Tribological and Electrochemical Properties of AISI D3 Steel Coated with Hafnium Carbon Nitride

Abstract

In this research work, hafnium carbonitride (HfCN) coatings were developed via physical vapor deposition with the aim to determine the electrochemical behavior of the HfCN layers on industrial steel substrates. The HfCN coatings, deposited at various negative bias voltage were characterized by X-ray diffraction (XRD), exhibiting the crystallography orientations corresponding to a mix of HfCN, HfC and HfN phases, while the X-ray photoelectron spectroscopy (XPS) measurements were used to determinate the chemical composition of the carbon nitride coatings. By using electrochemical impedance spectroscopy (EIS) and Tafel curves, it was possible to estimate the electrochemical behavior of the HfCN coatings in a sodium chloride (NaCl) solution. Moreover, scanning electron microscopy (SEM) was performed to analyze morphological and chemical surface changes on the HfCN layer due to the reaction in NaCl/HfCN/steel surface interface. The electrochemical behavior of the HfCN coatings in relation to the uncoated AISI D3 steel showed a reduction of 98 % in corrosion rate, indicating that the applied HfCN coatings may be a promising material for industrial applications.

HfN Coating of ASSAB 17 Steel by PVD Method and its Effects on 6063-T5 Aluminum Alloy Turning

“…Nevertheless, in either system, a surface contact trace is observed due to the trace that the chip left during its displacement on the attack surface, leaving steel residues [44,45]. This contact trace is more visible in the uncoated burin, due to self-lubricant layer resulting from the HfN coating which improves its performance in wear processes, as previously reported [25][26][27][28][29][30]33,[39][40]. Similarly, Fig.…”

“…Most of the cuttings tools in the market currently implemented various Titanium-based coatings [22][23][24], but several elements have been investigated as candidate substitute of Titanium component. Hafnium nitride (HfN) is one of the studied alternatives whereas its deposition, characterization and possible applications have been reported in literature over the last decade [25][26][27][28][29][30].…”

Evaluation of the Wear-Corrosion Process in Beta-Tricalcium(β-TCP) Films Obtained by Physical Vapor Deposition (PVD)

“…After 1440 hours the impedance value decreases to 290 ohm cm 2 , due to the loss of the protective layer and the absorption of some component species of the electrolyte. At 2160 hours the dual corrosion-wear test system was stabilized and remained constant [33]. The potentiodynamic polarization curves observed in Fig.…”