Evidence of Electrochemical Resistance on Ternary V-C-N Layers

Caicedo, J.C.; Aperador, W.; Mozafari, Masoud; Tirado, Liliana

doi:10.1007/s12633-018-9782-7

Cited by 10 publications

(1 citation statement)

References 28 publications

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“…Through these results, a NaCl-type FCC structure was determined for the three coatings, in which Ti, B, Cr and Al atoms would be located at the Wyckoff 4a site and the Wyckoff 4b site is randomly occupied by C and N atoms. Thus, titanium carbon-nitride as well as boron carbo-nitride are agreement with the international indexing files JCPDF 00-042-1488 and JCPDF 00-035-1293, while for aluminum chromium nitride two indexing are performed, taking into account the structure of chromium nitride (CrN) JCPDF 00-003-1157 and aluminum nitride (AlN) JCPD 00-025-1495 [15]. In addition, it can be observed that the CrAlN coating is constituted by CrN and AlN, which present the same NaCl-type FCC crystal structure and a 225-Fm3m space group.…”

Section: Structural Study For Ticn Bcn and Craln Coatings Nitride Coatingssupporting

confidence: 53%

Analysis of the Tribological Evolution of Nitride-Based Coatings

Ortiz¹,

Hernández‐Rengifo²,

Caicedo³

2022

Tribology of Machine Elements - Fundamentals and Applications

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This chapter describes the fundamental and technological role of nitride-based hard coatings as protective coatings in some applications within the metalworking industry. For this, this chapter will present a critical review of previous research and recent developments on nitride-based coatings in different systems such as (multilayers, quaternaries, among others), where it will be possible to demonstrate their main properties and advantages that they can grant when they are implemented on conventional steels, such as greater hardness, surface control, electrochemical resistance, resistance against wear, among others. These results will determine that this type of coatings are suitable candidates to be implemented as protective coatings on cutting tools, which suffer from high wear in machining processes in the metalworking industry.

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Section: Structural Study For Ticn Bcn and Craln Coatings Nitride Coatingssupporting

confidence: 53%

Analysis of the Tribological Evolution of Nitride-Based Coatings

Ortiz¹,

Hernández‐Rengifo²,

Caicedo³

2022

Tribology of Machine Elements - Fundamentals and Applications

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PVD coatings influence (TiCN, BCN, and CrAlN) on the fatigue life behavior of AISI 1045 steel for automotive applications

Jácome

Angulo

Castro

2022

Int J Adv Manuf Technol

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This current work evaluated the in uence of Titanium Carbo-nitride (TiCN), Chromium Aluminum Nitride (CrAlN) and Boron Carbo-nitride (BCN) coatings deposited on AISI 1045 steel and its behavior in fatigue life. Suitable deposition parameters were established for the coatings to show high hardness onto the substrate, appropriate deposition time for polycrystalline growth and desired stoichiometry, as well as a stable layer thickness of ~ 3 µm. The physical and chemical properties of the coatings obtained were established by X-ray diffraction (XRD), X-ray photo-electron spectroscopy (XPS) and nanoindentation; the scanning electron microscopy (SEM) was used for the analysis of the fracture surfaces of the samples subjected to fatigue. The analysis of the fatigue behavior of the uncoated and coated substrates were performed under rotary bending conditions applying maximum alternating stresses in the interval of 55-70% of the ultimate strength value, i.e. from 479 to 610 MPa, respectively; the test was performed at room temperature. The study of the results established that the fatigue resistance properties increased for the three types of coated samples, TiCN, BCN and CrAlN, with values of 9.6%, 4.2% and 3.9%, respectively, calculated for 1x10 6 cycles. The highest value in fatigue life improvement corresponded to the TiCN coating, followed by BCN. This can be associated to the increase hardness present in the TiCN layer; this improved the mechanical properties of the coating. The examination of the fracture surfaces carried out in the tested samples (coated and uncoated), clearly demonstrate that the cracks produced by fatigue started in the surface of the coating and later propagated to the substrate. The mechanicals and fatigue results found in these ternary coatings deposited on AISI 1045 steel open a possibility of future applications in mechanical devices e.g. automotive applications that require high fatigue demands in service conditions.

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