Microstructure and performance of magnetic field assisted, pulse-electrodeposited Ni–TiN thin coatings with various TiN grain sizes

Self Cite

In this work, we study jet-electrodeposited Ni–TiN composite nanocoatings (CNCs) for improving abrasion resistance as a function of various nozzle diameters. In addition, COMSOL software is utilized to simulate the process of jet electrodeposition, particularly the influence of spraying speed and pressure of the electrolyte on the abrasion resistance of coatings. Optimization of the nozzle diameter to obtain uniform and high-performance coatings showed that a Φ7 mm nozzle diameter generated the optimum spraying speed and spraying pressure, which results in good micro-hardness and abrasion resistance of the Ni–TiN CNCs. Under these conditions, the 45 steel substrates are coated with a compact layer of uniform and nano-sized TiN particles, which are responsible for the high abrasion resistance of our Ni–TiN CNCs. Our study may motivate researchers to study jet electrodeposition in order to obtain abrasion-resistant coatings.

Section: Survey Of Phase Structuresupporting

confidence: 94%

Process Simulation and Abrasion Behavior of Jet Electrodeposited Ni–TiN Nanocoatings

Yang

Cao

et al. 2022

Self Cite

“…Simultaneously, peaks of the TiN phase were 62.8°, 41.6°, and 37.3°, which correspond 0 0), and (1 1 1) planes, respectively. In addition, Equation (1) was u average grain size of Ni and TiN was found to be around 61.3 and 30 based on the XRD data [19]. An SEM picture of the surface of Ni-TiN nanoplatings was depicted in Figure 5a.…”

Section: Ni-tin Nanoplatings Microstructure Analysismentioning

confidence: 94%

Forecast the Microhardness of Ni-TiN Nanoplatings via an Artificial Neural Network Model

Liu

Han

et al. 2022

This study used a backward propagation (BP) model to estimate the microhardness of Ni-TiN nanoplatings prepared using pulse electrodeposition. The influence of electroplating parameters on the microhardness of Ni-TiN nanoplatings was discussed. These parameters included the concentration of the TiN particle, pulse frequency, duty cycle, and current density. The surface morphology, microstructure, and microhardness of Ni-TiN nanoplatings were examined using white-light interfering profilometry, scanning electron microscopy, Rockwell hardness testing, and high-resolution transmission emission microscopy. The Ni-TiN thin film prepared by pulse electrodeposition had a surface roughness of about 0.122 µm, and the average size of the Ni and TiN grains on this film was 61.8 and 31.3 nm, respectively. The optimal process parameters were determined based on the maximum microhardness of the deposited Ni-TiN nanoplatings, which included an 8 g/L TiN particle concentration, a 5 A/dm2 current density, an 80 Hz pulse frequency, and a 0.7 duty cycle. It could be concluded that the BP model would accurately forecast the microhardness of Ni-TiN nanoplatings, with a maximal error of about 1.04%.

“…Selective particle reinforcements were embedded into the deposit to compensate for the weakness of the metal matrix. For instance, H. Zhang [4] found that the incorporation of TiN particle endowed the composite coating with a good corrosion resistance and good wear resistance. The self-lubricating composite coating could be synthesized by the coelectrodeposition of PTFE particles into the Ni matrix, which demonstrates a low friction coefficient and good wear resistance [5,6].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Microstructure and Properties of the Electrodeposited Ni-SiC Composite Coating

Chen

Tan

et al. 2023

The current work synthesized Ni-SiC composite coating with different SiC microparticle contents. The role of the SiC microparticle in designing the Ni-SiC composite microstructure was revealed. The SiC microparticle physically interrupted the continuous growth of the underlying columnar Ni grains. The columnar Ni grain between the embedded SiC microparticle grew without disturbance. Only upon SiC microparticles was a new layer starting with refined Ni grains observable. The vertical columnar Ni grains reappeared as the position departed the SiC microparticle upper surface. The increase in the contents of the SiC microparticle led to an increased level of grain refinement and the elimination of the (200) fiber texture. Besides that, the number of V-shaped valleys increased as well. Corrosion testing results show that the corrosion resistance of Ni-SiC composite coating increased with the increased SiC contents, which was mainly due to the optimized microstructure.