2. Electroless nickel-boron baths
According to the principle of chemical deposition, two chemical compounds are essential for the operation of a nickel-boron bath: nickel salts and a suitable reducing agent. However, other products are also necessary for the bath to function properly and for the quality of the coatings.
2.1 Components of an electroless nickel-boron bath
The catalytic and spontaneous nature of electroless nickel deposition reactions implies a more complex bath composition than that of their electrolytic counterparts. Indeed, it is essential to work under conditions close to bath instability, in order to maintain sufficient deposition rates while remaining stable enough to allow prolonged use.
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Electroless nickel-boron baths
Parameters influencing the nickel-boron coating process and the resulting deposits
Bibliography
Regulations
ELV (End of Life Vehicles).
European Directive 2000/53/EC on end-of-life vehicles stipulates that "materials and components for vehicles put on the market after 1 er January 2003 must not contain lead, cadmium, mercury or hexavalent chromium. The tolerance is 0.1% for lead and 0.01% for cadmium, provided that these substances are not intentionally introduced."...
Patents
Mc Comas, E. Nodular nickel boron coating, US patent N° 20040111947, 2004. (Universal Chemical Technologies Inc., Florida.
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