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ASTM B 874 : 1996 : R2013

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Specification for Chromium Diffusion Coating Applied by Pack Cementation Process
Available format(s)

Hardcopy , PDF

Superseded date

09-11-2023

Language(s)

English

Published date

01-12-2013

CONTAINED IN VOL. 02.05, 2017 Describes the requirements for chromium diffusion of metals by the pack cementation method.

1.1This 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.

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 and health practices and determine the applicability of regulatory limitations prior to use.

Committee
B 08
DocumentType
Standard
Pages
2
ProductNote
Reconfirmed 2013
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM E 1077 : 2014 : REDLINE Standard Test Methods for Estimating the Depth of Decarburization of Steel Specimens

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