ASTM-B879 1997
$40.63
B879-97 Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
Published By | Publication Date | Number of Pages |
ASTM | 1997 | 11 |
ASTM B879-97
Historical Standard: Standard Practice for Applying Non-Electrolytic Conversion Coatings on Magnesium and Magnesium Alloys
ASTM B879
Scope
1.1 this practice covers a guide for metal finishers to clean and then provide a paint base for the finishing of magnesium and magnesium alloys using chemical conversion coatings. Where applicable (for example, aerospace) secondary supplementary coatings (for example, surface sealing) can be used (see Appendix X1).
1.2 Although primarily intended as a base for paint, chemical conversion coatings provide varying degrees of surface protection for magnesium parts exposed to indoor atmosphere either in storage or in service under mild exposure conditions. An example is the extensive use of the dichromate treatment (see 3.2) as a final coating for machined surfaces of die cast magnesium components in the computer industry.
1.3 The traditional numbering of the coating is used throughout.
1.4 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.
Keywords
chemical conversion coatings; chromates; cleaning magnesium; preparation for painting; protection; surface sealing
ICS Code
ICS Number Code n/a
DOI: 10.1520/B0879-97