EP 0071436 A1 19830209 - Electroless nickel plating.
Title (en)
Electroless nickel plating.
Title (de)
Chemische Vernickelung.
Title (fr)
DépÔt chimique de nickel.
Publication
Application
Priority
US 28697181 A 19810727
Abstract (en)
Nickel-phosphorus deposits are electrolessly coated onto substrates at a commercially acceptable rate of deposition in a manner that enhances corrosion resistance and reduces the internal tensile stress of the electroless deposit on the substrate. This is done by plating from a bath that is sulfur-free (or free of sulfur except at its highest oxidation state) and that includes an unsaturated carboxylic acid of the formula R(COOH)n wherein R is an unsaturated alkyl group of at least 2 carbon atoms and n is at least 1, or a derivative thereof. Such compounds include aconitic, citraconic, fumaric, itaconic and maleic acids. The reducing agent of the bath may also be its phosphorus source e.g. an alkali metal hypophosphite.
IPC 1-7
IPC 8 full level
C23C 18/32 (2006.01); C23C 18/36 (2006.01)
CPC (source: EP)
C23C 18/36 (2013.01)
Citation (search report)
- [X] FR 2144782 A1 19730216 - SHIPLEY CO
- [A] US 2935425 A 19600503 - GREGOIRE GUTZEIT, et al
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0071436 A1 19830209; EP 0071436 B1 19871014; EP 0071436 B2 19931013; AT E30251 T1 19871015; CA 1185404 A 19850416; DE 3277461 D1 19871119; JP S5845368 A 19830316
DOCDB simple family (application)
EP 82303913 A 19820723; AT 82303913 T 19820723; CA 407227 A 19820714; DE 3277461 T 19820723; JP 13106782 A 19820727