The sliding wear behavior of CrCuFeNi on alloying with cobalt with varying combination

2021 ◽  
Vol 23 (06) ◽  
pp. 729-741
Author(s):  
Kamalakannan R ◽  
◽  
Somasundram A ◽  
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Single Point ◽  
Testing Machine ◽  
Wear Test ◽  
Muffle Furnace ◽  
Universal Testing ◽  
Before And After ◽  
Pin On Disc

Chromium (Cr), Copper (Cu), Cobalt (Co), Ferrous (Fe) and Nickel (Ni), the HighEntropy Alloys were mixed to form analloy. A die was created using OHNS (OilHardenedNickelSteel).Thealloyed powderwasloadedintothedieandaloadof13KNwas applied. Universal Testing Machine (UTM) was used for the load application. Afterpressing, the specimen was kept inside the Muffle Furnace for heating at 600°C for sintering. After heating, the surface of the specimen was smoothened byroughing. The weight of the specimen was noted, before and after the wear test.The specimen was subjected to wear test in Pin on Disc Machine. Wear rate of thespecimen was calculated. This specimen was used to coat the Single Point Cuttingtool. This coating of tool was done to decrease the wear rate and increase the lifeofthe tool.

Comparative Study on the Wear Behavior of FPM and NBR in the Natural Crude Oil Medium

2013 ◽  
Vol 456 ◽  
pp. 349-353
Author(s):  
Zhe Wang ◽  
Shi Jie Wang
Keyword(s):  
Friction Coefficient ◽  
Crude Oil ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Test ◽  
Premature Failure ◽  
Oil Drilling ◽  
Rotating Speed ◽  
Before And After ◽  
Abrasion Testing

The wear behavior of stator rubber in the natural medium of crude oil in oil-drilling screw pumps directly matters to its service life and sealing property. The premature failure of stator rubber is the main cause for the shortening life of screw pumps. In order to study the wear mechanism of NBR and FPM, a friction wear test was conducted at room temperature by using a MPV-600 micro-computer-controlling grain-abrasion testing machine, in which NBR, FPM and 45# steal pair are the testing subjects. SEM was afterwards employed to observe the surface topography before and after the rubber wear. The test result shows that at the constant low load, the wear extent of FPM increases in a stable, linear way when the rotor rotating speed increases, and the wear extent of NBR increases with the increasing speed of the rotor rotating speed. However, when the rotating speed is over 400r/min, the wear extent of NBR decreases instead. This might be attributed to the improvement of the local lubrication state on the friction surface. Much consistence is indicated in the changing rule of the friction coefficient of the two types of rubber and the changing wear extent with the rotating speed. At the constant, low rotating speed, the wear extent of NBR and FPM basically increases linearly, while the friction coefficient of NBR, FPM and steel pair decreases with the increasing load.

Garnet and Al-flyash composite under dry sliding conditions

2017 ◽  
Vol 52 (17) ◽  
pp. 2281-2288 ◽  
Author(s):  
S Sivakumar ◽  
S Senthil Kumaran ◽  
M Uthayakumar ◽  
A Daniel Das
Keyword(s):  
Genetic Algorithm ◽  
Wear Rate ◽  
Process Parameters ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding

The dry sliding wear behaviour of LM 24 aluminum alloy composites reinforced with garnet particles was evaluated. Stir casting technique was used to fabricate the composites. A pin-on-disc wear-testing machine was used to evaluate the wear rate, in which an EN 24 steel disc was used as the counterface. Results indicated that the wear rates of the composites were lower than that of the matrix alloy and further decreased with the increase in garnet content. However, in both unreinforced and reinforced composites, the wear rate increased with the increase in load and the sliding speed. Increase in the applied load increased the wear severity by changing the wear mechanism from abrasion to particle cracking-induced delamination wear. It was found that with the increase in garnet content, the wear resistance increased monotonically. The observations have been explained using scanning electron microscopy analysis of the worn surfaces and the subsurface of the composites. In this work, the most influencing input and output parameters have been performed and the process parameters have been prioritized using genetic algorithm. Genetic algorithm is used to optimize the most influencing input as well as output process parameters. The practical significance of applying genetic algorithm to dry sliding wear behavior process has been validated by means of computing the deviation between predicted and experimentally obtained wear behavior of metal matrix composite.

scholarly journals “An Investigation of wear behavior of TiO2 nanoparticles mixed with Hybrid powder coating on MS material”

2021 ◽  
Vol 9 (12) ◽  
pp. 2350-2355
Author(s):  
Akshay Shinde
Keyword(s):  
Wear Resistance ◽  
Wear Rate ◽  
Tio2 Nanoparticles ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Powder Coating ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Maximum Contribution

Abstract: To improve the wear resistance of the hybrid powder coating, TiO2 nanoparticles was hot mixed to form a homogenous mixture with the powder in the range varying wt. dry sliding wear test conducted to determine the wear resistance. The experiments were design according to Taguchi L9 array to find the optimum nanoparticles content required to minimize the wear rate of the coating. ANOVA was used to determine the effect of the parameters on wear rate. It showed that reinforcement has the maximum contribution on the wear rate of the coating as compared to load and frequency. From the graph of means optimum parametric values was obtained at 2 % wt of reinforcement, 2 N load and 2 Hz frequency. The wear rate decrease with the increase in reinforcement. Keywords: Taguchi Method, Tribometer, Hybrid powder, TiO2, Wear Rate.

Role of Zirconia Filler on Mechanical Properties and Dry Sliding Wear Behavior of Glass/Basalt Hybrid Fabric Reinforced Epoxy Composites

2019 ◽  
Vol 895 ◽  
pp. 200-205
Author(s):  
B.S. Kanthraju ◽  
Bheemappa Suresha ◽  
H.M. Somashekar
Keyword(s):  
Mechanical Properties ◽  
Wear Rate ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Mechanical Test ◽  
Basalt Fiber ◽  
Wear Test ◽  
Specific Wear Rate ◽  
Dry Sliding Wear ◽  
Dry Sliding

This paper presents the effect of zirconia filler on mechanical properties and dry sliding wear of bidirectional hybrid (glass and basalt fiber) fabric reinforced epoxy (G-B/E) composites. Fabrication was done by hand layup method followed by compression molding. The effect of zirconia filler loading on mechanical characteristics like hardness, tensile and flexure of fabricated G-B/E composites were determined according to ASTM standards. Also, wear behavior under dry sliding condition was performed using pin-on-disc machine for different applied normal loads/sliding distance. Experimental results reveal that incorporation of zirconia filler improves the mechanical properties. Further, the wear test results indicated addition of zirconia into G-B/E hybrid fiber composites plays important role on specific wear rate under the tribo-conditions selected for the study. Further, inclusion of zirconia into G-B/E composites shows improved wear resistance and addition of 6 wt. % of zirconia exhibits least specific wear rate compared to other hybrid G-B/E composites. In addition, Scanning electron microscope images of selected mechanical test fractured coupons also have been discussed.

scholarly journals Effect of Hot Deformation on the Wear Behavior of Al2O3/ A356 Nano-Composites

2015 ◽  
Vol 9 (11) ◽  
pp. 153 ◽  
Author(s):  
Nawal Ezzat Abdul-latiff ◽  
Akeel Dhahir Subhi ◽  
Marwan Basil Hussein
Keyword(s):  
Wear Rate ◽  
Wear Mechanism ◽  
Hot Deformation ◽  
Wear Behavior ◽  
Wear Test ◽  
Nano Particles ◽  
Nano Composites ◽  
Nano Composite ◽  
Pin On Disc ◽  
20 Nm

<p>In the present work, Al<sub>2</sub>O<sub>3</sub>/A356<sub> </sub>nano composites with different Al<sub>2</sub>O<sub>3</sub> nano sizes (10 and 20 nm) and weight percentages (1 and 2 wt.%) have been prepared using rheocasting technique and followed by hot deformation at 250 °C with different ratios (30 and 40%). Pin on disc wear test was used to study wear behavior of prepared Al<sub>2</sub>O<sub>3</sub>/A356<sub> </sub>nano composites while scanning electron microscopy used to build up the wear mechanism. The results showed that the hot deformed nano Al<sub>2</sub>O<sub>3</sub> /A356 composites have lower wear rate compared with non deformed one. Furthermore, with increasing the particle size and percentage of Al<sub>2</sub>O<sub>3</sub> nano particles, wear rate decreased. The optimal result was achieved at the nano-composite containing 20 nm Al<sub>2</sub>O<sub>3</sub> particles after hot deformation with ratio of 40%. SEM studies of the worn surfaces of nano composites showed that the main wear mechanism was oxidative in conjunction with metallic one.</p>

Effect of Reinforcements on the Sliding Wear Behavior of Self-Lubricating AZ91D-SiC-Gr Hybrid Composites

2022 ◽  
Vol 10 (1) ◽  
pp. 1-19
Author(s):  
Sandeep Kumar Khatkar ◽  
Rajeev Verma ◽  
Suman Kant ◽  
Narendra Mohan Suri
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Signal To Noise Ratio ◽  
Normal Load ◽  
Critical Factor ◽  
Wear Properties ◽  
Pin On Disc ◽  
Sliding Distance

This article statistically investigates the effect of various parameters such as material factors: silicon carbide (SiC) reinforcement, graphite (Gr) reinforcement and mechanical factors: normal load, sliding distance and speed on the sliding wear rate of vacuum stir cast self-lubricating AZ91D-SiC-Gr hybrid magnesium composites. The sliding wear tests have been performed on pin-on-disc tribometer at 10-50N loads, 1-3m/s sliding speed and 1000-2000m sliding distance. It has been examined that hybrid composites yielded improved wear resistance with reinforcement of SiC and solid lubricant graphite. ANOVA and signal-to-noise ratio investigation indicated that applied load was the most critical factor influencing the wear rate, followed by sliding distance. Further, the AZ91D/5SiC/5Gr hybrid composite has exhibited the best wear properties. From the SEM and EDS analysis of worn surfaces, delamination was confirmed as the dominant wear mechanism for AZ91D-SiC-Gr hybrid composites.

Mathematical Model Development to Predict Wear Rate of Al6061/TiCp Composites under Lubricant

2015 ◽  
Vol 813-814 ◽  
pp. 74-78 ◽  
Author(s):  
K. Ragupathy ◽  
C. Velmurugan ◽  
S. Rajesh ◽  
D.S. Ebenezer Jacob Dhas
Keyword(s):  
Mathematical Model ◽  
Wear Rate ◽  
Wear Behavior ◽  
Design Method ◽  
Model Development ◽  
Wear Test ◽  
Stir Casting ◽  
Matrix Composites ◽  
Pin On Disc ◽  
Carbide Particles

Aluminium matrix composites are mostly used in aerospace and automobile industries due to their improved properties such as hardness, strength, wear resistance combined with considerable weight savings over unreinforced alloys. This paper reports the lubricated wear behavior of Al6061composites reinforced with titanium carbide particles fabricated by stir casting route. The experiments were conducted using central composite rotatable design method. The wear test was performed on the pin on disc machine where aluminium composite pins were rubbed against EN31 steel discs in the presence lubricant. A mathematical model has been developed by response surface methodology. The validity of the developed model was checked by Analysis of variance method. The experimental results revealed that the addition of lubricant at the contact surface reduced wear rate of the composite.

scholarly journals Effect of Nanosilica Filled Polyurethane Composite Coating on Polypropylene Substrate

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Yern Chee Ching ◽  
Nurehan Syamimie
Keyword(s):  
Wear Rate ◽  
Composite Coating ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Test ◽  
Optical Microscope ◽  
Wear Testing ◽  
Coating Film ◽  
Polyurethane Composite

Acrylic based polyurethane (PU) coatings with various amounts of nanosilica contents were prepared using solution casting method. The nanosilica (SiO2) particles used are around 16 nm in diameter. The friction and wear test was conducted using the reciprocating wear testing machine. The tests were performed at rotary speed of 100 rpm and 200 rpm with load of 0.1 kg to 0.4 kg under 1 N interval. The effect of the PU/nano-SiO2composite coating on friction and wear behavior of polypropylene substrate was investigated and compared. The worn surface of coating film layer after testing was investigated by using an optical microscope. The introduction of PU/nanosilica composite coating containing 3 wt% of nano-SiO2content gives the lowest friction coefficient and wear rate to PP substrate. Both the friction and wear rate of PP substrate coated with >3 wt% of nano-SiO2filled PU coating would increase with the increasing of applied load and sliding time.

Composite reinforcement by oxide TiO2

2013 ◽  
Vol 20 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Mehrdad Soltani ◽  
Seid Abbas Hoseininejad
Keyword(s):  
Wear Rate ◽  
Wear Debris ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Volume Loss ◽  
Transfer Layer ◽  
Pin On Disc ◽  
Sem Micrograph

AbstractThis composite has been developed by solidification processing by the addition of 0.5–3. 5 wt% powders of oxide TiO2 to molten Al-Cu alloy. The dry sliding wear behavior of pins of cast composite, fabricated by the solidification of the melt-particle slurry in mold, has been determined by pin-on-disc wear tests carried out conventionally and while removing wear debris by camel brush. The accumulated volume loss in composites increases linearly with increasing the sliding distance, and the wear rate increases more or less linearly with increasing load. The increasing particle content decreases the wear rate at a given load. The accumulated volume loss is considerably higher when the wear debris is removed by a camel brush during dry sliding wear. The relatively brighter compacted oxide transfer layer could be observed in the SEM micrograph of worn pin surfaces of the composites developed by the addition of TiO2. At higher loads, the oxide debris are expected to get better compacted to form the transfer layer, spread over a larger area of the sliding surface, and thus, their removal causes a larger wear compared to that without the removal of wear debris.

Empirical Modelling and Optimization of Sliding Wear Behaviour of Copper-Graphite Composites Using RSM

2014 ◽  
Vol 592-594 ◽  
pp. 260-268
Author(s):  
Amrishraj Doraisamy ◽  
Thiyagarajan Senthilvelan ◽  
S. Sampath Kumar
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Wear Test ◽  
Wear Behaviour ◽  
Empirical Modelling ◽  
The Matrix ◽  
Pin On Disc ◽  
Graphite Composites ◽  
Sliding Wear Behaviour ◽  
Modelling And Optimization

Copper-Graphite composites have been prepared through powder metallurgy (P/M) method. 0 3 and 6 wt % of graphite particles have been added as the reinforcement to the Copper powder which forms the matrix and composites have been prepared. Microstructure of the newly prepared composites was analyzed using Scanning Electron Microscopy (SEM). Wear test was done using Pin-on-disc tribometer according to G99 standards. A linear regression Mathematical model has been developed using RSM to predict the sliding wear behavior of the composites. Optimization has been done using RSM and also based on ANOVA to find the significant parameters affecting the sliding wear.

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