Results 31 to 40 of about 565 (210)

An Introduction to Wear Degradation Mechanisms of Surface-Protected Metallic Components

Metals, 2019
Despite the fact that ceramics and polymers have found numerous applications in several mechanical systems, metals and metallic alloys still remain the main materials family for manufacturing the bulk of parts and components of engineering assemblies ...
Pandora P. Psyllaki
doaj   +1 more source

Compound Layer Design for Deep Nitrided Gearings

Metals, 2020
Deep nitriding is used to obtain a nitriding hardness depth beyond 0.6 mm. The long nitriding processes, which are necessary to reach the high nitriding hardness depths, mostly have a negative influence on the hardness and strength of the nitrided layer ...
Stefanie Hoja, Matthias Steinbacher, Hans-Werner Zoch   +2 more
doaj   +1 more source

Effects of surface roughness and alloying element on surface morphology and tribology of low-alloy steel after gas-nitrocarburizing [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2021
This paper aimed to study the effects of initial surface preparation and Chromium (Cr) content on morphology and tribological properties of gas nitrocarburized AISI 1015 steel and AISI 4115 steel.
Naruenat Polyiam, Prasert Aengchuan, Nipon Taweejun, Piyamon Poapongsakorn   +3 more
doaj   +1 more source

Features of Cathodic Plasma Electrolytic Nitrocarburizing of Low-Carbon Steel in an Aqueous Electrolyte of Ammonium Nitrate and Glycerin

Metals, 2022
The possibility of using an aqueous non-toxic electrolyte of ammonium nitrate and glycerin for the cathodic plasma electrolytic nitrocarburizing of low-carbon steel is considered in this paper.
Ivan Tambovskiy, Tatiana Mukhacheva, Ilya Gorokhov, Igor Suminov, Sergey Silkin, Ilya Dyakov, Sergei Kusmanov, Sergey Grigoriev   +7 more
doaj   +1 more source

Improvement of Wear and Corrosion Resistance of Austenitic Stainless Steel by Combined Treatment Using Electron Beam Cladding and Subsequent Gas Nitrocarburizing

Advanced Engineering Materials, Volume 21, Issue 12, December 2019., 2019
Herein, a solution for locally increasing the wear resistance of austenitic stainless steel by electron beam cladding of a Co‐based alloy and subsequent gas nitrocarburizing is elaborated. Furthermore, the corrosion resistance can be improved as a result of the combined treatment process.
Eugen Hegelmann, Philipp Hengst, Paul Hollmann, Jens Thronicke, Anja Buchwalder, Christian Schimpf, Ralph Hunger, Rolf Zenker   +7 more
wiley   +1 more source

The Contact Mechanics of Novikov’s Surface‐Hardened Gearing during Running‐in Process

Advances in Tribology, Volume 2018, Issue 1, 2018., 2018
The article is devoted to the analysis of the state of the contact surfaces of the higher kinematic pair in the general case of relative motion, that is, in the presence of rolling, sliding, and twisting, which is characteristic of Novikov’s circular‐screw gears.
Alexey Beskopylny, Nikolay Onishkov, Viktor Korotkin, Michael M. Khonsari   +3 more
wiley   +1 more source

Friction Characteristics of Machined Metal with Different Surface Morphologies

Advances in Materials Science and Engineering, Volume 2015, Issue 1, 2015., 2015
This study examined the friction characteristics of SAE1045 medium carbon steel processed by milling machining (MM) and abrasive jet machining (AJM). Friction experiments were conducted with variations in load and friction distance. Experimental results show that micro craters produced by AJM help retain lubricant on workpiece surface and thus decrease
Hsin-Min Lee, A-Cheng Wang, Yan-Cherng Lin, Allan C. Peterson   +3 more
wiley   +1 more source

The friction behavior and wear mechanism of RV reducer gear steel (20CrMo) subjected to three different heat treatment processes from −20 °C to 100 °C

Journal of Materials Research and Technology
The gear friction pairs in RV reducer always withstand a broad range of temperature, sliding velocity and heavy load. In the research, three types of heat treatment methods (carburizing + quenching, nitrocarburizing and high concentration ...
Jian Guan, Daqi Wu, Liuming Zhang, Gang Wang, Wenjie Chen, Wenjie Lin, Hui Zhao, Pengpeng Bai, Yu Tian, Wei Song   +9 more
doaj   +1 more source

Deformation-Oxidation Activation of the Surface Layer of Carbon Steel to Accelerate Gas Nitrocarburizing

Механика машин, механизмов и материалов
The effect of deformation-oxidation activation of the surface layer on the kinetics of gas nitrocarburizing was investigated. It was found that preliminary plastic deformation of steel and surface oxidation lead to the acceleration of the gas ...
Valerij M. Konstantinov, Vladislav A. Leshok   +1 more
doaj   +1 more source

Microstructure of Low-Temperature Gas-Carbonitrided Layers on Austenitic Stainless Steel

Metals, 2019
This paper presents the results of microstructural examinations on gas carbonitrided layers using scanning electron microscopy (SEM), wavelength dispersive spectrometry X-ray microanalysis (WDS), magnetic force microscopy (MFM), electron backscattered ...
Paweł Kochmański, Jolanta Baranowska, Sebastian Fryska   +2 more
doaj   +1 more source