scholarly journals Comparison of the Tribological Properties of the Thermal Diffusion Zinc Coating to the Classic and Heat Treated Hot-Dip Zinc Coatings

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1655
Author(s):  
Dariusz Jędrzejczyk ◽  
Wojciech Skotnicki
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Thermal Diffusion ◽  
Zinc Coating ◽  
Surface Preparation ◽  
Coating Properties ◽  
Basis Metal ◽  
Heat Treated ◽  
Pin On Disc ◽  
Zinc Coatings

The presented studies are focused on the wear resistance and friction coefficient changes of the thermal diffusion (TD) zinc coating deposited on steel. The aim of research was to evaluate the variation in coating properties during dry friction as a result of the method of preparation of the basis metal. The measured properties were compared to those obtained after classic hot-dip (HD) zinc galvanizing—heat treated and untreated. Thermal diffusion zinc coatings were deposited in industrial conditions (according to EN ISO 17668:2016-04) on disc-shaped samples. The results obtained during the tribological tests (T11 pin-on-disc tester) were analysed on the basis of microscopic observations (with the use of optical and scanning microscopy), EDS (point and linear) analysis and microhardness measurements. The obtained results were similar to effects observed after heat treatment of HD zinc coating. The conducted analysis proved that the method of initial steel surface preparation results in changes in the coating’s hardness, friction coefficient and wear resistance.

scholarly journals The Impact of Heat Treatment on the Behavior of a Hot-Dip Zinc Coating Applied to Steel During Dry Friction

Materials ◽  
2021 ◽  
Vol 14 (3) ◽  
pp. 660
Author(s):  
Dariusz Jędrzejczyk ◽  
Elżbieta Szatkowska
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Friction Coefficient ◽  
Dry Friction ◽  
Zinc Coating ◽  
Pin On Disc ◽  
The One ◽  
The Impact ◽  
Coating Hardness ◽  
Anticorrosion Properties

The analyzed topic refers to the wear resistance and friction coefficient changes resulting from heat treatment (HT) of a hot-dip zinc coating deposited on steel. The aim of research was to evaluate the coating behavior during dry friction after HT as a result of microstructure changes and increase the coating hardness. The HT parameters should be determined by taking into consideration, on the one hand, coating wear resistance and, on the other hand, its anticorrosion properties. A hot-dip zinc coating was deposited in industrial conditions (according EN ISO 10684) on disc-shaped samples and the chosen bolts. The achieved results were assessed on the basis of tribological tests (T11 pin-on-disc tester, Schatz®Analyse device, Sindelfingen, Germany), microscopic observations (with the use of optical and scanning microscopy), EDS (point and linear) analysis, and microhardness measurements. It is proved that properly applied HT of a hot-dip zinc coating results in changes in the coating’s microstructure, hardness, friction coefficient, and wear resistance.

Heat Treated and As-Plated Electroless Duplex Ni-P/Ni-B Coatings: Evaluation of Hardness and Wear Resistance

2013 ◽  
Vol 853 ◽  
pp. 264-269 ◽  
Author(s):  
Gökce Dil ◽  
Ali Göksenli ◽  
Cagdas Calli ◽  
Faiz Muhaffel ◽  
Ali I. Aydeniz ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Friction Coefficient ◽  
Electroless Nickel ◽  
Xrd Analysis ◽  
Maximum Value ◽  
Heat Treated ◽  
Pin On Disc ◽  
Substrate Steel ◽  
Duplex Coatings

The present work deals with the formation of NiP/NiB duplex coatings by electroless plating and evaluation of their hardness and wear resistance. The duplex coatings were prepared with Ni-P as the inner layer. To analyze the structure of the coatings, XRD analysis was carried out. According to the results, NiP and NiB coatings are amorphous in their as-plated condition and after applying heat-treatment at 450 °C for 1 h, both NiP and NiB coatings crystallize and produce nickel, nickel phosphide and nickel borides in the coatings. To determine the surface morphology and cross-section characteristics of the coatings, SEM observations were carried out and concluded that duplex coatings are uniform and good coherent exists between the duplex layers and the coatings are also connected closely to the substrate. The hardness of electroless nickel duplex coatings increased with applying heat treatment and reached maximum value at coatings annealed at 400 °C. To analyze the tribological properties, pin-on-disc tests were carried out. The wear track patterns on the coatings and on Al2O3balls were then examined by optical microscopy and EDS. The friction coefficient and wear rate of the coatings were lower than the substrate steel. Friction coefficient decreased from 0.43 to 0.36 and wear resistance decreased from 11.3 to 6.4 by applying heat treatment at 450 °C for 1 h to duplex coatings.

Tribological properties of ultrahigh-molecular-weight polyethylene (UHMWPE) composites reinforced with different contents of glass and carbon fibers

2019 ◽  
Vol 71 (1) ◽  
pp. 22-30 ◽  
Author(s):  
Yanzhen Wang ◽  
Zhongwei Yin
Keyword(s):  
Molecular Weight ◽  
Wear Resistance ◽  
Friction Coefficient ◽  
High Performance ◽  
Ultrahigh Molecular Weight Polyethylene ◽  
Content Type ◽  
Ultrahigh Molecular Weight ◽  
Pin On Disc ◽  
Uhmwpe Composites ◽  
Uhmwpe Composite

PurposeThis purpose of this study was to investigate the effects of carbon fiber (CF) and/or glass fiber (GF) fillers on the tribological behaviors of ultrahigh-molecular-weight polyethylene (UHMWPE) composites to develop a high-performance water-lubricated journal bearing material.Design/methodology/approachTribological tests were conducted using a pin-on-disc tribometer using polished GCr15 steel pins against the UHMWPE composite discs under dry conditions with a contact pressure of 15 MPa and a sliding speed of 0.15 m/s. Scanning electron microscopy, laser 3D micro-imaging profile measurements and energy-dispersive X-ray spectrometry were used to analyze the morphologies and elemental distributions of the worn surfaces.FindingsThe results showed that hybrid CF and GF fillers effectively improved the wear resistance of the composites. The fiber fillers decreased the contact area, promoted transfer from the polymers and decreased the interlocking and plowing of material pairs, which contributed to the reduction of both the friction coefficient and the wear rate.Originality/valueThe UHMWPE composite containing 12.5 Wt.% CF and 12.5 Wt.% GF showed the best wear resistance of 2.61 × 10−5mm3/(N·m) and the lower friction coefficient of 0.12 under heavy loading. In addition, the fillers changed the worn surface morphology and the wear mechanism of the composites.

scholarly journals Corrosion resistance of thermal diffusion zinc coatings of “PNTZ” in oilfield environments

2019 ◽  
Vol 121 ◽  
pp. 02005
Author(s):  
Aleksandr Biryukov ◽  
Dmitry Zakharyevich ◽  
Rashit Galin ◽  
Natalya Devyaterikova ◽  
Igor Scherbakov
Keyword(s):  
Wear Resistance ◽  
Corrosion Resistance ◽  
Thermal Diffusion ◽  
Field Tests ◽  
Oil Industry ◽  
Zinc Powders ◽  
Zinc Coatings ◽  
Unique Composition ◽  
Production Composition

The production, composition, wear resistance and corrosion resistance of thermal diffusion zinc coatings produced at JSC PNTZ are considered. Specially treated zinc powders with nanocrystallized oxide on the surface of the particles are used in production. The process is capable to provide unique composition and microstructure of coatings. The results of laboratory and field tests show excellent characteristics of coatings in conditions typical for the oil industry.

Microstructures and Tribological Properties of Plasma Arc Sprayed Al-Fe-Cr-Ti Quasicrystalline Coatings

2007 ◽  
Vol 124-126 ◽  
pp. 1601-1604 ◽  
Author(s):  
Yeon Wook Kim ◽  
Hee Jung Kim ◽  
Hyun Myung Shin
Keyword(s):  
Wear Resistance ◽  
Friction Coefficient ◽  
Tribological Properties ◽  
Thermal Spray Coatings ◽  
Gas Atomization ◽  
Plasma Arc ◽  
Spray Coatings ◽  
Spray Process ◽  
Plasma Spray Process ◽  
Pin On Disc

One of the most important use of thermal spray coatings is for wear resistance. In this work, the tribological properties of plasma prayed Al83.7Fe7Cr6.3Ti3 quasicrystalline coatings have been studied. The quasicrystal powders of Al-base alloys were produced by gas atomization unit in vacuum. The plasma spray process was used to produce quasicrystalline coatings. Then, friction experiments were carried out on a pin-on-disc-type tribometer. The results indicated that the friction coefficient of Al83.7Fe7Cr6.3Ti3 quasicrystalline coating is about 50% lower than that of Al70Fe13Cu10Cr7 quasicrystalline coating.

Abrasive Wear on Heat-Treated Recycling Aluminium AA6061 of Various Reinforcement Materials through Powder Metallurgical Process

2017 ◽  
Vol 909 ◽  
pp. 15-20 ◽  
Author(s):  
Ahmed Sahib Mahdi ◽  
Mohammad Sukri Mustapa ◽  
Mohd Radzi Mohamed Yunus ◽  
Mohd Rasidi Ibrahim ◽  
Muhammad Irfan Ab Kadir ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Weight Loss ◽  
Wear Resistance ◽  
Wear Test ◽  
Metallurgical Process ◽  
Micro Hardness ◽  
Powder Metallurgical Process ◽  
Heat Treated ◽  
Pin On Disc ◽  
Is Value

The present study is aimed at investigating wear resistance of the heat treated of recycled aluminium type AA6061 for various reinforced methods (heat treatment reinforced by graphite and silica) using pin on disc method. In the study, weight loss value of the recycled chip of AA6061 was observed. Eight specimens were taken for the wear test. The results showed that the wear resistance increased for specimens treated by heat treatment. This increase in wear resistance is value of micro hardness which increased with the increase of the percentage of silica reinforcement. Thus, the weight loss decreased and the volume loss also decreased.

The Influence of Hydrostatic Extrusion on the Properties of an Austenitic Stainless Steel

2006 ◽  
Vol 114 ◽  
pp. 57-62 ◽  
Author(s):  
Julia Budniak ◽  
Małgorzata Lewandowska ◽  
Wacław Pachla ◽  
Mariusz Kulczyk ◽  
Krzysztof Jan Kurzydlowski
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Wear Resistance ◽  
Friction Coefficient ◽  
Wear Test ◽  
Extrusion Process ◽  
Hydrostatic Extrusion ◽  
Compression Tests ◽  
Wear Properties ◽  
Pin On Disc

The paper presents the results of investigations into the mechanical properties and tribological characteristics of 316 LVM processed by hydrostatic extrusion (HE). The mechanical properties were characterized by microhardness measurements and compression tests. The wear properties were investigated using a pin-on-disc tribometer under dry and lubricated conditions. The friction coefficient was measured as a function of the time of the wear test. The results indicate that the hydrostatic extrusion process significantly improves the mechanical properties and the wear resistance of 316 LVM stainless steel. The results are discussed in terms of the microstructural changes induced during processing by hydrostatic extrusion.

scholarly journals DEVICE FOR CONTROL AND MAINTENANCE OF OPERATING PRESSURE IN THE RETORT DURING THERMODIFUSION ZINC COATING OF PRODUCTS FROM NON FERROUS ALLOYS

2020 ◽  
pp. 91-94
Author(s):  
N. A. Kidalov ◽  
E. V. Fomina ◽  
Yu. V. Grebnev ◽  
V. A. Guriev
Keyword(s):  
Thermal Diffusion ◽  
Zinc Coating ◽  
Operating Pressure ◽  
Ferrous Alloys ◽  
High Quality ◽  
Working Pressure ◽  
Zinc Coatings

A device for control and maintenance of the working pressure in the retort has been developed, which makes it possible to obtain high quality zinc coatings of the required thickness on products from non-ferrous alloys during thermal diffusion zinc coating.

The Effects of T5 and T6 Heat Treatments on Wear Behaviour of AA6063 Alloy

2014 ◽  
Vol 33 (3) ◽  
pp. 231-237 ◽  
Author(s):  
Dursun Özyürek ◽  
Tansel Tunçay ◽  
Hasan Kaya
Keyword(s):  
Heat Treatment ◽  
Wear Resistance ◽  
Wear Test ◽  
Wear Behaviour ◽  
Precipitate Size ◽  
T6 Heat Treatment ◽  
Heat Treated ◽  
Pin On Disc ◽  
Aa6063 Alloy ◽  
Equipment Wear

AbstractIn this study, T5 heat treatment was applied to AA6063 alloy aged at 455 K for 2 hours after extrusion at 686 K. T6 heat treatment was also carried out by ageing at 455 K for 2 hours after solution heat treatment at 794 K for 1 hour. Heat treated T5 and T6 specimens were tested by pin-on-disc type wear equipment. Wear test was carried out by using 10, 20, 30 N loads and 400, 800, 1200 and 1600 m wear distance. T5 and T6 heat treated specimens were characterized with scanning electron microscope, X-ray diffraction (XRD), energy dispersive spectroscopy (EDS) and hardness measurements. Worn surfaces of the specimens was also characterised with SEM. The results indicated that small and homogenously dispersed Mg2Si precipitates formed in AA6063 aluminium alloy with T6 heat treatment were compared to the T5 heat treatment. As a result of increment precipitate size, wear resistance decreased. T6 heat treated specimens showed higher hardness compared to the T5 heat treated specimens. In addition wear resistance and friction coefficient of both T5 and T6 heat treated specimens decreased with increasing applied load.

Interface Property and Two-Body Wear Behavior of High-Cr WCI Matrix Composite Reinforced with CC Particles

2010 ◽  
Vol 457 ◽  
pp. 273-278 ◽  
Author(s):  
Ye Fei Li ◽  
Yi Min Gao ◽  
Jian Jun Zhang ◽  
Jing Bo Yan
Keyword(s):  
Wear Resistance ◽  
Wear Behavior ◽  
Casting Process ◽  
Optical Microscope ◽  
Wear Loss ◽  
Metallurgical Bonding ◽  
Heat Treated ◽  
Interfacial Structures ◽  
Significant Difference ◽  
Pin On Disc

The vacuum infiltration casting process was adopted to prepare cemented carbide (CC) particles reinforced high-Cr white cast iron (WCI) composite by using failed CC parts as reinforcement. The interfacial structures between the CC particle and iron matrix were analysed by optical microscope (OM) and X-ray diffraction (XRD); the wear behavior of the composite was studied by pin-on-disc wear tester. The results showed that: owing to partial dissolution of the CC particles and diffusion of elements such as W, C, Cr and Fe, compounds such as Fe3W3C and Co3W3C were formed, which ensured metallurgical bonding at the interface; the wear resistance property of the composite was much higher than that of the heat treated WCI, moreover, when the applied load increased from 0.4Kg to 2Kg, the wear resistance value of the composite was more than 3.5 times than that of the heat treated WCI. However, there was no significant difference in the wear loss between CC/WCI composite and WC/WCI composite.

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