Experimental and theoretical evaluations on the
In comparison to Pure EP (1.71 × 10 −4 mm 3 /m·N), the wear rates of GO/EP (0.97 × 10 −4 mm 3 /m·N) and PGO/EP (0.5 × 10 −4 mm 3 /m·N) are 43% and 71%, respectively. SEM images of wear marks and wear information of GGr15 steel balls have been collected in Fig. S3 and Table S1. In comparison, the wear depth, wear width, and …
Wear-resistance enhancement of graphene …
Abstract. In this work, large-size and ultra-thin two-dimensional (2D) zirconia nanosheets (ZrO 2 NSs) were firstly synthesized by wet chemical template method, and …
Outstanding high-temperature oxidation- and wear-resistance …
The above analysis demonstrates that the oxide layer formed on the wear scar surface of WC-12Co-3ZrO 2 has a better oxidation resistance and load-bearing capacity than that on WC-12Co, which can protect the material from further oxidation and severe wear at high temperatures. In order to reveal the effect of anti-oxidation …
Friction Induced Wear of Rapid Prototyping …
This paper reviews friction-related wear phenomena and the corresponding deterioration mechanisms of RP-generated components as well as the potential of …
Wear and corrosion resistance of self-healing epoxy
In order to obtain a microcapsule self-healing coating with outstanding wear and corrosion resistance, a novel double-walled microcapsule filling epoxy resin (EP) coating was fabricated by assembling graphene oxide (GO) onto the outer shell layer of polysulfone (PSF) through polydopamine (PDA) modification. The surface of the as …
(PDF) Development of a Method for Evaluating Alumina
Amethod is developed for rapid evaluation of the wear resistance of ceramic materials by changing the roughness parameter Rt. The method is tested successfully on samples of alumina ceramics made ...
Microstructures and mechanical properties of wear-resistant …
Our results also demonstrated that the hardness and wear resistance of the oxide coatings were up to four and ten times higher than that of the substrate. Introduction Titanium (Ti) alloys have been widely used in automobile, military, aeronautical, energy and biomedical industries attributing to their high specific strength, excellent ...
Selecting a Rapid Prototyping Process
Prototyping Attributes Chemical Resistance: resistance to chemicals including acids, bases, hydrocarbons, fuels, etc. Mechanical Properties: strength of the part measured by …
Development of a Method for Evaluating Alumina Ceramic
Aluminum oxide ceramic abrasive wear. In the majority of cases a characteristic feature of the material wear resistance is the value of hardness H, but in order to consider deformation resistance without catastrophic breakdown it is necessary to draw attention to the value of Young's modulus, determined by the parameter for wear …
Healable Anti-Corrosive and Wear-Resistant Silicone-Oil …
Plasma electrolytic oxidation (PEO) is a surface treatment technology that forms a very stable porous oxide film on base metals using a discharge phenomenon in the electrolyte [].A high voltage induces a spark or arc plasma discharge, creating a local high-temperature spot in the electrolyte, enabling oxidation of the metal and the rapid melting …
Friction-induced rapid amorphization in a wear-resistant …
The initial hardness of the (CoCrNi) 88 Mo 12 MEA is not high enough, however, its wear rate has decreased to the high wear-resistant level of hard materials. To conclude, cryogenic friction-induced amorphization is an effective way to achieve rapid and large-scale amorphization, which would be a potential method designing wear-resistant …
Graphene-enhanced, wear-resistant, and thermal …
The wear resistance and thermal conductivity of the composite coating were enhanced through the inclusion of boron nitride and graphene. ... This is the reason gelcoat boron nitride coating and gelcoat graphene coating showed shorter icing delay time after wear in Fig. 8a, b. Rapid freezing causes more air pockets to become trapped …
Effects of Rare Earths on Microstructure and Wear Resistance …
The appropriate amount of REE significantly improves the wear resistance of the material, making the wear mechanism change from complex to simple abrasive wear. In the Mg-1.5Zn-0.6Zr alloy [ 93 ], the Vickers hardness increased from 54 HV to 60 HV, and the COF decreased from 0.132 to 0.127 as the addition of Sc element increased to 1.0 …
Role of ZrO2 oxide layer on the fretting wear resistance of a …
ZrO 2 oxide layers formed in high temperature pressurized water have beneficial effects for improving the fretting wear resistance of Zry-4 fuel cladding. (2) The grid springs and dimples exposed to high temperature water maintained their stiffness regardless of the formation of surface oxides and hydrogen pickup.
Performance of wear resistant MCrAlY coatings with oxide dispersion
The formation of thick tribo-oxide glazes mitigates adhesive wear of CoNiCrAlY-based coatings. • ODS CoNiCrAlY coatings have good sliding wear resistance when the glaze doesn't spall off. • Dispersed Al 2 O 3 particles can either improve or impair the stability of the glaze. • The glaze was best supported and stabilized by a 30 wt% Al 2 …
Reactive wear protection through strong and …
The reactive wear protection strategy offers a pathway for designing ultra-wear resistant alloys, where otherwise brittle oxides are turned to be strong and deformable for …
Microstructures and Wear Resistance of Mo Coating …
In order to solve the problems of high porosity and poor wear resistance of molybdenum (Mo) coating deposited by atmospheric plasma spraying (APS), the in situ laser-assisted plasma spraying (LAPS) technology was adopted to prepare Mo coating, and the effect of laser power on the microstructure, phase composition, microhardness and …
Microstructure and wear resistance of laser cladding …
To improve the wear resistance of TC4 and mitigate surface cracking defects in laser cladding NiCrAlY/TC4 composite coatings, thermal boundary conditions were altered and in-situ generation of enhanced phase transition layers was employed during laser cladding. The microstructure, hardness, and wear behavior were characterized. …
Recent Progress on Wear‐Resistant Materials: Designs, …
With the rapid development in wear‐resistant materials and their substantial impact on energy consumption, it is of great significance to offer a timely review on the recent developments of these materials. This paper presents a comprehensive review addressing critical issues related to novel designs, key properties, and wide …
Microstructures and mechanical properties of wear-resistant …
The solidified oxide coatings had exceptionally high fracture strengths due to the lack of critical defects, and superior wear resistance to the substrate owing to their high hardness. The fracture strengths of T1 and T2 coatings were 10.53 ± 1.61 GPa and 11.28 ± 1.02 GPa, respectively.
Improved wear resistance of AISI-1045 steel by hybrid …
The thickness of the oxide layer is 1.5 µm and 2 µm. The presence of a white layer causes abrasive wear of sample, whereas sample with post-oxidation shows outstanding wear resistance with adhesive wear mechanism. The friction coefficient of the nitrided sample is further reduced by plasma post-oxidation.
Enhancing wear resistance: In-situ ceramic phase …
The introduction of nitrogen resulted in an increase in the wear resistance of the 4 sccm film, preventing wear-through and reducing the wear rate to 7.79 × 10 −6 mm 3 N −1 m −1. Further increasing the nitrogen flow led to a decrease in the wear rate of the film to 4.04 × 10 −6 mm 3 N −1 m −1 .
A Micro-Nano Structure Formed by SiC/Graphene Oxide Self …
In air and railway transportation, corrosion and wear lead to the rapid failure of equipment. Epoxy (EP)-based coatings are widely used in research on the anti-corrosion of organic coatings, but their application as materials for wear resistance is limited due to their non-abrasive properties. In this study, a novel high-performance epoxy-based …
Improvement of high-temperature wear resistance of Zr …
Zhou et al. reported that the thickness of the wear-resistant oxide layer of Zr-based BMG after oxidation treatment was increased by the addition of the rare earth element lutetium, which significantly enhanced the wear resistance of oxide-treated Zr-based BMG [36]. Many studies have been reported that the increased thickness of the …
Combined effect of Y2O3 nanoparticles and Si second-phase oxide …
Alloy steel 17Cr2NiSiMo coatings with small amounts (<1 wt%) of added Y 2 O 3 nanoparticles are fabricated by plasma-transferred arc. The combined effect of the Y 2 O 3 nanoparticles and Si-oxide second-phase particles on microstructure, sliding wear resistance, and wear weight loss of the alloy steel coating are investigated. The Y …
Microstructure and wear resistance of in situ TiC-reinforced …
Strengthening low-chromium iron-based alloys with multiple alloy elements is a crucial strategy for developing "casing-friendly" hardbanding materials. In this paper, four kinds of low-chromium iron-based hardfacing alloys with different Ti contents were prepared by flux-cored arc welding technology, and the effect of Ti content on the …
Effect of temperature on tribo-oxide formation and the fretting wear
The poor wear resistance of γ-Fe 2 O 3 and NiO is offset, to a certain extent, by the presence of Nb 2 O 5 and ZrO 2 on the counter part. As reported in Ref. [19], ZrO 2 on ZrO 2 has relatively low fretting wear coefficient. 3.2. Fretting tests conducted at bulk contact temperature (T bc) of 150 °C
Microstructure and wear resistance of oxide coatings on …
The high wear resistance of the coatings can be explained by investigating the worn surface of the specimens. The wear scar on the uncoated substrate surface is clear even at low magnification (Fig. 5 a), but there is no clear evidence of wear damage on the surface of the PEO coated specimen at larger magnifications (Fig. 5 c). To recognize …
Enhanced wear resistance and surface properties of oxide …
1. Introduction. Titanium and its alloys have been widely used to fabricate various implants and medical products due to their low density-to-weight ratio, excellent biocompatibility and superior corrosion resistance [1, 2].Until recently, Cp-Ti (α) and Ti-6Al-4V (α + β) alloy have been preferred in medical applications such as dental implants, …
What is Wear-resistant Materials
Wear-resistant Materials. In general, wear is mechanically induced surface damage that results in the progressive removal of material due to relative motion between that surface and a contacting substance or substances. A contacting substance may consist of another surface, a fluid, or hard, abrasive particles contained in some form of fluid or ...
