Effect of Ceramic Particle Reinforcement on the Erosion Resistance of Thermally Sprayed De-Icing Systems

2021 ◽  
Author(s):  
Shahed Taghian Dehaghani ◽  
André McDonald ◽  
Ali Dolatabadi
Keyword(s):  
Metal Matrix ◽  
Turbine Blades ◽  
Matrix Material ◽  
Low Carbon Steel ◽  
Erosive Wear ◽  
Cold Spraying ◽  
Solid Particles ◽  
Flame Spraying ◽  
Low Carbon ◽  
Wear Rates

Abstract Developing effective heating systems to prevent ice accretion on the surface of wind turbine blades and aircraft wings is of great significance for extreme cold environments. However, due to high velocity impingement of water droplets and solid particles on the surface of these components, an appreciable degree of surface material degradation may occur. In this study, nickel-chromium-aluminum-yttrium (NiCrAlY) was chosen as a metal matrix material for a coating-based heating system. Pure ceramic powders, namely, alumina and titania, and a cermet powder, tungsten carbide-cobalt (WC-12Co), were mechanically admixed with NiCrAlY powder and deposited to fabricate reinforced metal matrix composite (MMC) coatings. The powders were deposited on cylindrical low carbon steel bars by using flame spraying. The specimens were placed in a wind tunnel to conduct a comparative investigation of their erosive wear resistance under water droplet impact. A cold spraying unit was used for solid particle impact erosion tests. The erosive wear rates were quantified by measuring mass loss. The experimentally obtained results showed noticeably lower wear rate in NiCrAlY-WC-12Co and NiCrAlY-titania coatings compared to the other coatings. The results suggest that certain MMC coatings could be effectively employed to decrease the erosion rate of coating-based heating elements.

Metal-matrix composite fabricated with gas tungsten arc melt injection and precoated with NiCrBSi alloy to increase the volume fraction of WC particles

2017 ◽  
Vol 24 (2) ◽  
pp. 195-202 ◽  
Author(s):  
Aiguo Liu ◽  
Da Li ◽  
Fanling Meng ◽  
Huanhuan Sun
Keyword(s):  
Wear Resistance ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Low Carbon Steel ◽  
High Volume ◽  
Wear Loss ◽  
Low Carbon ◽  
Gas Tungsten Arc ◽  
The Matrix ◽  
Gas Tungsten

AbstractThe volume fraction, dissolution, and segregation of WC particles in metal-matrix composites (MMCs) are critical to their wear resistance. Low carbon steel substrates were precoated with NiCrBSi coatings and processed with gas tungsten arc melt injection method to fabricate MMCs with high volume fraction of WC particles. The microstructures and wear resistance of the composites were investigated. The results showed that the volume fraction of WC particles increased with decreasing hopper height and was as high as 44% when hopper height was 100 mm. The dissolution of WC particles was minimal. The content of the alloying elements decreased from the top to the bottom of the matrix. More WC particles dissolved in the overlapping area, where Fe3W3C carbide blocks could be found. The wear loss of the MMCs after 40 min was 6.9 mg, which is 76 times less than that of the substrate after the 4 min test.

scholarly journals Reducing the mechanical wear of elbows and pipes due to solid particles flow by using nano coating technique

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ali Sadiq Al-Ithari ◽  
Nabeel Al-Zurfi ◽  
Laith Zbbal Abd U. L. Kareem
Keyword(s):  
Erosion Rate ◽  
Low Carbon Steel ◽  
Operating Conditions ◽  
Solid Particles ◽  
Low Carbon ◽  
Tungsten Carbides ◽  
Operation Condition ◽  
Mechanical Wear ◽  
Nano Coating ◽  
Pin On Disc

AbstractThis work investigated reasons and factors that cause the failure due to mechanical wear (Erosion) for the inside surface of elbows and pipes used in cement transportation which manufactures from low carbon steel and finds out a method for reducing this failure. The technique of Nano-coating layers is used to coat the surface of samples with layers of nanoparticles of tungsten carbides of different thicknesses of (30, 40, and 50 μm). The test was done for these samples by placing them inside the elbow under the same operating conditions, pin on disc test. The results of the test under the same operation condition showed a decrease in erosion rate by 71% for the sample coated with 50 μm of layer, while the results of the pin on disc test showed a decrease in erosion rate by 97% for the thickness of 50 μm as this test is done under ideal testing conditions. The decrease in wear rate for elbow and pipes will increase their life work two times at least and that reduces the cost of maintenance by about 75%. The numerical simulation was also implemented to simulate the erosion profile inside the elbow, and the agreement with experimental results was 90%.

scholarly journals EFFECT OF TURNING PARAMETERS ON METAL REMOVAL AND TOOL WEAR RATES OF AISI 1018 LOW CARBON STEEL

2016 ◽  
Vol 35 (4) ◽  
pp. 847 ◽  
Author(s):  
C Mgbemena ◽  
C Mgbemena ◽  
G Etebenumeh ◽  
F Ashiedu
Keyword(s):  
Carbon Steel ◽  
Tool Wear ◽  
Metal Removal ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Wear Rates

scholarly journals The Mechanism of Corrosion–Erosion in Steam Extraction Lines of Power Stations

1988 ◽  
Vol 110 (2) ◽  
pp. 180-184 ◽  
Author(s):  
L. E. Sanchez-Caldera ◽  
P. Griffith ◽  
E. Rabinowicz
Keyword(s):  
Material Removal ◽  
Metal Removal ◽  
Removal Rate ◽  
Low Carbon Steel ◽  
Mass Transfer Process ◽  
Diffusion Resistance ◽  
Low Carbon ◽  
Wear Rates ◽  
Power Stations ◽  
Steam Extraction

Corrosion-erosion occurs in steam extraction piping made of low carbon steel that conveys wet steam. The rate of metal removal peaks at 150°C and is most severe on the inside and outside of bends and in the vicinity of fittings. A theory is presented by which three processes are shown to give rise to the observed peak in the metal removal rate: (1) the oxidation reaction, (2) the mass transfer process, which governs at 150°C, and (3) the diffusion resistance of the oxide layer, which governs at higher temperatures. The results of the derived model agree well with the available experimental data in predicting wear rates and in establishing the temperature and the location of maximum material removal.

Effect of WC Grain Size and Content on Erosive Wear of Manual Arc Welded Hardfacings with Low-Carbon Ferritic-Pearlitic Steel or Stainless Steel Matrix

2016 ◽  
Vol 674 ◽  
pp. 213-218 ◽  
Author(s):  
Egidijus Katinas ◽  
Maksim Antonov ◽  
Vytenis Jankauskas ◽  
Remigijus Skirkus
Keyword(s):  
Grain Size ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Kinetic Energy ◽  
Wear Rate ◽  
Erosive Wear ◽  
Impact Angle ◽  
Steel Matrix ◽  
Low Carbon ◽  
Wear Rates

The erosive wear resistance of manual arc welded hardfacings with low-carbon or stainless steel matrix, varied WC grain size (0.23-0.61 mm) and varied WC content (max. 40 wt. %) was studied. Electrodes were produced by JSC “Anykščių varis“ company (Lithuania). Testing was performed according to GOST 23.201-78 standard using the Centrifugal Accelerator of Kleis (CAK). Test parameters were as following: room temperature; silica sand with particles size 0-0.6 mm; particle impact velocity – 10, 30, 50 and 80 ms-1; impact angles – 30° and 90°.It was found that there is only minor (usually not more than 2 times) effect of WC grain size and content on erosive wear of studied hardfacings. There is strong effect of velocity on wear rate. The graph showing the effect of abrasive particle‘s kinetic energy on wear rate is provided. It was found that the wear rate increases 2.8 times faster than kinetic energy of abrasive particles. The wear resistance of coatings could be improved by addition of WC when hardfacing is tested with impact angle of 30°. However, for impact angle of 90° the addition of WC into hardfacing has no effect or is even detrimental (leading to the increase in wear rate). The hardfacings with WC grain size in the range from 0.14 to 0.27 mm have the lowest wear rates during testing with impact angle of 30°. A discussion of the wear mechanisms for the hardfacings is provided, based on data and observations obtained by using scanning electron microscopy.

scholarly journals Boride-Carbon Hybrid Technology for Ultra-Wear and Corrosive Conditions

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 475
Author(s):  
Nina Baule ◽  
Young S. Kim ◽  
André T. Zeuner ◽  
Lars Haubold ◽  
Robert Kühne ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Contact Fatigue ◽  
Low Carbon Steel ◽  
Single Layer ◽  
High Hardness ◽  
Low Carbon ◽  
Wear Properties ◽  
Wear Rates ◽  
Duplex Treatment ◽  
1045 Steel

This work discusses a study on a surface treatment for creating extremely durable low-friction, wear and corrosion-resistant surfaces for tribological components in harsh conditions. A duplex surface treatment was developed that combines the advantages of ultra-fast electrochemical boriding with those of hard tetrahedral amorphous carbon coatings. The friction and wear properties of the duplex treatment are compared to the boride-only treatment of AISI 1045 steel, while corrosion and contact fatigue behaviors of the duplex layer are compared to that of the single-layer carbon coating on low carbon steel. The duplex treatment yields wear rates as low as 6 × 10−8 mm3·N−1·m−1 and a coefficient of friction of 0.14 when tested against a steel counter face. The contact fatigue impact tests reveal that the high hardness of 1200 HV0.05 of the borided layer in the duplex treatment leads to higher resistance against indentation but is accompanied by a higher incidence of crack initiation, being in good agreement with the finite-element modeling of nanoindentation results. The duplex coatings exhibit resistance to pinhole corrosion as evidenced by a 3 h exposure to 15% HCl at room temperature.

scholarly journals Reducing Mechanical Wear of Elbows and Pipes Due to Solid Particles Flow by Using Nano Coating Technique

2020 ◽  
Author(s):  
Laith Abd UL Kareem ◽  
Ali Sadiq AlIthari ◽  
Nabeel AlZurfi
Keyword(s):  
High Velocity ◽  
Low Carbon Steel ◽  
Solid Particles ◽  
Pipe Material ◽  
Low Carbon ◽  
Tungsten Carbides ◽  
Mechanical Wear ◽  
Spray Process ◽  
Nano Coating ◽  
Pin On Disc

Abstract The problem of failure for elbows and pipes due to the effects of solid particles flow with a high velocity, facing a lot of industrial foundations now days. This work investigated factors that cause failure by mechanical wear inside elbows and pipes of cement transportation which manufacturing from low carbon steel (St-52-3) and find out a method for reducing this mechanical wear. Coating with layers of nanoparticles of tungsten carbides (WC) using a thermal spray process with a high-velocity oxy-fuel technique (HVOF) is one of those methods. The coating process was done for samples from the same material of elbow and pipe material. Some tests were done for these samples with different coating thicknesses (30, 40, and 50 µm) by placing them inside the elbow as well as standard wear tests (pin on disc). The results showed a decrease in the mechanical wear for the sample coated with 50 µm of WC layer by 71% compared with that without coating, while the results of the pin on disc test showed a decrease in wear about 97% for the sample coated with 50 µm. The photographs of the scanning electron microscope (SEM) were used to determine the thickness of the coating layer on samples. The numerical simulation was also implemented to simulate the erosion profile inside the elbow by using the commercial code STAR CCM + based on the CFD technique; the predicted results showed a good agreement with the experimental data with accuracy reaches 94%.

Sign in / Sign up

Export Citation Format

Share Document