Tailoring role of Al and Ti particles in the microstructure and property of electrodeposited Ni matrix nanocomposite coatings
Source abstract
Abstract
Ni–Al–Ti nanocomposite coatings were synthesized by electrodeposition. The tailoring role of Al and Ti particles in the co-deposition behaviors of nanocomposite coatings was comprehensively investigated by analyzing the time-dependent current density and electric field near the co-deposited particles. The results showed that the Al and Ti particles caused different co-deposition behaviors of Ni deposits, consequently bringing in the gradual increase in the surface dendritic structure, the refinement of grain sizes, and the decrease in the [200] fiber texture of the nanocomposite coatings with the decrease in the Al/Ti weight ratio. COMSOL simulations verified the different co-deposition mechanisms of Ni grains near the two kinds of particles, which was vitally determined by the different conditions of current density and electric field near the particles. The micro-hardness results revealed that the decreased Al/Ti weight ratio led to enhanced micro-hardness of the nanocomposite coating; in addition, the maximum hardness of the nanocomposite coating was 604.3 HV0.2 for an Al/Ti weight ratio of 1:4. Thus, the time-dependent current density and electric field near co-deposited Al and Ti particles determined the microstructure and property of the Ni–Al–Ti nanocomposite coatings.
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Research context
OpenAlex topics: Electrodeposition and Electroless Coatings · Metal and Thin Film Mechanics · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Liuzhou Institute of Technology 1 , Liuzhou 545616, China
Liuzhou Bureau of EHV Transmission Company of China Southern Power Grid Co. Ltd 2 , Liuzhou 545006, China
Merchant Marine College, Shanghai Maritime University 3 , Shanghai 201306, China
School of Materials Science and Engineering, Shanghai Institute of Technology 4 , Shanghai 201418, China
Shanghai Nanotechnology Promotion Center 5 , Shanghai 200237, China
Funding
National Natural Science Foundation of China · Shanghai Sailing Program · The National Science Foundation for Post-Doctoral Scientists of China
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