Stoichiometric measurements in nickel–hypophosphite baths for electroless deposition

Autor:	Kenneth A. Holbrook, Peter B. Wells, Nima K. Dirjal
Rok vydání:	1994
Předmět:	Phosphorus Hypophosphite Inorganic chemistry chemistry.chemical_element Phosphate Biochemistry Redox Analytical Chemistry Nickel chemistry.chemical_compound chemistry Plating Environmental Chemistry Titration Spectroscopy Stoichiometry
Zdroj:	Analytica Chimica Acta. 290:287-293
ISSN:	0003-2670
DOI:	10.1016/0003-2670(94)80115-0
Popis:	Titrimetric methods and 31 P NMR spectrometry have been compared for the determination of hypophosphite (H 2 PO − 2 ) and phosphite (HPO ·- 3 ) in both alkaline and acid solutions used in the electroless deposition of nickel-phosphorus alloys. It has been shown that reproducible and reliable redox titrimetric methods can be used to follow the charges in concentration of both species with time during the plating process. In addition, measurements of the phosphorus in the nickel deposit by conversion to phosphate in acidic solution and use of flow-injection analysis has enabled satisfactory phosphorus mass-balance in the system to be achieved.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0cbe92264301ed5b5ee07e8b7d224d19 https://doi.org/10.1016/0003-2670(94)80115-0 Zobrazit plný text záznamu