Study on Erosion Wear Behavior of PDCPD/MMT Nanocomposite

2010 ◽  
Vol 123-125 ◽  
pp. 231-234 ◽  
Author(s):  
Bing Li Pan ◽  
Ya Li Xing ◽  
Chun Fei Zhang ◽  
Yu Qing Zhang
Keyword(s):  
Wear Mechanism ◽  
Erosion Rate ◽  
In Situ Polymerization ◽  
Wear Behavior ◽  
Engineering Application ◽  
Erosion Wear ◽  
Fatigue Wear ◽  
Brittle Rupture ◽  
Sand Erosion ◽  
Mechanical Cutting

Polydicyclopentadiene (PDCPD)/montmorillonite Clay (MMT) nanocomposites were synthesized through reaction injection molding with a Gusmer-Decker machine by in situ polymerization. The results of X-ray diffraction (XRD) diagrams of the nanocomposites showed that MMT were completely exfoliated within the range of 0.25% to 4% MMT. The erosion wear behaviors of PDCPD/MMT nanocomposites were studied using an MCF-30 water and sand erosion wear tester. The worn surface of PDCPD/MMT nanocomposites was exami-ned with a scanning electron microscope (SEM) and the wear mechanism was discussed.It was found that when the content of MMT is 0.25%, the erosion rate of nanocompositesreach the minimum; the erosion rate of nanocomposites increases with the increase of MMT content compared with neat PDCPD. The important wear mechanism of neat PDCPD was tearing and ploughing-cutting, And the results showed that wear mechanism of PDCPD/MMT nanocomposites was dominated by ploughing-cutting, with the increase of MMT the severe mechanical cutting, fatigue wear and slight brittle rupture appear. PDCPD/MMT nanocomposites with a lower content of MMT were thus a promising structural material candidate for engineering application.

Erosion Wear Behavior of Coatings with Growth Defects Produced by Ion Beam Enhanced Pulsed Filtered Vacuum Arc Deposition

2010 ◽  
Vol 97-101 ◽  
pp. 1527-1531 ◽  
Author(s):  
Feng Fang Wu ◽  
Jian Xin Deng ◽  
Pei Yan ◽  
Wen Long Song
Keyword(s):  
Erosion Rate ◽  
Wear Behavior ◽  
Ion Beam ◽  
Hard Metal ◽  
Solid Particles ◽  
Wear Loss ◽  
Erosion Wear ◽  
Growth Defects ◽  
Tin Coatings ◽  
Arc Deposition

The erosion wear behavior of TiN coatings with growth defects was studied. The TiN coatings were produced on a hard metal by ion beam enhanced pulsed filtered vacuum cathode arc deposition. The erosion wear was tested with a gas blast apparatus. In the test, TiN coatings were impacted at an impingement angle of 90° by angular SiC solid particles with an average diameter of 124um. The maximum depth of the erosion scar measured by the optical profiler was used to evaluate the erosion wear loss of the coatings. The coatings proved to have much lower erosion rate than that of the substrate material and consequently, the erosion rate increased significantly to the high level of the hard metal substrate after the coatings were penetrated. The failure mechanism was revealed by examining the surface morphologies of the coatings before and after the erosion test. The erosive wear of the TiN coatings with growth defects behaved as typical brittle materials. The damage mechanism of the coatings with growth defects was described.

Research on the Wear Morphologies of NBR/FKM Blend under Dry Friction

2012 ◽  
Vol 602-604 ◽  
pp. 2197-2200
Author(s):  
Rui Nie ◽  
Shi Jie Wang ◽  
Xiao Ren Lv ◽  
Yu Zeng Zhang ◽  
Rui Zhan
Keyword(s):  
Working Conditions ◽  
Wear Mechanism ◽  
Dry Friction ◽  
Room Temperature ◽  
Wear Behavior ◽  
Gas Content ◽  
Dry Sliding ◽  
Oil Well ◽  
Fatigue Wear ◽  
Better Than

At the beginning stage of the progressing cavity pump (PCP) operation or working in the oil well with high gas content, the stator and rotor of PCP usually operate under dry sliding. Analyzing the wear morphology of stator rubber and discussing wear mechanism are very important for choosing the best stator rubber for different working conditions, which is directly related to the service life of PCP. Wear behavior of NBR/FKM blend rubber (10:0、3:7、7:3、8:2、0:10) was investigated at room temperature using a MPV-600 ring-on-block tester under dry sliding. The wear morphology of blend was analyzed through the stereomicroscope and the wear mechanism was also discussed. The results show that different blend own different wear mechanism. The wear mechanism of NBR/FKM=8:2 blend rubber is fatigue wear, which is better than the others under dry friction.

scholarly journals Erosion Wear Behavior of SiC Nano Powder Filled Flax and Sisal Fabric Hybrid Composites with Taguchi Experimental Design

2019 ◽  
Vol 8 (2) ◽  
pp. 111-115
Keyword(s):  
Erosion Rate ◽  
Filler Content ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Taguchi Experimental Design ◽  
Erosion Wear ◽  
Impingement Angle ◽  
Significant Control ◽  
Control Factors ◽  
Nano Powder

This work is carried out to find out the erosion wear characteristics of unfilled and also SiC nanopowder filled flax and sisal fabric hybrid composites (FSHC). Effect of different parameters such as filler content, impingement angle and erodent size on the erosion wear behavior of hybrid composite has been studied using Taguchi method. Significant control factors altering the erosion rate have been evaluated through outstanding execution ANOVA. The experimental outcomes are recognized to be in acceptable accord with the assumptive values. This study indicates that erosion wear resistance increases as SiC nanopowder increases in FSHC

Tribological behavior and wear mechanism of Cu/CF/phenolic resin sandwich composites under current

2020 ◽  
pp. 152808372096669
Author(s):  
Enhao Dai ◽  
Guangzhen Li ◽  
Guixia Lu ◽  
Wen Wang ◽  
Zhengde Han ◽  
...  
Keyword(s):  
Wear Mechanism ◽  
Phenolic Resin ◽  
Wear Behavior ◽  
Erosion Wear ◽  
Arc Erosion ◽  
Current Transmission ◽  
Contact Strip ◽  
Oxidation Wear ◽  
Traction Power ◽  
Lower Resistivity

The catenary system was an important part of electrified railway, which provided traction power for electric trains. Cu/CF/phenolic resin contact strip (CFRCS) had been designed with excellent mechanical strength and electrical conductivity. The properties of CFRCS and the pure carbon contact strip (PCCS) were also compared. It could be found that CFRCS not only had higher impact strength than PCCS, but also had lower resistivity, which was favorable for current transmission. This paper analyzed the wear behavior of contact strips from two aspects of wear data and abrasive dust, which was mainly determined by the current and its components. The current-carrying wear mechanism of CFRCS was mainly arc erosion wear, oxidation wear and adhesive wear, while that of PCCS was oxidation wear and arc erosion wear.

Impact of Particles on Ductile Substrate

2005 ◽  
Author(s):  
Wing Cheng ◽  
Shigeru Itoh
Keyword(s):  
Finite Element ◽  
Stress State ◽  
Wear Behavior ◽  
Erosion Wear ◽  
Fatigue Wear ◽  
Hard Particles ◽  
Nonlinear Transient ◽  
Ductile Substrate ◽  
Impact Angles ◽  
The Impact

The purpose of this research is to obtain a better understanding of the stress state in ductile substrate due to impact of hard particles. Impact dynamic finite element analyses were performed using a nonlinear transient finite element code. In this phase of the research, only rounded particle is considered. Other considerations include impact angles and velocities. Resulting stress state at various locations of the impact region was studied. Results provide insights into the mechanisms for erosion wear and are used to explain erosion wear behavior in ductile substrate. A wear relation was developed to include the fatigue wear mechanism.

Erosion Wear Behavior of Natural and Industrial Material for Polymer Matrix Composite by Using Taguchi Analysis

2020 ◽  
Vol 38 (7A) ◽  
pp. 1016-1025
Author(s):  
Marwa S. Atallah
Keyword(s):  
Epoxy Resins ◽  
Erosion Rate ◽  
Wear Behavior ◽  
Weight Fraction ◽  
Experimental Designs ◽  
Erosion Wear ◽  
Fiber Glass ◽  
Taguchi Analysis ◽  
Industrial Material ◽  
Sand Size

The behavior of the erosion wear for samples manufactured by hand layup method of epoxy-supported fiberglass, eggshells and calcium carbonate particles were investigated. The test was performed in accordance with the experimental designs Taguchi (L 9) MINITAB (19) to select samples that have the resistance to erosion under the influence of factors. The erosion rate was assessed under the influence of three factors: weight fraction (2% to 8% eggshells and CaCO3 particles), sand size (450, 650, 850 µm) and angles (30º, 60º, 90º) with a fixed face distance of 30 cm, 10 hours and a flow rate of 45 L/min. The results revealed that the rate of erosion is lower for samples consisting of enhanced epoxy resins (eggshell molecules and CaCO3) with chopped fiber glass compared to unfilled samples. Also from these results, it should be noted that the maximum erosion rate was when the weight fraction (2%), the sand size of 850 µm and the angle of 90º, while the minimum rate of erosion was when weight fraction (8%), sand size 650 µm and 30º angle. In this work, the sample of composite materials behaves in a semi- ductile manner.

scholarly journals An Investigation of the Erosion Wear of Pitched Blade Impellers in a Solid-Liquid Suspension

10.14311/1031 ◽  
2008 ◽  
Vol 48 (4) ◽  
Author(s):  
T. Jirout ◽  
I. Fořt
Keyword(s):  
Wear Rate ◽  
Wear Mechanism ◽  
Pitch Angle ◽  
Erosion Rate ◽  
Solid Particles ◽  
Erosion Wear ◽  
Water Suspension ◽  
Liquid Suspension ◽  
Turbulent Flow Regime ◽  
Solid Liquid

This paper reports on a study of the erosion wear mechanism of the blades of pitched blade impellers in a solid-liquid suspension in order to determine the effect of the impeller speed n as well as the concentration and size of the solid particles on its wear rate. A four-blade pitched blade impeller (pitch angle α = 30°), pumping downwards, was investigated in a pilot plant fully baffled agitated vessel with a water suspension of corundum. The results of  experiments show that the erosion wear rate of the impeller blades is proportional to n2.7 and that the rate exhibits a monotonous dependence (increase) with increasing size of the particles. However, the erosion rate of the pitched blade impellerreaches a maximum at a certain concentration, and above this value it decreases as the proportion of solid particles increases. All results of the investigation are valid under a turbulent flow regime of the agitated batch.

scholarly journals The erosion wear mechanism of liquid-solid two-phase high pressure manifold tee pipes

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
H. Zhang ◽  
J. Zhang ◽  
L. Lv
Keyword(s):  
High Pressure ◽  
Shear Stress ◽  
Wall Shear Stress ◽  
Wear Mechanism ◽  
Erosion Rate ◽  
Fluid Velocity ◽  
Erosion Wear ◽  
Two Phase ◽  
Geometry Model ◽  
Wall Shear

The wall thickness of pressure pipe is often thinned due to the erosion wear, which leads to pipe failure and even safety accidents. In particular, the tee pipe is more prone to be erosive as a key component of transferring fluid with particles. Therefore, the erosion wear mechanism of high pressure manifold tee pipe based on liquid-solid two-phase flow is studied in this paper. Firstly, the standard tee pipe geometry model is established and the grid is divided. And then grid number independence is verified by the percentage difference. According to the structural characteristics of tee pipe, the wear of the inner wall under four different port combinations is predicted. In addition, the relationship between erosion rate and wall shear stress is further analyzed by fluid velocity, particle diameter and mass flow rate. Double tee pipes geometry model was established to explore the erosion wear on the inner walls. The effects of assembly length and different port combinations on erosion wear were discussed respectively. When the inlets are fixed, the wall shear stress distribution of the downstream tee pipe is mainly affected by the outlets. The assembly length mainly affects the erosion rate of the downstream tee pipe.

Effect of CeO2 addition on microstructure and tribological characteristics of laser cladded Cu10Al–MoS2 coating under oil lubrication

2021 ◽  
pp. 146442072110309
Author(s):  
Shao Lifan ◽  
Ge Yuan ◽  
Kong Dejun
Keyword(s):  
Abrasive Wear ◽  
Wear Mechanism ◽  
Mass Fraction ◽  
Friction Reduction ◽  
Depth Of Field ◽  
Oil Lubrication ◽  
Wear Properties ◽  
Fatigue Wear ◽  
Wear Rates ◽  
Mass Fractions

In order to improve the friction and wear properties of Cu10Al–MoS2 coating, the addition of CeO2 is one of the present research hot spots. In this work, Cu10Al–MoS2 coatings with different CeO2 mass fractions were successfully fabricated on Q235 steel using a laser cladding. The microstructure and phase compositions of obtained coatings were analyzed using an ultra-depth of field microscope and X-ray diffraction, respectively. The friction-wear test was carried out under oil lubrication using a ball-on-disk wear tester, and the effects of CeO2 mass fraction on the microstructure, hardness, and friction-wear properties were studied, and the wear mechanism was also discussed. The results show that the laser cladded Cu10Al–MoS2 coatings with the different CeO2 mass fractions were mainly composed of Cu9Al4, Cu, AlFe3, Ni, MoS2, and CeO2 phases. The Vickers-hardness (HV) of Cu10Al–8MoS2–3CeO2, Cu10Al–8MoS2–6CeO2, and Cu10Al–8MoS2–9CeO2 coatings was 418, 445, and 457 HV0.3, respectively, which indicates an increase in hardness with the increase of CeO2 mass fraction. The average coefficients of friction (COF) and wear rates decrease with the increase of CeO2 mass fraction, presenting the outstanding friction reduction and wear resistance performances. The wear mechanism of Cu10Al–MoS2 coatings is changed from abrasive wear with slight fatigue wear to abrasive wear with the increase of CeO2 mass fraction.

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