This document specifies the test method to determine the iso-electric point of fine ceramic powders, which is measured in the state of suspension.

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This document specifies the test method to determine the extent to which ceramic powder compacts made of granulated or ungranulated ceramic powders are densified, when they are sintered at a high temperature without the application of any external pressure or external densification force. The test method is applicable to pure oxides, mixtures of oxides and solid solutions, and is also applicable to non-oxides (e.g. carbides, nitrides) that can be sintered under vacuum or constant gas pressure (1 bar or less) to prevent oxidation or decomposition. The test method is not applicable to ceramics that can only be sintered using pressure-assisted sintering techniques such as hot pressing (HP), hot isostatic pressing (HIP), gas pressure sintering (GPS) or spark plasma sintering (SPS). Inorganic sintering additives can be used where their presence is reported.

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ISO 19613:2018 specifies a method for measurement of the viscosity of a ceramic slurry using a rotational viscometer.

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ISO 20379:2018 specifies a method for measurement of thixotropic behaviour of ceramic slurry with rotational viscometer. The slurry with high-solid loading, which is used in ceramic manufacturing, has a generally non-Newtonian property. This method is limited to measurement of thixotropic behaviour of high-solid loaded ceramic slurry with "coaxial double cylinder viscometer", "cone and plate viscometer" and "a parallel plate viscometer" as rotational viscometers.

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ISO 18753:2017 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.

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ISO 18591:2015 specifies the testing method to determine the compressive strength of ceramic granules, when subjected to uniaxial compressive loading in a confining die, under specified conditions.

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ISO 17860:2014 specifies the testing method to determine the drying loss of granulated ceramic powders. The drying loss of granulated ceramic powders means the loss of mass that occurs from drying under specified conditions.

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ISO 17172:2014 specifies the test method for determining the extent to which granulated or ungranulated ceramic powders are compacted, when subjected to uniaxial compressive loading in a confining die, under specified conditions.

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ISO 14629:2012 specifies a test method to determine the flowability of granulated or ungranulated ceramic powders by means of a specified funnel. The method is applicable only to powders which flow freely through the specified test orifice.

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ISO 14703:2008 specifies a general wet-sample preparation technique common to the size analysis of powdered fine ceramic materials. The analyzed size distribution of fine particles is strongly dependent on the sample preparation.

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ISO 23145-1:2007 specifies a procedure to determine the tap density of granulated or ungranulated ceramic powders by a constant-volume measuring method.

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ISO 24235:2007 specifies a laser diffraction method for measuring particle size distributions, by means of the detection of angular distributions of the intensity of light scattered by fine-ceramic raw powders dispersed in a liquid phase irradiated by a laser beam.

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ISO 24369:2005 specifies the procedure to determine the content of coarse particles in a fine ceramic powder and/or in a fine ceramic suspension using an aqueous-based wet sieving method.

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ISO 18757:2003 provides guidelines for the determination of the total specific external and internal surface area of disperse or porous (pore diameter greater than 2 nm) fine ceramic materials by measuring the amount of physically adsorbed gas according to the method of Brunauer, Emmett and Teller (BET method). This International Standard only focuses on specific details relevant to fine ceramic materials. It should further be noted that the BET method cannot be applied to type I isotherms (microporous materials or chemisorption behaviour) or when the solid adsorbs the measuring gas.

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ISO 18753:2004 specifies a method for determining the particle density of fine ceramic powders using liquid pyknometry.

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