ASTM-B875 2003

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B875-96(2003) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process

Published By	Publication Date	Number of Pages
ASTM	2003	3

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Categories: 25.220.40 - Metallic coatings, ASTM

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Description

1.1 This 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.

1.2 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.

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PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Classification Ordering Information
2	Processing Requirements Coating Requirements Test Methods
3	Sampling Rejection and Rehearing Certification Record Retention Keywords

Additional information

Standard Title	B875-96(2003) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
Published Code	ASTM
Publication Date	2003
Pages Count	3
ICS Codes	25.220.40 - Metallic coatings

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ASTM-B875 2003

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