Français
6. Defrosting
Chemical, electrolytic or mechanical processes can be used to remove a copper coating.
Table 9 gives some examples of the composition of copper demetallization solutions. . It should be pointed out that several cyanide- and/or hexavalent chromium-free demetallization solutions are currently offered by bath suppliers and marketed under different names.
The Ultimate Scientific and Technical Reference
This article is included in
Metal treatments
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Defrosting
Waste treatment – Health and safety
Bibliography
Websites
Legifrance
Ademe
Water Agency
Standards and norms
The AFNOR catalog can be consulted online: http://www.afnor.fr
- Standard Practice for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles (http://www.astm.org/Standards/A239.htm). - ASTM A239 -
Regulations
Arrêté du 30 juin 2006 relatif aux installations de traitements de surfaces soumises à autorisation au titre de la rubrique 2565 de la nomenclature des installations classées – JORF n° 205 du 5 septembre 2006.
European RoHS Directive (2002/95/EC) – Restriction of use of certain Hazardous Substances in electrical and electronic equipment –
Patents
Post-treatment of copper on printed circuit boards, EP1097618 B1 (March 2003).
Organic solderability preservative compositions, US 005 85 8074A (July 1997).
Directory
European Copper Institute :
International Copper Association :
International Copper Study Group (ICSG):
...Statistical and economic data
Copper has a long history of use, and today it plays a key role in industrial development. Copper deposits are found all over the world, but the largest reserves are in China and the USA. The annual production capacities of the main mines (as of July 2014) are shown in table
The Ultimate Scientific and Technical Reference
