ASTM-B798 Historical Revision Information
Standard Test Method for Porosity in Gold or Palladium Coatings on Metal Substrates by Gel-Bulk Electrography

ASTM-B798 - 1990 EDITION - SUPERSEDED
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Standard Test Method for Porosity in Gold or Palladium Coatings on Metal Substrates by Gel-Bulk Electrography
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Scope

1.1 This test method covers equipment and techniques for determining porosity in noble metal coatings, particularly electrodeposits and clad metals used on electrical contacts.

1.2 The test method is designed to show whether the porosity level is less or greater than some value which by experience is considered by the user to be acceptable for the intended application.

1.3 Other porosity testing methods are outlined in Guide B765. Detailed critical reviews of porosity testing are also available. Other porosity test methods are B735, B741, B799, and B809.

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. For specific hazard statements, see Sections 7 and 8.

1.5 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.

Keywords

electrography; gel; gel electrography; gold coatings; gold platings; palladium coatings; palladium platings; plating; porosity; porosity testing; ICS Number Code 25.220.40 (Metallic coatings)

To find similar documents by ASTM Volume:

02.04 (Nonferrous Metals--Nickel, Cobalt, Lead, Tin, Zinc, Cadmium, Precious, Reactive, Refractory Metals and Alloys; Materials for Thermostats, Electrical Heating and Resistance Contacts, and Connectors)

To find similar documents by classification:

25.220.40 (Metallic coatings Including electrolytic depositions, cathodic coatings, autocatalytic coatings, etc.)

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Document Number

ASTM-B798-90

Revision Level

1990 EDITION

Status

Superseded

Modification Type

Reapproval

Publication Date

Dec. 28, 1990

Document Type

Test Method

Page Count

5 pages

Committee Number

B02.11