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

ASTM-B761 - 2017 R21 EDITION - CURRENT
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Standard Test Method for Particle Size Distribution of Metal Powders and Related Compounds by X-Ray Monitoring of Gravity Sedimentation
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Scope

1.1 This test method covers the determination of particle size distributions of refractory metal powders. Experience has shown that this test method is satisfactory for the analysis of elemental tungsten, tungsten carbide, molybdenum, and tantalum powders, all with an as-supplied Fisher number of 6 [mu]m or less, as determined by Test Method B 330. Other refractory metal powders (for example, elemental metals, carbides, and nitrides) may be analyzed using this test method with caution as to significance until actual satisfactory experience is developed (see 7.2). The procedure covers the determination of particle size distribution of the powder in the following two conditions:

1.1.1 As the powder is supplied (as-supplied), and

1.1.2 After the powder has been deagglomerated by rod milling as described in Practice B 859.

1.2 This test method is applicable to particles of uniform density and composition having a particle size distribution range of 0.1 to 100 [mu]m. However, with tungsten, molybdenum, tantalum, and tungsten carbide powders, analyses are limited to a particle size distribution range of 0.1 to 30 [mu]m.

1.3 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. Specific hazard information is given in Section 7.

Keywords

metal powders; particle size; particle size distribution; powdered metals; refractory metal powders; sedimentation particle size distribution; ICS Number Code 77.160 (Powder metallurgy)

To find similar documents by ASTM Volume:

02.05 (Metallic and Inorganic Coatings; Metal Powders and Metal Powder Products)

To find similar documents by classification:

77.160 (Powder metallurgy Including sintered metal materials and hardmetals)

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Document Number

ASTM-B0761-17R21

Revision Level

2017 R21 EDITION

Status

Current

Modification Type

Revision

Publication Date

Sept. 1, 2021

Document Type

Test Method

Page Count

4 pages

Committee Number

B09.03