Standard Test Method for Porosity in Gold or Palladium Coatings on Metal Substrates by Gel-Bulk Electrography
|Publication Date:||15 April 1995|
|ICS Code (Metallic coatings):||25.220.40|
This test method covers equipment and techniques for determining porosity in noble metal coatings, particularly electrodeposits and clad metals used on electrical contacts.
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.
Other porosity testing methods are outlined in Guide B765. Detailed critical reviews of porosity testing are also available.2 Other porosity test methods are B735, B741, B799, and B809.
The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
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 become familiar with all hazards including those identified in the appropriate Material Safety Data Sheet (MSDS) for this product/material as provided by the manufacturer, to establish appropriate safety, health, and environmental practices, and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Sections 7 and 8.
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.
2 Nobel, F. J., Ostrow, B. D., and Thompson, D. W., "Porosity Testing of Gold Deposity," Plating, Vol 52, 1965, p. 1001, and Krumbein S. J., "Porosity Testing of Contact Platings," Proceedings, Connectors and Interconnection Technology Symposium, October 1987, p. 47.