The Influence of Silicon Carbide Powders on the Enhancement of the Wear Resistance of Epoxy Resin

2019 ◽  
Vol 813 ◽  
pp. 80-85
Author(s):  
Antonio Formisano ◽  
Massimo Durante ◽  
Antonio Langella
Keyword(s):  
Silicon Carbide ◽  
Wear Resistance ◽  
Epoxy Resin ◽  
Abrasive Wear Resistance ◽  
Particle Sizes ◽  
Wear Properties ◽  
Pin On Disc ◽  
Different Content ◽  
Hard Powder ◽  
Counterface Roughness

In order to improve wear properties of thermosetting resins, potential solutions are the reduction of the adhesion between the counterparts and the improvement of their hardness, stiffness and compressive strength. These goals can be achieved with success by using appropriate inorganic fillers. Concerning this, the present work shows the possibility to increase the abrasive wear resistance of an epoxy resin filled with hard powder. The filling is made by silicon carbide powders in different content and with different particle sizes. Abrasive tests, performed by means of a pin on disc apparatus, highlight that the wear of plain and reinforced resins increases both with the contact pressure between the counterparts and the counterface roughness. Moreover, the wear resistance of the filled resins increases with the increase of content and dimensions of the filling particles.

scholarly journals Research on wear resistance of poly-component composite materials 

2017 ◽  
Vol 63 (No. 3) ◽  
pp. 106-114
Author(s):  
Müller Miroslav ◽  
Kejval Jiří
Keyword(s):  
Silicon Carbide ◽  
Particle Size ◽  
Wear Resistance ◽  
Composite Materials ◽  
Abrasive Wear ◽  
Epoxy Resin ◽  
Polymeric Composite ◽  
Continuous Phase ◽  
Positive Influence ◽  
Abrasive Wear Resistance

The paper deals with the testing of composite materials based on corundum, silicon carbide and glass. The object of the experiments was a particle polymeric composite, whose continuous phase was in the form of a two-component epoxy resin and a discontinuous phase (reinforcing particles) of corundum, silicon carbide and glass of a specific particle size from 4.5 to 260 µm. The research was focused on the evaluation of abrasive wear resistance and hardness of the tested materials. A considerable improvement of the values obtained at measuring the abrasive wear resistance was reached at hybrid composite materials filled with three different components, when 98% improvement was reached compared to the epoxy resin without the filler. The hardness increased up to 35% by adding the filler. The particle size influenced properties of the polymeric composite as the particles of larger sizes bring a positive influence on the wear resistance and the hardness HBW 10/250/30.

Tribological properties of the epoxy resin-based solid lubricant coating modified by Kevlar fibers

2018 ◽  
Vol 70 (9) ◽  
pp. 1706-1713 ◽  
Author(s):  
Guotao Zhang ◽  
Yanguo Yin ◽  
Ting Xie ◽  
Dan Li ◽  
Ming Xu ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Epoxy Resin ◽  
Tribological Properties ◽  
Dry Friction ◽  
Friction And Wear ◽  
Solid Lubricant ◽  
Transfer Film ◽  
Wear Properties ◽  
Content Type ◽  
Friction And Wear Properties

Purpose This paper aims to obtain high mechanical and good tribological properties of epoxy resin-based coatings under dry friction conditions. Design/methodology/approach Bonded solid lubricant coatings containing Kevlar fibres were prepared by a spraying method. The friction and wear properties of the coatings were experimentally investigated with a face-to-face tribometre under dry friction conditions. Scanning electron microscopy, energy dispersive X-ray spectroscopy and 3D laser scanning technologies were used to characterise the tribological properties. The action mechanism of the Kevlar fibres on a solid lubricant transfer film was also analysed. Findings Adding Kevlar fibres can significantly improve the wear resistance of the coatings. When the Kevlar fibre content increases, the tribological properties of the coatings improve and then worsen. Superior properties are obtained with 0.03 g of Kevlar fibres. Appropriately increasing the load or speed is beneficial to the removal of the outer epoxy resin and the formation of a lubricant film. During friction, the solid lubricants wrapped in the epoxy resin accumulate on the surface to form a transfer film that shows a good self-lubricating performance. In the later friction stage, fatigue cracks occur on the solid lubricant film but cannot connect to one another because of the high wear resistance and the entanglement of the rod-like Kevlar fibres. Thus, no large-area film falls from the matrix, thereby ensuring the long-term functioning of solid lubricant coatings. Originality/value Epoxy resin-based solid lubricant coatings modified by Kevlar fibres were prepared, and their friction and wear properties were investigated. Their tribological mechanisms were also proposed. This work provided a basis for the analysis of the tribological properties and design of bonded solid lubricant coatings containing Kevlar fibres.

scholarly journals Microparticle composites on the basis of scrap utilizable in the field of agricultural production

2016 ◽  
Vol 61 (No. 2) ◽  
pp. 92-97
Author(s):  
P. Valášek ◽  
M. Brožek
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Epoxy Resin ◽  
Tribological Properties ◽  
Agricultural Production ◽  
Abrasive Wear Resistance ◽  
Considerable Decrease ◽  
Ferrous Metals ◽  
Exponential Increase ◽  
Worn Surface

For renovation of functional surfaces of machines and devices for agricultural production it is possible to use, in addition to conventionally used methods, polymers with fillers – composites. The presence of microparticles in the polymeric matrix improves substantially the abrasive wear resistance and hardness. This contribution describes tribological properties of epoxy resin filled with chips of ferrous metals – the change of volume losses increase in dependence on the pressure increase (load) having effect on the worn surface. From the carried out experiments the considerable decrease of filled resin losses is evident compared with the resin without filler. At the same time the exponential increase of volume losses with the increased load was quantified in the course of tribological tests.

THE ANALYSIS OF THE SELECTED PROCESSES OF THERMO-CHEMICAL HEAT TREATMENT OF 20MnCr5 STEEL IN THE CONTEXT OF ABRASIVE WEAR

Tribologia ◽  
2016 ◽  
Vol 269 (5) ◽  
pp. 183-193
Author(s):  
Wojciech TARASIUK ◽  
Mariusz LISZEWSKI ◽  
Bazyli KRUPICZ ◽  
Ewa KASPRZYCKA
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Thin Layer ◽  
Abrasive Wear ◽  
Abrasive Wear Resistance ◽  
Chemical Heat Treatment ◽  
Chemical Heat ◽  
Chrome Plating ◽  
Pin On Disc ◽  
Machine Parts

This paper presents the results of tribological tests performed on a T-11 pin-on-disc type, which made it possible to determine the intensity of abrasive wear of steel 20MnCr5 subjected to selected thermo-chemical heat treatments. The tested steel, after the hardening and tempering process, is characterized by high endurance parameters and is used on heavily loaded machine parts. It is frequently used for elements subjected to intense abrasion. The analysis involved the following: carburizing, boronizing, and various methods of diffusion chromizing. For large loads, it is advisable to apply boronizing or carburizing with hardening. Chrome plating entails a very thin layer of increased hardness, which is characterised by a low abrasive wear resistance at high loads.

Study on the Wear Resistance of Cast-Oozing Different Content of WC

2011 ◽  
Vol 239-242 ◽  
pp. 990-993
Author(s):  
Ai Qin Wang ◽  
Shu Li Wang ◽  
Jing Pei Xie
Keyword(s):  
Wear Resistance ◽  
Cast Iron ◽  
Iron Layer ◽  
Wear Properties ◽  
Metallurgical Bonding ◽  
The Matrix ◽  
Different Content

In this paper, the WC and high-Cr Cast Iron layer were obtained on the surface of ZG30Cr steel by casting-penetrating process, the organization and wear properties of penetrating layer were studied. The results show that the layer is dense, without pores, slag and other defects, the penetrating layer and substrate are metallurgical bonding. When 20 %WC and 80 % Cr-Fe with are added to permeability agent, the penetrating layer has the best wear resistance, is 11.3 times the matrix materials.

The Effect of Processes Parameters on the Abrasive Wear Resistance of Boronized AISI 1050 Steel

2016 ◽  
Author(s):  
Mete Han Boztepe ◽  
Melih Bayramoglu
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Mesh Size ◽  
High Hardness ◽  
High Strength ◽  
Constant Load ◽  
Abrasive Wear Resistance ◽  
Wear Testing ◽  
Wear Properties ◽  
Pin On Disk

Boronizing is one of the thermochemical surface treatment processes which is extensively used to obtain excellent mechanical properties such as high strength, very high hardness, good toughness and fracture toughness. In this study, AISI 1050 steel specimens have been subjected to pack boronizing process by using Ekabor 2 powder within the stainless steel seal container. The experiments were carried out at temperatures of 800 °C, 850 °C and 900 °C for 3, 6 and 9 hours to investigate the effect of these parameters on the wear resistance of boronized specimens. Pin-on-Disk wear testing is used to characterize wear properties of boronized specimens. Wear tests were performed at dry conditions under constant load of 30 N by using 220 mesh size Al2O3 abrasive paper. Different rotating speeds of the pin-on disk were selected as 300, 600, 900, 1200, 1500 revolutions for each of the test specimens. After the abrasive tests, weight losses of the specimens were measured to determine the abrasive wear resistance of boronized specimens. The results were also compared with unboronized and conventional hardened AISI 1050 steel specimens respectively.

Investigation on microstructures, mechanical and wear properties of Al 390/ZrO2 composite materials fabricated by P/M method

2020 ◽  
Vol 17 (1) ◽  
pp. 149-166
Author(s):  
Karthikeyan S ◽  
Karunanithi R ◽  
Ashoke Ghosh
Keyword(s):  
Wear Resistance ◽  
Wear Test ◽  
Matrix Alloy ◽  
Sem Analysis ◽  
High Wear Resistance ◽  
Wear Properties ◽  
Content Type ◽  
The Matrix ◽  
Pin On Disc ◽  
A390 Alloy

PurposeAluminium is the most proficiently and commonly used metal due to its desirable physical, chemical and mechanical properties. When Aluminium reinforced with hard ceramic particles, shows increased strength and good corrosion resistant and wear resistant qualities. In the present investigation, A390 + X vol. % Zro2 (X = 5, 10 and 15) composites have been fabricated through P/M technique.Design/methodology/approachAfter that the microstructural properties are tested by scanning electron microscope (SEM) analysis wear test is performed using pin-on-disc machine.FindingsThe wear conditions of applied load 30N and sliding velocity 1 m/s and track distance 1000m was followed. A390 + 15% Zro2 of surface of the composites unveiled greater hardness when compared with A390 alloy.Originality/valueA390 + 15% Zro2 exhibited superior wear resistance than that of the matrix alloy. Thus the material proves as an excellent solution for applications that requires high wear resistance.

Wear Properties and Surface Structure of Ion Implanted Glassy Carbon

1988 ◽  
Vol 100 ◽  
Author(s):  
Kazuo Yoshida ◽  
Kazuhiko Okuno ◽  
Gen Katagiri ◽  
Akira Ishitani ◽  
Katsuo Takahashi ◽  
...  
Keyword(s):  
Silicon Carbide ◽  
Wear Resistance ◽  
Mass Spectroscopy ◽  
Concentration Distribution ◽  
Amorphous Structure ◽  
Wear Properties ◽  
Depth Profiles ◽  
Secondary Ion ◽  
Wear Tests ◽  
Abrasive Paper

ABSTRACTWear properties of Li+, K+, C+, Cl+, and Ti+ implanted glassy carbons (GC) have been studied by wear tests using silicon carbide abrasive paper. It has been found that ion implantation is effective for improving wear resistance of GC. The measurements of Raman spectra revealed formation of an amorphous structure on the surface. Anomalous depth profiles with flat concentration distribution of Li and K atoms were observed by a secondary ion mass spectroscopy (SIMS). In conclusion. the formation of an amorphous structure seems to explain the improvement in wear resistance.

Abrasive Wear Characteristics of Ni-base Self-fluxing Alloy Spraywelding Overlays

1997 ◽  
Author(s):  
Z. Ding ◽  
R. Knight ◽  
R.W. Smith
Keyword(s):  
Wear Resistance ◽  
Abrasive Wear ◽  
Process Parameters ◽  
High Stress ◽  
Resistance Mechanisms ◽  
Abrasive Wear Resistance ◽  
Abrasive Medium ◽  
Hardness Tests ◽  
Pin On Disc ◽  
Wear Tests

Abstract The results of low stress, pin-on-disc and high stress grinding abrasive wear tests on coatings produced by plasma and oxy-acetylene flame spraywelding are presented. FNil5A and FNiWC35 Ni-based self-fluxing alloys were selected as typical spraywelding materials for abrasive wear resistance. The abrasive wear resistance mechanisms of welded overlays produced by various materials and processes were also characterized by hardness tests, microstructural and compositional analyses, and through analysis of the effect of different kinds of abrasive on the wear resistant of Ni-base self-fluxing spraywelding overlays. Results showed that FNiWC35 overlays exhibited improved resistance under low stress abrasion, but the relative wear resistances of FNiWC35 and FNil5A still depended primarily on the type and hardness of the abrasive medium used. For the same material, the abrasive wear resistance of oxyacetylene flame sprayed overlays was higher than that produced by plasma spraywelding. The wear resistance of the plasma spraywelding overlays depended not only on the material, but also strongly on the spraywelding process parameters.

scholarly journals Effects of Carbon Source on TiC Particles’ Distribution, Tensile, and Abrasive Wear Properties of In Situ TiC/Al-Cu Nanocomposites Prepared in the Al-Ti-C System

Nanomaterials ◽  
2018 ◽  
Vol 8 (8) ◽  
pp. 610 ◽  
Author(s):  
Yu-Yang Gao ◽  
Feng Qiu ◽  
Tian-Shu Liu ◽  
Jian-Ge Chu ◽  
Qing-Long Zhao ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Wear Resistance ◽  
Carbon Source ◽  
Abrasive Wear ◽  
Carbon Sources ◽  
Abrasive Wear Resistance ◽  
Wear Properties ◽  
In Situ Tic ◽  
Hybrid Carbon

The in situ TiC/Al-Cu nanocomposites were fabricated in the Al-Ti-C reaction systems with various carbon sources by the combined method of combustion synthesis, hot pressing, and hot extrusion. The carbon sources used in this paper were the pure C black, hybrid carbon source (50 wt.% C black + 50 wt.% CNTs) and pure CNTs. The average sizes of nano-TiC particles range from 67 nm to 239 nm. The TiC/Al-Cu nanocomposites fabricated by the hybrid carbon source showed more homogenously distributed nano-TiC particles, higher tensile strength and hardness, and better abrasive wear resistance than those of the nanocomposites fabricated by pure C black and pure CNTs. As the nano-TiC particles content increased, the tensile strength, hardness, and the abrasive wear resistance of the nanocomposites increased. The 30 vol.% TiC/Al-Cu nanocomposite fabricated by the hybrid carbon source showed the highest yield strength (531 MPa), tensile strength (656 MPa), hardness (331.2 HV), and the best abrasive wear resistance.

Sign in / Sign up

Export Citation Format

Share Document