一种根据Ritter和Drake的方法，通过压汞法评估固体孔隙中的孔径分布和比表面积的方法。ISO 15901-1:2005描述了一种比较试验，通常由于汞污染而具有破坏性，在该试验中，穿透孔隙或空隙的汞的体积被确定为施加静水压力的函数，静水压力可能与孔径有关。目前，实际考虑将最大施加绝对压力限制在约400 MPa（60 000 psia），对应于约0003 m的最小等效孔径。由于汞的静水压头从样品顶部到底部的差异，具有显著深度的样品的最大直径受到限制。在大多数情况下，该限值可被视为400 m。ISO 15901-1:2005适用于颗粒间和颗粒内孔隙度，但无法区分共存的这些孔隙度。ISO 15901-1:2005适用于研究大多数不可湿、含汞的多孔材料。与汞混合的样品，例如某些金属，例如金、铝、还原铜、还原镍和银，可能不适用于该技术，或者可能需要进行初步钝化。

ISO 15901-1:2005 describes a method for the evaluation of the pore size distribution and the specific surface in pores of solids by mercury porosimetry according to the method of Ritter and Drake. ISO 15901-1:2005 describes a comparative test, usually destructive due to mercury contamination, in which the volume of mercury penetrating a pore or void is determined as a function of an applied hydrostatic pressure, which can be related to a pore diameter.Practical considerations presently limit the maximum applied absolute pressure to about 400 MPa (60 000 psia) corresponding to a minimum equivalent pore diameter of approximately 0,003 m. The maximum diameter is limited for samples having a significant depth due to the difference in hydrostatic head of mercury from the top to the bottom of the sample. For the most purposes, this limit can be regarded as 400 m. ISO 15901-1:2005 applies to inter-particle and intra-particle porosity but cannot distinguish between these porosities where they co-exist.ISO 15901-1:2005 is suitable for the study of most non-wettable, by mercury, porous materials. Samples that amalgamate with mercury, such as certain metals, e.g. gold, aluminium, reduced copper, reduced nickel and silver, can be unsuitable for this technique or can require a preliminary passivation.

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