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ASTM B821 - 23

Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis

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Edition date: 2023-02-01
In Force
Available languages: English
Summary:

Keywords: liquid dispersion; metal powders; particle size analysis; powder metallurgy ;
Scope:

1.1 This guide covers the dispersion in liquids of metal powders and related compounds for subsequent use in particle size analysis instruments. This guide describes a general procedure for achieving and determining dispersion; it also lists procedures that have been found useful for certain materials.

1.2 This guide does not include specific procedures for dry dispersion of particulate materials. It only indicates when liquid dispersion is not appropriate and dry dispersion must be utilized (see 7.1.2.1). For guidance on development of methods of dry dispersion, see Guide E3340.

1.3 This guide is limited to metal powders and related metal compounds. However, the general procedure described herein may be used, with caution as to its significance, for other particulate materials, such as ceramics, pigments, minerals, etc.

1.4 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ICS: 19.120-Particle size analysis. Sieving
CTN: B09.02 - B09.02

Standards Cancellations

Anula a B0821-22

Otras Relaciones

Es referenciada por B859 - 21(2025)

Es referenciada por E3340-22

Es referenciada por B0761-17R21

Es referenciada por F3560-22

Es referenciada por B822 - 25

Es referenciada por E2651 - 25

Es referenciada por F3509 - 25

Es referenciada por E3338 - 25

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