Journal ArticleDOI
Autocatalytic electroless nickel-boron plating on light alloys
TLDR
In this paper, the authors examined the possibility of depositing a thick autocatalytic electroless Ni-B plating on aluminium alloys and proposed an alkaline bath containing sodium borohydride as the reducing agent.Abstract:
Light alloys are more and more widely used, notably in aeronautics and the car industry. To improve their superficial properties, they can be covered with a hard and wear resistant protective layer. In this article, we examine the possibility of depositing a thick autocatalytic electroless Ni–B plating on aluminium alloys. We propose an alkaline bath containing sodium borohydride as the reducing agent. The deposition rate is held constant by a regular replenishment of the Ni–B bath allowing a rate of about 25 μm/h. The Knoop microhardness of the Ni–B deposits after the bath reaches about 750 hk100. Appropriate heat treatment can increase the deposit microhardness up to more than 1000 hk100 but must be applied with regard to the substrate properties. The study of these heat treatments will be published in a further paper.read more
Citations
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Wear Performance Optimization of Electroless Ni-B Coating Using Taguchi Design of Experiments
Suman Das,Prasanta Sahoo +1 more
TL;DR: In this article, the use of Taguchi parameter design to minimize the wear performance of electroless Ni-B coating by optimizing the tribological testing parameters is discussed, where three parameters viz. load (L), speed (S) and time (T) are considered with three levels each.
Journal ArticleDOI
Microstructure and properties of Ni–B–TiO2 nano-composite coatings fabricated by electroless plating
TL;DR: In this article, nano-composite Ni-B-TiO2 coatings are deposited on mild steel samples by electroless plating method and characterisation using SEM, XRD, microhardness and wear testers.
Preparation and Properties of Electroless Ni-B and Ni-B Nanocomposite Coatings
B. Kaya,T. Gulmez,M. Demirkol +2 more
TL;DR: A new electroless Ni-B coating, whose formulation is not available commercially, is developed in this paper, where nano size diamond particles (UDD-Ultra dispersive diamond) are added to improve hardness and wear resistance properties of the coating.
Journal ArticleDOI
Fabrication of Ni–B alloy coated vapor-grown carbon nanofibers by electroless deposition
TL;DR: In this paper, a homogeneous Ni-B alloy film was fabricated by electroless deposition and their microstructures were investigated, and the effects of heat treatment on the coated VGCNFs were also studied.
Journal ArticleDOI
A parametric investigation of the friction performance of electroless Ni-B coatings
Suman Das,Prasanta Sahoo +1 more
TL;DR: In this paper, the performance of electroless Ni-B coatings sliding against steel is experimentally investigated in terms of coefficient of friction (COF) for varying tribological testing parameters such as load, speed and time.
References
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Book
Electroless plating : fundamentals and applications
Glenn O. Mallory,Juan B. Hajdu +1 more
TL;DR: The Electroless Plating: Fundamentals and Applications (ESPA) as discussed by the authors is a comprehensive text that covers both fundamental and applied aspects of electroless deposition, and was first introduced at SUR/FIN '91.
Journal ArticleDOI
Nickel plating on steel by chemical reduction
A. Brenner,G. E. Riddell +1 more
TL;DR: In this article, a process was developed for the production of adherent nickel deposits of good quality on steel without the use of an electric current, which was brought about by chemical reduction of a nickel salt with hypophosphites in a hot ammoniacal solution.
Journal ArticleDOI
Anodic Oxidation of Reductants in Electroless Plating
TL;DR: In this paper, the anodic oxidation of reductants (hypophosphite, formaldehyde, borohydride, dimethylamine borane, and hydrazine) was studied on different metal electrodes (Au, Pt, Pd, Ag, Cu, Ni and Co) at various temperatures, with special interest in the catalytic aspect of electroless plating.
Related Papers (5)
Heat treatments for electroless nickel–boron plating on aluminium alloys
Fabienne Delaunois,P Lienard +1 more