Improvement in Cr Nanoparticle Content in Ni–Cr Film by Co-deposition with Combined Surfactant HPB and CTAB

Abstract

The effects of single surfactant hexadecylpyridinium bromide (HPB) and cetyltrimethylammonium bromide (CTAB) and the combination of HPB and CTAB on the Cr nanoparticle content in the Ni-Cr film prepared by codeposition were investigated. Single HPB/CTAB addition inhibited the oxidation and amorphous transformation of the Cr nanoparticles in the plating bath and effectively stabilized the Cr nanoparticles content at approximately 10 mass% as a function of time. Moreover, the combination of HPB and CTAB formed a cylindrical micelle structure on the Cr nanoparticle surface, which prompted the formation of a layer of NiCr 2 O 4. As a result, the Cr nanoparticle content increased sharply to 20 mass%.

Electrodeposition of High-Quality Ni/SiC Composite Coatings by Using Binary Non-Ionic Surfactants

“…By far, many typical surfactants have been used to disperse nanoparticles, including SDS [14], hexadecylpyridinium bromide (HPB) [15,16], CTAB [17] and so on. However, dispersed nanoparticles made by using ionic surfactants usually tend to re-agglomerate after being added to the electroplating solution [12].…”

Palladium Acetate/[CPy][Br]: An Efficient Catalytic System towards the Synthesis of Biologically Relevant Stilbene Derivatives via Heck Cross‐Coupling Reaction.

“…In particular, ILs with imidazolium, pyridinium and ammonium cations are the most widely spread ILs . To the best of our knowledge, however, the use of cetylpyridinium bromide ([CPy][Br]); as an excellent biologically significant surfactant material, used in nanoscience, electrochemistry, metal processing, material science, separation science, and as germicide has not been explored to date as reaction medium for organic transformations…”