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  • ASTM
    B821-10 Standard Guide for Liquid Dispersion of Metal Powders and Related Compounds for Particle Size Analysis
    Edition: 2010
    $82.37
    Unlimited Users per year

Description of ASTM-B821 2010

ASTM B821 - 10

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

Active Standard ASTM B821 | Developed by Subcommittee: B09.02

Book of Standards Volume: 02.05




ASTM B821

Significance and Use

The method of powder dispersion in a liquid has a significant effect on the results of a particle size distribution analysis. The analysis will show a too-coarse, unstable, or nonrepeatable distribution if the powder has not been dispersed adequately. It is therefore important that parties wishing to compare their analyses use the same dispersion technique.

This guide provides established powder dispersion techniques for certain materials and the means of deriving techniques for materials not listed. It should be used by all parties performing liquid-dispersed particle size analysis of all of the materials covered by this guide (see 1.1, 1.2, and 4.1).

1. 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 are currently in general use for certain materials.

1.2 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.

1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.4 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 and health practices and determine the applicability of regulatory limitations prior to use.


2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B243 Terminology of Powder Metallurgy

B430 Test Method for Particle Size Distribution of Refractory Metal Powders and Related Compounds by Turbidimetry

B761 Test Method for Particle Size Distribution of Metal Powders and Related Compounds by X-Ray Monitoring of Gravity Sedimentation

B822 Test Method for Particle Size Distribution of Metal Powders and Related Compounds by Light Scattering


Keywords

liquid dispersion; metal powders; particle size analysis; powder metallurgy; Liquid dispersion; Dispersion; Metal powders; Particle analysis--metallic materials; Powder metallurgy (P/M) materials;


ICS Code

ICS Number Code 19.120 (Particle size analysis. Sieving)


DOI: 10.1520/B0821-10

ASTM International is a member of CrossRef.

ASTM B821

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