ASTM B 874 : 1996 : R2008
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Standard Specification for Chromium Diffusion Coating Applied by Pack Cementation Process
Hardcopy , PDF
11-11-2014
English
01-08-2008
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 02.05, 2017 Describes the requirements for chromium diffusion of metals by the pack cementation method.
| Committee |
B 08
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| DocumentType |
Standard
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| Pages |
3
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| ProductNote |
Reconfirmed 2008
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| PublisherName |
American Society for Testing and Materials
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| Status |
Superseded
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| SupersededBy | |
| Supersedes |
1.1 This specification covers the requirements for chromium 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 chromium (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 chromium halides which transfers chromium to the substrate for subsequent diffusion. The chromium-rich surface enhances corrosion, thermal stability, and wear-resistant properties.
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.
| ASTM E 1077 : 2014 : REDLINE | Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens |
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