ASTM-B922 2010

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B922-10 Standard Test Method for Metal Powder Specific Surface Area by Physical Adsorption

Published By	Publication Date	Number of Pages
ASTM	2010	4

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Description

1.1 This test method covers determination of surface area of metal powders. The test method specifies general procedures that are applicable to many commercial physical adsorption instruments. The method provides specific sample outgassing procedures for listed materials. It includes additional general outgassing instructions for other metals. The multipoint equation of Brunauer, Emmett and Teller (BET), along with the single point approximation of the BET equation, forms the basis for all calculations.

1.2 This test method does not include all existing procedures appropriate for outgassing metallic materials. The procedures included provided acceptable results for samples analyzed during interlaboratory testing. The investigator shall determine the appropriateness of listed procedures.

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

1.3.1 State all numerical values in terms of SI units unless specific instrumentation software reports surface area using alternate units. In this case, present both reported and equivalent SI units in the final written report. Many instruments report surface area as m ² /g, instead of using correct SI units (m ² /kg).

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.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Summary of Test Method Significance and Use Interferences Apparatus Reagents and Materials Hazards Sampling, Test Specimens, and Test Units Calibration and Standardization
3	Outgassing Procedure Calculations Report Precision and Bias Keywords

Additional information

Standard Title	B922-10 Standard Test Method for Metal Powder Specific Surface Area by Physical Adsorption
Published Code	ASTM
Publication Date	2010
Pages Count	4

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ASTM-B922 2010

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