Esteban Broitman
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Advanced Nodular Thin Dense Chromium Coating: Superior Corrosion Resistance Open
Chromium-based functional coatings (CFCs) are widely recognized for their outstanding wear and corrosion resistance across diverse industrial sectors. However, despite advancements in deposition techniques and microstructural enhancements,…
Microstructural, Nanomechanical, and Tribological Properties of Thin Dense Chromium Coatings Open
Nowadays, Thin Dense Chromium (TDC) coatings are being industrially used in rolling bearings applications due to their claimed advantages such as high hardness, low wear, and good corrosion resistance. However, despite their broad commerci…
Comparison of Various Conversion Layers for Improved Friction Performance of Railway Wheel-End Bearings Open
With a growing global railway market which needs to reduce its energy consumption and emissions, railway wheel-end bearing units are being optimized to further reduce power losses with no compromise on reliability. One of the different sol…
Bi2S3 and MoS2 Soft Coatings: A Comparative Study of Their Frictional Behavior Under Different Humidity Levels, Contact Stresses, and Sliding Speeds Open
Bi 2 S 3 is a promising solid lubricant for demanding applications, such as oil extraction, heavy mining, and aerospace components. However, so far its tribological behavior has not been studied in depth. Bi 2 S 3 soft coatings were evalua…
Adaptive hard and tough mechanical response in single-crystal B1 VNx ceramics via control of anion vacancies Open
High hardness and toughness are generally considered mutually exclusive properties for single-crystal ceramics. Combining experiments and ab initio molecular dynamics (AIMD) atomistic simulations at room temperature, we demonstrate that bo…
Micro and Macro-Tribology Behavior of a Hierarchical Architecture of a Multilayer TaN/Ta Hard Coating Open
The micro- and macro-tribological behaviors of a novel hierarchical TaN/Ta coating deposited on Ti6Al4V biomedical alloy by direct current magnetron sputtering were analyzed in the present work. This analysis was associated with the morpho…
Tribological and nanomechanical properties of a lignin-based biopolymer Open
A research is reported on the nanomechanics and tribology of the Arboblend V2 Nature biopolymer (a 100% bio-based material, biodegradable, or resistant depending of application), being a mixture of different biopolymers such as lignin, pol…
Nanotribological behavior of deep cryogenically treated martensitic stainless steel Open
Cryogenic treatments are increasingly used to improve the wear resistance of various steel alloys by means of transformation of retained austenite, deformation of virgin martensite and carbide refinement. In this work the nanotribological …
Synthesis and properties of CS<sub><i>x</i></sub>F<sub><i>y</i></sub>thin films deposited by reactive magnetron sputtering in an Ar/SF<sub>6</sub>discharge Open
A theoretical and experimental study on the growth and properties of a ternary carbon-based material, CS x F y , synthesized from SF6 and C as primary precursors is reported. The synthetic growth concept was applied to model the possible s…
View article: Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview
Indentation Hardness Measurements at Macro-, Micro-, and Nanoscale: A Critical Overview Open
The Brinell, Vickers, Meyer, Rockwell, Shore, IHRD, Knoop, Buchholz, and nanoindentation methods used to measure the indentation hardness of materials at different scales are compared, and main issues and misconceptions in the understandin…