ASTM B875-96(2018) PDF

Scope: 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.3 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.

ASTM B875-96(2018) Referenced Document

ASTM B374 Standard Terminology Relating to Electroplating
ASTM B487 Standard Test Method for Measurement of Metal and Oxide Coating Thickness by Microscopical Examination of Cross Section
ASTM B602 Standard Test Method for Attribute Sampling of Metallic and Inorganic Coatings
ASTM B697 Standard Guide for Selection of Sampling Plans for Inspection of Electrodeposited Metallic and Inorganic Coatings*， 2021-10-01 Update
ASTM B762 Standard Test Method of Variables Sampling of Metallic and Inorganic Coatings
ASTM C664 Standard Test Methods for Thickness of Diffusion Coating
ASTM D3951 Standard Practice for Commercial Packaging

2018 ASTM B875-96(2018) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
1996 ASTM B875-96(2013) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
1996 ASTM B875-96(2008) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
1996 ASTM B875-96(2003) Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process
1996 ASTM B875-96 Standard Specification for Aluminum Diffusion Coating Applied by Pack Cementation Process