Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel
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University of Akron / OhioLINK
2021
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ndltd-OhioLink-oai-etd.ohiolink.edu-akron16188538550834682021-08-03T07:17:09Z Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel Paul, Arindam Materials Science Mechanical Engineering Chemistry Nickel-Tungsten Metallic coating pulsed reverse current electrodeposition surface characterization SEM EDS XRD interferometry wear properties sliding condition mixed mode condition corrosion resistance polarization plots impedance plots In 2016 it was estimated that corrosion related costs were 3.4% of global GDP. Coatings are widely used for preventing or controlling corrosion. However, none of the currently used corrosion resistant coatings provides enough wear resistance for gears and bearing applications. Poor surface morphology of the corrosion resistant coatings cause increased wear and friction, resulting in early failure of the rolling element. Developing electrodeposited alloy coatings that promote synergy with additives used in gear and engine oils, while providing corrosion resistance can be a viable solution. Alloyed metals provides superior properties (like hardness, physical, chemical, magnetic) compared to pure metals, even at a nanoscale. Ni-W alloy was recently been reported to have unique contribution to mechanical, tribological and corrosion resistant performance. In addition, Ni was found to promote the formation of a thicker and durable lubricating layer. However, careful evaluation of in-service life of these alloy coatings are needed. Composite nanoparticles in many cases can also improve tribological performance of the component. Researchers have studied the effect of such nanoparticles on the tribological performance of oils. Both beneficial and detrimental effect of such nanoparticles has been reported. In this study NiW alloy and NiW-TiO2 composite coatings were electrodeposited on SAE 52100 steel coupons. Pulsed reversed current (PRC) electrodeposition technique is used due to its capability of producing more dense and uniform coating. Also, incorporating TiO2 nanoparticles on the NiW matrix is hypothesized to enhance the hardness and corrosion resistance. Both NiW alloy and NiW-TiO2 coated disks were tested in fully formulated oil and mineral oil provided by John Deere. Tribological performance was evaluated in both sliding and rolling condition. Corrosion resistance property were measured in 3.5% NaCl. Sliding performance were tested using High Frequency Reciprocating Rig (HFRR), rolling performance were tested using 3 ball-on-rod rolling contact fatigue tribometer (RCF) and micro pitting rig (MPR) under boundary lubricated condition. Compositional, elemental and wear tracks analysis were done using 3D interferometer, X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), X-ray fluorescence (XRF), Raman spectroscopy and optical microscopy. Hardness measurement were done using a Nanoindentor. 2021-04-27 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1618853855083468 http://rave.ohiolink.edu/etdc/view?acc_num=akron1618853855083468 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws. |
| collection |
NDLTD |
| language |
English |
| sources |
NDLTD |
| topic |
Materials Science Mechanical Engineering Chemistry Nickel-Tungsten Metallic coating pulsed reverse current electrodeposition surface characterization SEM EDS XRD interferometry wear properties sliding condition mixed mode condition corrosion resistance polarization plots impedance plots |
| spellingShingle |
Materials Science Mechanical Engineering Chemistry Nickel-Tungsten Metallic coating pulsed reverse current electrodeposition surface characterization SEM EDS XRD interferometry wear properties sliding condition mixed mode condition corrosion resistance polarization plots impedance plots Paul, Arindam Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| author |
Paul, Arindam |
| author_facet |
Paul, Arindam |
| author_sort |
Paul, Arindam |
| title |
Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| title_short |
Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| title_full |
Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| title_fullStr |
Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| title_full_unstemmed |
Development and evaluation of NiW alloy and NiW-TiO2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| title_sort |
development and evaluation of niw alloy and niw-tio2 composite coatings on the mechanical properties, tribological performance and the corrosion resistance of bearing steel |
| publisher |
University of Akron / OhioLINK |
| publishDate |
2021 |
| url |
http://rave.ohiolink.edu/etdc/view?acc_num=akron1618853855083468 |
| work_keys_str_mv |
AT paularindam developmentandevaluationofniwalloyandniwtio2compositecoatingsonthemechanicalpropertiestribologicalperformanceandthecorrosionresistanceofbearingsteel |
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1719458240402554880 |