1   Scope

This document specifies a method for determining the absolute particle density of fine ceramic powders or sintered parts using liquid pycnometry.

NOTE Other pycnometer methods like gas pycnometers (e.g. helium pycnometer), where a gas is used as media, also exist.

2   Normative references

The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 758, Liquid chemical products for industrial use — Determination of density at 20 °C

ISO 3507, Laboratory glassware — Pyknometers

ISO 6353-2, Reagents for chemical analysis — Part 2: Specifications — First series

ISO 6353-3, Reagents for chemical analysis — Part 3: Specifications — Second series

ISO 8213, Chemical products for industrial use — Sampling techniques — Solid chemical products in the form of particles varying from powders to coarse lumps

ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories

3   Terms and definitions

For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at iso.org/obp

— IEC Electropedia: available at electropedia.org/

3.1

absolute particle density

absolute density of ceramic powders

density of an individual ceramic particle, a ceramic powder or sintered parts

Note 1 to entry: When an enclosed space occurs (pore) inside the particle or part, the space is considered to be part of the individual particle or part. The result of the test is then the absolute density of the ceramic particles or ceramic parts with closed porosity.

Note 2 to entry: If the intention of the test is to determine the absolute density of a ceramic material, the test is limited to particles or parts without closed porosity.

3.2

particle

ceramic powder or an amount of small sintered ceramic parts

EXAMPLE:Grinding balls or other small parts.

Note 1 to entry: When the examined material has closed porosity inside the particles, the measured density is not the absolute density of the material but of the examined part.

3.3

pycnometry

method of measuring absolute particle density using a pycnometer

*Contact us (sales@goldapp.com.cn) to get this downloaded PDF*