ASTM B 875 : 1996 : R2024
Current
The latest, up-to-date edition.
Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
Hardcopy , PDF
English
01-06-2024
Committee |
B 08
|
DocumentType |
Standard
|
Pages |
3
|
PublisherName |
American Society for Testing and Materials
|
Status |
Current
|
Supersedes |
1.1This specification covers the requirements for aluminum diffusion of metals by the pack cementation method. Pack diffusion employs the chemical vapor deposition of a metal which is subsequently diffused into the surface of a substrate at high temperature. The material to be coated (substrate) is immersed or suspended in a powder containing aluminum (source), a halide salt (activator), and an inert diluent such as alumina (filler). When the mixture is heated, the activator reacts to produce an atmosphere of aluminum halides which transfers aluminum to the substrate for subsequent diffusion. The aluminum-rich surface enhances corrosion, thermal stability, and wear-resistant properties.
1.2This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.3This 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.
ASTM C 664 : 2010 : R2020 | Standard Test Methods for Thickness of Diffusion Coating |
ASTM B 487 : 2024 | Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section |
ASTM B 487 : 2020 | Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section |
ASTM C 664 : 2024 | Standard Test Methods for Thickness of Diffusion Coating |
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