Effect of Nano TiO2/Clay on the Erosive Wear Behavior of Basalt-Epoxy Hybrid Composites at Elevated Temperatures

2015 ◽  
Vol 813-814 ◽  
pp. 40-45 ◽  
Author(s):  
C R Mahesha ◽  
Shivarudraiah ◽  
C. Rajesh Chandra ◽  
R. Suprabha
Keyword(s):  
Impact Velocity ◽  
Erosion Rate ◽  
Elevated Temperatures ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Erosive Wear ◽  
Wear Test ◽  
Normal Incidence ◽  
Filler Concentration ◽  
The Impact

Materials added to the matrix help improving operating properties of a composite. In the last few years, nanofiller /polymer composite have been widely investigated because of their outstanding multifunctional properties. In order to improve the erosive wear resistance of composite, an attempt was made to use nanoTiO2 and nanoclay as filler for the basalt reinforced epoxy composite (BE). The impact velocity, filler concentration and temperature are the parameters used for the study. The composites were fabricated using vacuum assisted resin infusion technique (VARI) technique. The fabricated composite specimens were tested by using erosive wear test rig as per ASTM G76 under normal incidence. The result shows that the erosion rate increases with increase in temperature and impact velocity. However, nanoTiO2-filled BE composite exhibits lower erosion rate as compared to Nanoclay filled and unfilled composite. The morphology of eroded surfaces was examined by using scanning electron microscopy (SEM).

scholarly journals Study of the microhardness and erosive wear behavior of organo-modified nanoclay filled glass-epoxy composites and optimization

2019 ◽  
Vol 13 (2) ◽  
pp. 4794-4815
Author(s):  
Z. Shanti Kiran ◽  
V. Suresh Babu ◽  
K. V. L. Soma Shekar
Keyword(s):  
Orthogonal Array ◽  
Erosion Rate ◽  
Erosion Resistance ◽  
Wear Behavior ◽  
Glass Fibers ◽  
Erosive Wear ◽  
Wear Test ◽  
Clay Content ◽  
Fiber Volume ◽  
Weight Content

This research concentrates on examination and optimization of microhardness and erosion resistance of epoxy-glass-nanoclay composites (EGCN’s). The parameters considered were the weight content of Cloisite 15A (A), the volume of glass fiber (B), and the direction of glass fibers (C). Hand lay-up technique was used to make the composites and tested for microhardness and erosive wear as per ASTM standards. The L9 orthogonal array was utilized to design the microhardness tests and erosive wear test, and it was noted that the composite with high clay content, low fiber volume, and 45° orientation had shown low erosion rate (Er) even though its hardness was lesser than the optimized value. At the optimum composition corresponding to the lowest Er, further erosion studies were conducted with the L18 orthogonal array for optimizing machine testing parameters. Scanning electron microscopy (SEM) was used to explain the effect of each parameter on the output. This research gives a thought regarding the consolidated effect of A, B, and C on the erosion resistance of the EGCN’s and the effect of testing parameters.

scholarly journals Impact-sliding wear response of 2.25Cr1Mo steel tubes: Experimental and semi-analytical method

Friction ◽  
2021 ◽  
Author(s):  
Meigui Yin ◽  
Chaise Thibaut ◽  
Liwen Wang ◽  
Daniel Nélias ◽  
Minhao Zhu ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Power Plants ◽  
Mechanical Response ◽  
Wear Behavior ◽  
Wear Test ◽  
Steel Tube ◽  
Wear Depth ◽  
Sliding Velocity ◽  
Friction Forces ◽  
The Impact

AbstractThe impact-sliding wear behavior of steam generator tubes in nuclear power plants is complex owing to the dynamic nature of the mechanical response and self-induced tribological changes. In this study, the effects of impact and sliding velocity on the impact-sliding wear behavior of a 2.25Cr1Mo steel tube are investigated experimentally and numerically. In the experimental study, a wear test rig that can measure changes in the impact and friction forces as well as the compressive displacement over different wear cycles, both in real time, is designed. A semi-analytical model based on the Archard wear law and Hertz contact theory is used to predict wear. The results indicate that the impact dynamic effect by the impact velocity is more significant than that of the sliding velocity, and that both velocities affect the friction force and wear degree. The experimental results for the wear depth evolution agree well with the corresponding simulation predictions.

scholarly journals Dry Sliding Wear Behavior of B4C and Graphite Particulates Reinforced A356 Alloy Composites

2018 ◽  
Vol 7 (2.23) ◽  
pp. 446
Author(s):  
Pankaj R Jadhav ◽  
B R Sridhar ◽  
Madeva Nagaral ◽  
Jayasheel I Harti ◽  
V Auradi
Keyword(s):  
Sliding Wear ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
A356 Alloy ◽  
Wear Test ◽  
The Other ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Mechanical Assembly ◽  
Wear Protection

The present works manages readiness of the composites by mix stirring method. A356 amalgam 4 wt. % of B4C and A356-4 wt. % of Graphite and A356-4% B4C-4% Graphite hybrid composites were readied. To enhance the wetting and uniform conveyance of the particles, fortifications were preheated to a temperature of 500 Degree Celsius. The arranged MMCs are subjected to examining SEM instrument which affirms the homogenous uniform appropriation of smaller scale B4C and Graphite particles in the lattice combination without agglomeration. The wear protection of arranged composites was examined by performing dry sliding wear test utilizing DUCOM made stick on plate mechanical assembly. The tests were directed at a consistent heap of 3kg and sliding separation of 4000m over a speed of 100, 200 and 300 rpm. So also the other arrangement of investigations were led at consistent sped of 300 rpm and sliding separation of 4000m and with changing heap of 1kg, 2kg, and 3kg. The outcomes demonstrated that the wear protections of the composites were improved than the lattice material.   

Studies on Erosive Wear Behavior of UHMWPE-Filled Aramid–Epoxy Hybrid Composites

2012 ◽  
Vol 27 (4) ◽  
pp. 430-435 ◽  
Author(s):  
N. Mohan ◽  
S. Natarajan ◽  
S. P. Kumaresh Babu ◽  
S. Siddaramaiah ◽  
Joong Hee Lee
Keyword(s):  
Hybrid Composites ◽  
Wear Behavior ◽  
Erosive Wear

Slurry Erosive Wear Behavior of Forged Al6061-CeO2-TiO2 Hybrid Composites

2013 ◽  
Author(s):  
Ramesh Chinnakurli Suryanarayana ◽  
Ummar Khan Attaullah ◽  
Kumar Saheb ◽  
Apoorva Kumar ◽  
Manoj Kumar Rajput
Keyword(s):  
Aluminium Alloy ◽  
Corrosion Protection ◽  
Aluminium Alloys ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Hot Forging ◽  
Erosive Wear ◽  
Hot Extrusion ◽  
Matrix Alloy ◽  
Slurry Erosion

Aluminium alloys are being widely used in naval applications owing to their excellent corrosion resistance and high formability characteristics. One of the most popular naval components is the tarpedo blade which makes use of forged aluminium alloy followed by anodizing surface treatment for corrosion protection. In recent years, there have been few attempts to replace the conventional aluminium alloys by their composites for the tarpedo blade applications. Literature review clearly says that CeO2 (Ceria) coating on aluminium and aluminium composites enhances their corrosion protection in aggressive marine environment. Further, there are reports suggesting that combination of CeO2 and TiO2 do yield better corrosion protection. However, there is no information on the work related to development of hybrid ceramic reinforced aluminium alloy matrices with CeO2 and TiO2 as particulate reinforcements for potential naval applications. In the light of above, the present work focuses on the development of novel Al6061-CeO2-TiO2 hybrid metal matrix composite by stir casting route followed by hot extrusion with an extrusion ratio of 8:1 at a temperature 550 °C and hot forging at 475 °C. The developed forged hybrid composites and the matrix alloy have been evaluated for microstructure, micro hardness and slurry erosion wear tests as per the ASTM Standards.

scholarly journals Experimental Evaluation of Erosion of Gunmetal under Asymmetrical Shaped Sand Particle

2015 ◽  
Vol 2015 ◽  
pp. 1-31 ◽  
Author(s):  
Mohammad Asaduzzaman Chowdhury ◽  
Uttam Kumar Debnath ◽  
Dewan Muhammad Nuruzzaman ◽  
Md. Monirul Islam
Keyword(s):  
Impact Velocity ◽  
Wear Behavior ◽  
Maximum Level ◽  
Impact Angle ◽  
Operating Conditions ◽  
Silica Sand ◽  
Sand Particle ◽  
Damage Propagation ◽  
Erosion Efficiency ◽  
The Impact

The erosion characteristics of gunmetal have been evaluated practically at different operating conditions. Asymmetrical silica sand (SiO2) is taken into account as erodent within range of 300–600 μm. The impact velocity within 30–50 m/sec, impact angle 15–900, and stand off distance 15–25 mm are inspected as other relevant operating test conditions. The maximum level of erosion is obtained at impact angle 15° which indicates the ductile manner of the tested gunmetal. The higher the impact velocity, the higher the erosion rate as almost linear fashion is observed. Mass loss of gunmetal reduces with the increase of stand-off distance. A dimensional analysis, erosion efficiency (η), and relationship between friction and erosion indicate the prominent correlation. The test results are designated using Taguchi’s and ANOVA concept.S/Nratio indicates that there are 1.72% deviations that are estimated between predicted and experimental results. To elaborately analyze the results, ANN and GMDH methods are mentioned. After erosion process of tested composite, the damage propagation on surfaces is examined using SEM for the confirmation of possible nature of wear behavior. The elemental composition of eroded test samples at varying percentage of gunmetal is analyzed by EDX analysis.

scholarly journals Modification of Surface Topography and Analysis of Its Impact on Friction and Wear Reduction of Sliding Contact

2019 ◽  
Vol 9 (1S3) ◽  
pp. 23-26
Keyword(s):  
Friction And Wear ◽  
Wear Behavior ◽  
Surface Texturing ◽  
Wear Test ◽  
Sliding Contact ◽  
Surface Textures ◽  
Sliding Direction ◽  
Pin On Disc ◽  
Interacting Surfaces ◽  
The Impact

Proper lubrication and surface modification are key factors to improve the tribological behavior of interacting sliding surfaces under lubricated conditions. Surface texturing of interacting surfaces has found to be an emerging technique that modifies the surfaces deterministically by producing surface features in the form of surface asperities or grooves with specific shape, size and distribution. The present paper address the impact of positive surface textures (protrusions) and number of positive textures in the sliding direction on friction and wear behavior of parallel sliding contacts. The square shaped positive surface textures are created on the specimen by ink-jet followed by chemical etching process. The sliding experiments are conducted on pin on disc friction and wear test rig by providing different sliding conditions such as plain dry, plain with lubricant and textures with lubricant between the interacting surfaces. The results indicated that the textures with lubricated condition exhibit lower friction and wear compared to other two conditions. Furthermore, it is reported that among the tested samples, the textured sample with number of textures three in sliding direction has shown a prominent effect in reducing friction and wear of parallel sliding contact.

scholarly journals Properties of coatings created by HVOF technology using micro-and nano-sized powder

2019 ◽  
Vol 63 (2) ◽  
pp. 86-93 ◽  
Author(s):  
A. Guzanová ◽  
J. Brezinová ◽  
D. Draganovská ◽  
P.O. Maruschak
Keyword(s):  
Corrosion Resistance ◽  
Cyclic Loading ◽  
Linear Polarization ◽  
Elevated Temperatures ◽  
Erosive Wear ◽  
Wear Test ◽  
Thermal Cycles ◽  
Properties Of Coatings ◽  
Grain Sizes ◽  
Sprayed Coatings

Abstract The paper focuses on assessment the resistance of hot-sprayed coatings applied by HVOF technology (WC–Co–Cr created using powder of two different grain sizes) against erosive wear by dry-pot wear test in a pin mill at two sample angles. As these coatings are designated for the environment with varying elevated temperatures and often are in contact with the abrasive, the coatings have been subjected to thermal cyclic loading and their erosive resistance has been determined in as-sprayed condition and after the 5th and 10th thermal cycles. The corrosion resistance of coatings was evaluated by linear polarization (Tafel analysis).

Friction and wear behavior of ultra-high molecular weight polyethylene/graphene nanoplatelets nanocomposite coatings at elevated temperatures

2021 ◽  
pp. 135065012110537
Author(s):  
Ismaila Kayode Aliyu ◽  
Mohammed Abdul Samad ◽  
Amro M Al-Qutub
Keyword(s):  
Molecular Weight ◽  
High Molecular Weight ◽  
Elevated Temperatures ◽  
Wear Behavior ◽  
Wear Test ◽  
Nanocomposite Coating ◽  
Graphene Nanoplatelets ◽  
Nanocomposite Coatings ◽  
Disc Configuration ◽  
Ultra High Molecular Weight

Ultra-high molecular weight polyethylene nanocomposite coatings reinforced with 1 wt.% graphene nanoplatelets were deposited on aluminum substrates. Sliding wear tests with a pin-on-disc configuration were conducted at different temperatures (25oC, 75oC, 90oC, 115oC, and 125oC) to evaluate the wear behavior of the coating at elevated temperatures. The ultra-high molecular weight polyethylene/1 wt.% graphene nanoplatelets nanocomposite coating showed an outstanding performance by passing the wear test without failing even until temperatures of 115oC as compared to the pure ultra-high molecular weight polyethylene coating which failed at a much lower temperature of 75oC, indicating an improvement in the operating temperature range of ultra-high molecular weight polyethylene by at least 44%.

Design and Performance of Slurry Erosion Tester

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
A. Abouel-Kasem ◽  
Y. M. Abd-elrhman ◽  
K. M. Emara ◽  
S. M. Ahmed
Keyword(s):  
Impact Velocity ◽  
Erosion Rate ◽  
Sample Surface ◽  
Erosion Process ◽  
Impingement Angle ◽  
Slurry Erosion ◽  
Erosion Test ◽  
And Performance ◽  
Paint Removal ◽  
The Impact

A slurry whirling arm erosion test ring was constructed and a series of erosion tests and post-erosion analysis were carried out using a paint erosion indication technique. The pattern of the paint removal presented a highly visual and accelerated map for the erosion process and its behavior. Also, the erosion rate of paint removal was investigated under a number of erosion variables. It was observed that the rebounding of the erodent particles from the sample surface play an important role in developing erosion for this tester. The erosion pattern showed that the effect of the rebound particles depends on the impact velocity and impingement angle. It was also observed that the erosion behavior of paint as a function of impingement angle, impact velocity, and erosion time was similar to that reported in literature for engineering materials. The slurry whirling arm erosion tester seems to be promising for simulating the slurry process in real cases.

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