Surface Engineering for Tribology

Straffelini, Giovanni

doi:10.1007/978-3-319-05894-8_7

Cited by 3 publications

(3 citation statements)

References 36 publications

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“…Therefore, the friction coefficients and wear rates of the as-treated surfaces are lower than those of the substrate. In addition, according to the theory of tribological materials and surface engineering, , the local adhesion is another factor affecting the friction behavior between surfaces. The wear debris of the surface can be stored in the rough microstructure, avoiding the debris adhering to the surface and increasing friction force.…”

Section: Resultsmentioning

confidence: 99%

Constructing Colorful Surfaces with Mechanical Robustness for Magnesium Alloys via a Reagent-Free Method

Лю

Lei

et al. 2020

ACS Appl. Mater. Interfaces

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The colorful and mechanically robust surfaces of metallic materials are important for their applications in electronics, automobile, aerospace, and so on, but it is challenging to prepare them at a reasonable cost. Herein, we propose a simple, environment-friendly, and cost-effective method, reagent-free hydrothermal treatment, to prepare colorful surfaces of magnesium alloys with mechanical robustness. The as-treated surface mainly composes of magnesium (hydr)oxides with a biomimetic microstructure, whose thickness and roughness increase linearly with the hydrothermal time. By adjusting the hydrothermal time, a series of surface colors of magnesium alloys are obtained because of light interference. The as-treated surface with film thickness more than 1.1 μm exhibits high Vickers hardness (∼500 HV), low friction coefficient (∼0.26), and low wear rate (1.06 × 10–5 mm3·N–1·m–1), which is superior to most magnesium alloys after surface treatments. The microstructure of the as-treated surface can be retained after harsh tribological tests, demonstrating attractive mechanical robustness. Furthermore, the method proposed here was extended to the surface treatments of other series of magnesium alloys, which verifies the great potential of this method for large-scale industrial application of colorful metallic materials with mechanical robustness.

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Section: Resultsmentioning

confidence: 99%

Constructing Colorful Surfaces with Mechanical Robustness for Magnesium Alloys via a Reagent-Free Method

Лю

Lei

et al. 2020

ACS Appl. Mater. Interfaces

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“…One can clearly see that the friction coefficient of a given coating at the higher load of 550 g is lower (within the appropriate load range). According to the theory of tribological materials and surface engineering, − the friction coefficient involves two main influencing factors: molecular attraction and overcoming mechanical engagement. That is, there is molecular attraction in the actual contact area, which will cause local adhesion.…”

Section: Resultsmentioning

confidence: 99%

Multiphase Ceramic Coatings with High Hardness and Wear Resistance on 5052 Aluminum Alloy by a Microarc Oxidation Method

Qin

Yang

et al. 2018

ACS Sustainable Chem. Eng.

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High-hardness and wear-resistant ceramic coatings were obtained on 5052 aluminum alloy by the microarc oxidation (MAO) process in silicate electrolytes with different nanoadditives (TiO2, Si3N4), and the effects of different nanoadditives on the microstructural and mechanical properties of the ceramic coatings were systematically studied. The microstructure results revealed that the nanoadditives could improve the thickness and compactness of the ceramic coatings. The X-ray diffraction results demonstrated that the nanoadditives were successfully incorporated into the MAO coatings and that some new phases of Si2N2O and TiN were formed, enhancing the comprehensive performance of the ceramic coatings. Furthermore, the distributions of elements determined from energy-dispersive X-ray (EDX) spectroscopy and cross-sectional images displayed a good homogeneity to support the excellent mechanical properties of the ceramic coatings. Therefore, the average microhardness, the full indentation force–depth curves, the hardness and elastic modulus, and the H/E and H 3/E 2 ratios of the ceramic coatings with TiO2 and TiO2 + Si3N4 nanoadditives delivered a very high hardness, implying good antifriction properties. Moreover, the friction coefficients of the ceramic coatings also demonstrated their outstanding wear resistance. Finally, the corrosion resistance and electrochemical impedance spectroscopy results further revealed the compactness of the ceramic coatings, indicating a high hardness and abrasion resistance.

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“…[ 17 ] In addition to the initial test conditions such as normal force, contact geometry, sliding distance, and speed, the properties of the active surface have a high influence in tribo testing. [ 18 ] This includes manufacturing‐induced parameters such as surface roughness [ 19,20 ] as well as inherent material properties like hardness, microstructure, and composition. [ 21–24 ] Steel materials account for a large proportion of the tribomaterials currently in use.…”

Section: Introductionmentioning

confidence: 99%

Wear of Tailored Forming Steels

et al. 2023

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This study investigates the wear behavior of additively welded cladding layers on less wear‐resistant base materials using plasma‐transferred arc welding and laser hot‐wire cladding. The cladding layers are made from atomized AISI 52100, AISI 5140, and a stainless steel with (0.52 wt% C, 0.9 wt% Si, 14 wt% Cr, 0.4 wt% Mo, 1.8 wt% Ni, 1.2 wt% V, bal. Fe) on unalloyed steel AISI 1022M as the base material. The specimens' microstructure and surface hardness are comparable with conventional specimens of monolithic AISI 52100 and AISI 4140, which is used as a reference. Tribometer tests are carried out in ball‐on‐disk configuration to investigate the wear resistance of the specimen. The multimaterial specimens show comparable wear behavior to their monolithic counterparts, and a good performance of the stainless specimen in pure sliding is proven. These findings suggest that additive manufacturing processes can be used to clad less wear‐resistant base materials and achieve high wear resistance, making it possible to exploit the advantages of surface coatings under severe wear conditions.

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Surface Engineering for Tribology

Cited by 3 publications

References 36 publications

Constructing Colorful Surfaces with Mechanical Robustness for Magnesium Alloys via a Reagent-Free Method

Constructing Colorful Surfaces with Mechanical Robustness for Magnesium Alloys via a Reagent-Free Method

Multiphase Ceramic Coatings with High Hardness and Wear Resistance on 5052 Aluminum Alloy by a Microarc Oxidation Method

Wear of Tailored Forming Steels

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