Through these special array micro–nano composite multi-layer structures and chemical modification, the wear-resistant and superhydrophobic properties of aluminum alloy surfaces were realized. According to test results, the array micro–nano composite structures prepared by picosecond laser and chemical modification had a …
The results indicate that surface texture can improve the wear resistance of the substrate surface, which is due to the debris capturing and storage capacity of the micro-pits, which mitigates the secondary wear of debris in the contact area of the friction subsets. For the WOMS sample, the high wear resistance is attributed to the high ...
This paper presents the method of preparation and study results of the Stellite 6 laser surface alloyed (LSA) with rhenium using na LDF diode laser (4000 W). During this process, a rhenium powder was introduced onto the surface of the Co-based alloy. The possibility of improving wear and corrosion resistance properties is interesting and …
Purpose: Purpose of this study was to find influence of chemical composition, structure and hardness of modern metal cored wire deposits on their hardness and erosion and abrasion wear resistance of three different wires which gives the nanostructural deposits. Design/methodology/approach: Methodology surfaced deposits were investigated by …
Characterization of Wear and Corrosion Resistance of Stellite 6 Laser Surfaced Alloyed (LSA) with Rhenium Irina Smolina * and Karol Kobiela Citation: Smolina, I.; Kobiela, K. Characterization of ...
Flux-cored wire of Fe–C–Si–Mn–Cr–Ni–Mo composition (type A in the International Institute of Welding classification) is developed for the surfacing of abrasively worn parts. In the laboratory, multiple surface layers are applied to plate samples, with preliminary heating to 350°C and subsequent (after surfacing) slow cooling. An ASAW …
Microstructures, wear and corrosion resistance of laser composite surfaced austenitic stainless steel (AISI 304 SS) with tungsten carbide. Author links open overlay panel Amitesh Chakraborty a, ... Nevertheless, the low wear resistance of the SS limits the application of blades under more and more severe working conditions [4]. …
Request PDF | Wear resistance of surfaced modified CoCr alloy with stellite alloys and boron carbide coating via laser alloying | Resistance in joint prostheses remains widely studied in terms of ...
The effect of the initial structure of the alloy-fillers on the structure formation of the dissolution-diffusion type interfaces in macroheterogeneous composite materials with a metal binder has been investigated. It has been shown that by combining phases, which differ in resistance to molten binder in infiltration, in the filler structure, it is possible to …
Wear-resistant Materials. In general, wear is mechanically induced surface damage that results in the progressive removal of material due to relative motion between that surface and a contacting substance or …
In summary, we have demonstrated the use of ceramic materials TiN, AlN and TiAlN to achieve wear-resistant, ultrathin, viewing angle-independent surface colors. …
In this study, a superhydrophobic nickel surface that is highly robust against repetitive rubbing is presented. We implanted carbon nanotubes (CNTs) to protect the surfaces from contacts. We show that the CNTs implanted in nickel do not easily detach from the surface and maintain superhydrophobicity despite harsh rubbing (40 kPa, 600 …
Denser eutectic structures were observed in the case of PTA weld surfaced layers of Stellite 6 in comparison with the open arc weld surfacing process. The shapes of both carbides and borides in the 16C alloy (NiCrBSi type) coated by PTA processing were observed to have coarse morphology, while the spray and fuse layers showed needlelike ...
Botto et al. 22 studied the wear resistance of Co matrix coatings with Al 2 O 3 from RT to 1000 o C. Micro-Al 2 O 3 increased the modulus of elasticity that influenced the wear rates of coatings.
This chapter presents a comprehensive review of the recent developments in the production of wear-resistant metals and metal matrix composites, influence of …
Wear resistance is the ability of a material to resist the progressive loss of volume from its surface through mechanical actions such as repeated rubbing, sliding, or scraping. Wear …
Scratch, wear, impact, and heat resistance sets the standard for laminates. Enhanced wear- and chemical-resistant surfaces are available. Edge treatments are required to protect the surface integrity of HPL-surfaced panels. Panel faces are water and moisture resistant, unlike veneers. Special cores may be specified for moisture and fire resistance
Transparent, wear-resistant, superhydrophobic and superoleophobic surfaces were fabricated for PDMS. Superhydrophobicity was obtained either through micropatterning or a coating of hydrophobic SiO 2 nanoparticles and binder of methylphenyl silicone resin deposited using a spray technique. Superoleophobicity was achieved after …
Surface engineering including the design of coatings, surface texturing, surface hardening, and architecture effectively improves the wear resistance of surfaces …
Niobium ion implantation is found to significantly decrease the friction coefficient and improve wear resistance of NiTi shape memory alloy. Scanning electron microscope (SEM) observations indicate that surface grooves formed on NiTi during the mechanical polishing are removed after Nb ion implantation. Dry friction tests show that …
Experimental results showed that nano/micro-grooves on the tool surface, which were 100–150 nm deep and 700 nm apart, were not effective at improving the wear resistance, and micro-stripe grooves that were 5 μm deep, 20 μm wide, and 20 μm apart, and parallel to the main cutting edge and TiAlN coating significantly improved the wear ...
Surface wear resistance can be derived from wear volume, V, using Archards law: V = KlF/H, where K represents wear coefficient, l represents sliding …
Alloy powders including Ni60, WC, Cr3C2, and TiC with different mass ratios were deposited on medium carbon low alloy steel by plasma welding. Through the experiments, the optimal alloy powder reinforcing cutter tool surface properties were discovered. The wear resistance properties were investigated on the impact abrasive …
Results of low-stress abrasion wear resistance to metal-ceramic scratching by means dry quartz sand as the abrasion material of HARDOX 400 wear plate and GMA surfaced two layer deposits of ...
To determine quantitatively the wear resistance of GMA surfaced single and three layer stringer bead deposits of four metal cored wires EnDOTec DO*13, EnDOTec DO*16, EnDOTec DO*31 and EnDOTec DO*329 iron-based hard facing alloys and EnDOTec DO*60 and EnDOTec DO*70 cobalt based hard facing alloys, Table 1, in …
Washable and Wear-Resistant Superhydrophobic Surfaces with Self-Cleaning Property by Chemical Etching of Fibers and Hydrophobization. Chao-Hua Xue * † ‡, Ya-Ru Li †, Ping Zhang †, Jian-Zhong Ma † ‡, and ; Shun-Tian Jia †
In the wear resistance tests, 240# sandpaper and 20 g weight are used. The workpiece is dragged to move about 50 mm in one sliding wear experiment. In order to keep the tension and pressure of the workpiece unchanged, the rope without elastic is used to pull the workpiece and keep the workpiece moving at a certain speed. ...
This article is the last of a series of publications included in the MDPI special edition entitled "Innovative Technologies and Materials for the Production of Mechanical, Thermal and Corrosion Wear-Resistant Surface Layers and Coatings". Powder plasma-transferred arc welding (PPTAW) was used to surface metal matrix composite (MMC) …
The rapid wear damage on the blade causes the production cost to increase, both from the replacement cost and from the labor cost. Furthermore, the worn blade, while it is still operable, is reduced in dimension and altered in geometry, in particular the reduction in its length, see Fig. 1.The surface area of the leading edge or the cutting …
Improved wear resistance of laser composite surfaced samples were attributed to a lower co-efficient of friction and an improved hardness. Acknowledgements The financial support for the said work from Council of Scientific and Industrial Research (CSIR), New Delhi and Board of Research on Nuclear Science (BRNS), Bombay is gratefully acknowledged.
Tests of resistance of the surfaced wear-resistant layers to metal-mineral wear were carried out in accordance with ASTM G65 [10] for procedure A. For tests, 75x30 mm samples were cut from the ...
Surfacing technology is considered for wear-resistant metal layers on the inner surface of pipes and vessels for protecting equipment from abrasive wear, including high-temperature wear. Manufacturing technology and some properties of wear-resistant bimetal surfaced plates and pipes with internal surfacing are described. The potential …
The results of studies of the thermal resistance of rough-surfaced junctions are also significant for optimization of heat flux removal/input in modern mechanisms and instruments [2–4]. In this case, the rough-surfaced junctions are regarded as thermally stressed discrete contacts and their morphology can be modified using …
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To improve wear resistance, a TiAlN film with 2.4 μm thickness, which is commonly employed to cut tools that are used to cut steel, which has high hardness and heat resistance, was coated by physical vapor deposition after creating the grooves. The coating did not change the groove depth.
For wear resistance application though a higher depth of the composite coating is desired, however, too high an energy density causes evaporation of material from the surface and leading to the introduction of surface waviness and roughness. ... The coefficient of friction is marginally reduced (to a minimum of 0.4 for laser composite …