scholarly journals Study of Particle Incorporation and Performance Characteristic of Aluminium Silicate-Zirconia Embedded on Zinc Rich Coatings for Corrosion and Wear Performance

2017 ◽  
Vol 29 (12) ◽  
pp. 2575-2581 ◽  
Author(s):  
O.S.I. Fayomi ◽  
A.P.I. Popoola ◽  
O.O. Ige ◽  
A.A. Ayoola
Keyword(s):  
Performance Characteristic ◽  
Corrosion And Wear ◽  
Wear Performance ◽  
Particle Incorporation ◽  
And Performance ◽  
Aluminium Silicate

scholarly journals Wear Performance Analysis of Ni–Al2O3 Nanocomposite Coatings under Nonconventional Lubrication

Materials ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 36 ◽  
Author(s):  
Muhammad Bhutta ◽  
Zulfiqar Khan ◽  
Nigel Garland
Keyword(s):  
Abrasive Wear ◽  
Steel Sample ◽  
Nanocomposite Coatings ◽  
Wear Volume ◽  
Surface Films ◽  
Wear Performance ◽  
Uncoated Steel ◽  
Type Contact ◽  
Flat Steel ◽  
And Performance

This article presents a wear study of Ni–Al2O3 nanocomposite coatings in comparison to uncoated steel contacts under reciprocating motion. A ball-on-flat type contact configuration has been used in this study in which a reciprocating flat steel sample has been used in a coated and uncoated state against a stationary steel ball under refrigerant lubrication. The next generation of environmentally friendly refrigerant HFE-7000 has been used itself as lubricant in this study without the influence of any external lubricant. The thermodynamic applications and performance of HFE-7000 is being studied worldwide, as it is replacing the previous generation of refrigerants. No work however has been previously performed to evaluate the wear performance of HFE-7000 using nanocomposite coatings. The wear scar developed on each of the flat and ball samples was studied using a Scanning Electron Microscope (SEM). The micrographs show that a combination of adhesive and abrasive wear occurs when using uncoated steel samples. Micro-delamination is observed in the case of Ni–Al2O3 nanocomposite coatings accompanied by adhesive and abrasive wear. Wear volume of the wear track was calculated using a White Light Interferometer. Energy-Dispersive X-ray Spectroscopic (EDS) analysis of the samples reveals fluorine and oxygen on the rubbing parts when tested using coated as well as uncoated samples. The formation of these fluorinated and oxygenated tribo-films helps to reduce wear and their formation is accelerated by increasing the refrigerant temperature. Ni–Al2O3 nanocomposite coatings show good wear performance at low and high loads in comparison to uncoated contacts. At intermediate loads the coated contacts resulted in increased wear, especially at low loads. This increase in wear is associated with the delamination of the coating and the slow formation of protective surface films under these testing conditions.

scholarly journals The Corrosion and Wear Behaviors of a Medium-Carbon Bainitic Steel Treated by Boro-Austempering Process

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1959
Author(s):  
Man Liu ◽  
Wei Wang ◽  
Haijiang Hu ◽  
Feng Cai ◽  
Sheng Liu ◽  
...  
Keyword(s):  
Corrosion And Wear ◽  
Wear Property ◽  
Bainitic Steel ◽  
Wear Properties ◽  
Wear Performance ◽  
Medium Carbon ◽  
Electron Probe Micro Analyzer ◽  
Phase Coating ◽  
Kinetics Of ◽  
Electrode Technique

The effects of boro-austempering treatment on growth kinetics of borided layers, microstructure, and properties in a medium-carbon bainitic steel were investigated. The microstructure, distribution in coatings, corrosion, and wear properties of boro-austempered steels were characterized by a microscope, field-emission electron probe micro analyzer, scanning vibrating electrode technique system and wear resistance machine. The results show that the corrosion resistance of steels in different corrosive mediums was significantly enhanced by boro-austempering treatment. In addition, the wear performance of borided layers was improved by more than two times compared to bainitic substrates, proving a better wear property of samples treated through the boro-austempering route. The solubility of carbon and silicon in borides is very little. In addition, the dual-phase coating of FeB and Fe2B was observed, and the internal stress induced during the growth of Fe2B and FeB was almost eliminated. The preferential crystallographic growth directions of Fe2B and FeB are [001] and [010], respectively, which belongs to the (100) plane. Finally, the kinetics equation d2 = 0.125·t of the borided layers at 1223 K was established.

New Material Development for Offshore Mooring Chains: High Manganese Steel

2019 ◽  
Author(s):  
Neerav Verma ◽  
Andrew Wasson ◽  
Zhen Li ◽  
Harpreet Sidhar ◽  
Haiping He ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Oil Sands ◽  
Oil And Gas Industry ◽  
Corrosion And Wear ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Wear Performance ◽  
New Material ◽  
Mooring Chain

Abstract Oil and gas industry experiences indicate that corrosion and wear of conventional mooring chain is an issue, which can result in costly pre-emptive chain replacement in an offshore environment. There is a need to develop new material technologies with improved performance over conventional carbon steel mooring chains to improve chain reliability. This paper summarizes the development work on one such material — High Manganese Steel (HMS). A version of this steel has been utilized for superior wear performance at oil sands operation in Canada. This paper describes details on HMS chemistry optimization and lab testing for mooring chain application. In addition, Gleeble experiments were carried out to understand HMS hot deformation behavior and weldability. Development testing work on HMS material has shown promising results in terms of corrosion and wear performance, relative to carbon steel mooring chains.

Sign in / Sign up

Export Citation Format

Share Document