Influence of temperature, impact angle and h-BN content on the erosive wear behavior of hot-pressed SiC-BN composites

Wear ◽  
2020 ◽  
Vol 458-459 ◽  
pp. 203447
Author(s):  
Nilesh V. Dorkar ◽  
Young-Wook Kim ◽  
B. Venkata Manoj Kumar
2020 ◽  
pp. 2050051
Author(s):  
DIPAK KUMAR ◽  
K. N. PANDEY

Solid particle erosion behavior of non-conventional thermal barrier coatings prepared by dip coating of sol–gel 7[Formula: see text]wt.% yttria-stabilized zirconia (7YSZ) has been studied in the present paper. The purpose was to show its applicability to protect aeronautic bodies vulnerable under solid particle impact, e.g. the leading edges of the wings, the radome or the leading edges of rotor blades. The effect of operational variables on erosion rate is studied both for uncoated AA2024-T351 substrate and sol–gel-derived 7YSZ top-coat on AA2024-T351 substrate. The interactive influence of variables on erosive wear behavior is also systematically studied using an air-jet erosion tester under four different parameters such as temperature (25, 150, 275 and [Formula: see text]C), impact angle ([Formula: see text], [Formula: see text], [Formula: see text] and [Formula: see text]), impact particle velocity (40, 60, 80 and 100[Formula: see text]m/s) and erodent flow rate (2, 3, 4 and 5[Formula: see text]g/min) using L[Formula: see text] Taguchi design of experiments. The optimal experimental parameters were obtained by orthogonal arrays, signal-to-noise ratio (SNR) and analysis of variance (ANOVA) for uncoated and coated aluminum alloys AA2024-T351. The temperature was found to be the most influencing parameter followed by impact angle, impact velocity and erodent flow rate for uncoated samples. For 7YSZ sol–gel coated samples, temperature was the most influencing parameter followed by impact angle, erodent flow rate and impact velocity.


Author(s):  
Nafiseh Banazadeh-Neishabouri ◽  
Siamack A. Shirazi

Abstract Effects of particle velocity, impact angle and particle size and shape on erosive behavior of Fiberglass Reinforced Plastic (FRP) and Polyethylene were investigated. Experiments were carried out with two particle velocities (18 and 32 m/s) and different impact angles ranging from 15 to 90 degrees. Silica sands with sizes of 75, 150 and 300 μm was utilized as erodent to study effects of sand shape and size. Results revealed erosion data of FRP and Polyethylene are similar to ductile materials as they display maximum erosion ratio at 30 degrees impact angle. However, Polyethylene showed an interesting behavior at 75 and 90 degrees; sand particles were embedded into the specimen and mass gain of specimen has been observed. 3D scan of wear patterns of specimens was obtained by 3D profilometer in order to evaluate the erosion depth and wear pattern of the surface.


2012 ◽  
Vol 573-574 ◽  
pp. 1193-1197
Author(s):  
Li Ge Wang ◽  
Xiao Bing Gu ◽  
Yang Zhang ◽  
En Ze Wang

Al2O3-glaze composite ceramic coating was prepared with enamel coating as transition layer and Al2O3 as hard antiwear facies on Q235A steel surface in this paper, and the effects of the particle size and volume fraction of ceramic coating on erosive wear behavior of composite coating were investigated. The results show that enamel performance of ceramic coating is better when the particle size of glaze is 16µm; the anti-wear property of composite ceramic coating is improved by adding Al2O3 particle, and the coating with 50μm particle size and 40% volume fraction particles, eroded at 45° impact angle at 15MPa pressure, is the best, which is 4.2 times than that of the enamel coating without Al2O3.


Wear ◽  
2019 ◽  
Vol 418-419 ◽  
pp. 160-166 ◽  
Author(s):  
Konstantin S. Selivanov ◽  
Anatoly M. Smyslov ◽  
Yuri M. Dyblenko ◽  
Irina P. Semenova

Author(s):  
M. Kameswara Reddy ◽  
V. Suresh Babu ◽  
K. V. Sai Srinadh

The present work studies the tribological performance of Tungsten Carbide (WC) nanoparticles reinforced epoxy polymer nanocomposites. Polymer nanocomposites are prepared by hand lay-up method. Erosive wear and hardness tests were conducted to examine the physical and wear properties of epoxy/WC nanocomposites. Addition of WC nanoparticles led to significant reduction in erosion rate. In addition to that, incorporation of WC nanoparticles enhanced the hardness of epoxy nano composites. At 2% weight of WC nano filler, nanocomposites showed better performance in erosion wear properties and also in hardness. While at 3wt% of WC filler, least performance in hardness was caused by the weak adhesive bonding between the matrix and filler. The nature of erosion wear behavior was observed. Finally worn surfaces of nanocomposites were inspected using a “scanning electron microscope (SEM)”.


Wear ◽  
2001 ◽  
Vol 249 (8) ◽  
pp. 702-714 ◽  
Author(s):  
J.John Rajesh ◽  
Jayashree Bijwe ◽  
U.S. Tewari ◽  
B. Venkataraman
Keyword(s):  

2012 ◽  
Vol 482-484 ◽  
pp. 1592-1595 ◽  
Author(s):  
Ji Xin Zhang ◽  
Jian Chun Fan ◽  
Yong Jin Xie ◽  
Han Chuan Wu

Erosion phenomenon is quite common in petroleum industry, as one of the main mechanisms of material degradation, occurs frequently on high-pressure pipelines in hydraulic fracturing operation. With the increasing of operation times, the erosion and corrosion defects on the inner surface of the pipeline, would lead to serious material loss and equipment failure. In this paper a new type of test machine was developed to simulate the erosive wear behavior of metal materials caused by the multiphase fluid such as fracturing fluid, and study the erosion failure mechanism by various metal erosion influencing factors including the velocity of multiphase flow, solid particles of fracturing proppant and impact angles, etc. The erosion-wear experiments on 20CrNiMo steels used in high-pressure pipelines is described in detail. Finally, the microcosmic surface testing was also used to analyze the erosion failure mechanism of metal materials for high pressure pipelines.


2013 ◽  
Vol 44 (1) ◽  
pp. 385-393 ◽  
Author(s):  
N. Gamze Karsli ◽  
Taner Yilmaz ◽  
Ayse Aytac ◽  
Guralp Ozkoc

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