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Evolution of reactive concentration during borohydride - reduced electroless nickel – boron plating and design of a replenishment procedure / Véronique Vitry in Industrial & engineering chemistry research, Vol. 51 N° 27 (Juillet 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9227-9234 Titre : Evolution of reactive concentration during borohydride - reduced electroless nickel – boron plating and design of a replenishment procedure Type de document : texte imprimé Auteurs : Véronique Vitry, Auteur ; Abdoul-Fatah Kanta, Auteur ; Fabienne Delaunois, Auteur Année de publication : 2012 Article en page(s) : pp. 9227-9234 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Design Résumé : Electroless nickel―boron samples with 5 wt % boron were synthesized on mild steel with a bath based on sodium borohydride. Evolution of chemistry in the bath was followed during plating. Most reactive was consumed during the first half hour of the process. However, reducing agent and stabilizer concentration evolve differently: the use of sodium borohydride is limited by diffusion toward the surface, while adsorption on the surface of the sample is the rate-limiting step for lead tungstate. A direct link was established between the amount of stabilizer used and the surface of the sample; however, it cannot be applied to the use of sodium borohydride. A batch replenishment procedure for the electroless bath was developed by chemistry analysis at different stages of the plating process. This procedure allowed bath reuse and reduction of the number of new bath preparations. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132258 [article] Evolution of reactive concentration during borohydride - reduced electroless nickel – boron plating and design of a replenishment procedure [texte imprimé] / Véronique Vitry, Auteur ; Abdoul-Fatah Kanta, Auteur ; Fabienne Delaunois, Auteur . - 2012 . - pp. 9227-9234. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 27 (Juillet 2012) . - pp. 9227-9234 Mots-clés : Design Résumé : Electroless nickel―boron samples with 5 wt % boron were synthesized on mild steel with a bath based on sodium borohydride. Evolution of chemistry in the bath was followed during plating. Most reactive was consumed during the first half hour of the process. However, reducing agent and stabilizer concentration evolve differently: the use of sodium borohydride is limited by diffusion toward the surface, while adsorption on the surface of the sample is the rate-limiting step for lead tungstate. A direct link was established between the amount of stabilizer used and the surface of the sample; however, it cannot be applied to the use of sodium borohydride. A batch replenishment procedure for the electroless bath was developed by chemistry analysis at different stages of the plating process. This procedure allowed bath reuse and reduction of the number of new bath preparations. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26132258