Results 31 to 40 of about 860,815 (299)

Tribological Properties of Nitrided Steels Lubricated with Fully Formulated Oils in Boundary Lubrication Condition

open access: yesTribology Online, 2018
Nitriding is one of the most popular heat treatments widely used in hydraulic sliding parts of automotive or construction machinery components. Since the nitrided steels shows great wear resistance due to its high hardness, it is widely applied to ...
Hiroto Aota   +5 more
doaj   +1 more source

Superconductivity in a ferromagnetic layered compound [PDF]

open access: yesPhysical Review B, 2000
We examine superconductivity in layered systems with large Fermi-surface splitting due to coexisting ferromagnetic layers. In particular, the hybrid ruthenate-cuprate compound RuSr_2GdCu_2O_8 is examined on the coexistence of the superconductivity and the ferromagnetism, which has been observed recently.
Shimahara, Hiroshi, Hata, Satomi
openaire   +4 more sources

Thin-Layer Chromatography of Guanidino Compounds [PDF]

open access: yesClinical Chemistry and Laboratory Medicine, 1977
Twelve guanidino compounds including, among others, glycocyamine, creatine, creatinine, arginine, guanidinosuccinic acid were submitted to thin-layer chromatography on plates precoated with silica gel or cellulose, respectively. Optimal resolution was obtained by two-dimensional chromatography on cellulose layers when the two solvent systems iso ...
Völkl, A., Berlet, H. H.
openaire   +2 more sources

EFFECT OF NITROGEN HYDROGEN RATIO ON PLASMA NITRIDING FOR 38CrMoAl

open access: yesActa Metallurgica Slovaca, 2018
Critical nitrogen hydrogen ratio in plasma nitriding was primarily investigated to get enhanced performance for 38CrMoAl steel. The modified surface layer was characterized by optical microscopy (OM), X-ray diffraction (XRD) and micro-hardness tester ...
Lu Song   +3 more
doaj   +1 more source

Evaluation of rolling contact fatigue behaviour of nitrided SCM435 in a contaminated lubrication

open access: yesNihon Kikai Gakkai ronbunshu, 2020
In this study, the rolling contact fatigue (RCF) life of nitrided Cr-Mo steel, which has three types of different nitride compound layers, was investigated under contaminated lubrication.
Tomoya SADAMORI   +3 more
doaj   +1 more source

Improvement on pitting wear resistance of gears by controlled forging and plasma nitriding

open access: yesJournal of Materials Research and Technology, 2022
In the present investigation, the use of a bainitic steel for forged gears applications and the suitability of different plasma nitriding treatments is discussed.
Rafael Luciano Dalcin   +6 more
doaj   +1 more source

Microstructure and Wear Properties of a Low Carbon Bainitic Steel on Plasma Nitriding at Different N2-H2 Gas Mixtures

open access: yesMaterials Research, 2021
For the first time, the influence of gas mixture on first damage resistance of a plasma nitrided DIN 18MnCrSiMo6-4 bainitic steel was investigated. Samples were nitrided at 500 °C with three different N2-H2 gas mixtures, containing 5, 24, and 76 vol.% N2.
Rafael Luciano Dalcin   +7 more
doaj   +1 more source

Increasing the load carrying capacity of highly loaded gears by nitriding [PDF]

open access: yesMATEC Web of Conferences, 2019
Nitriding is a common heat treatment process for highly loaded gears. A very hard compound layer with a thickness of a few microns is produced at the surface of the gear.
Koenig Johannes   +4 more
doaj   +1 more source

Layered Compounds. XXXV. Syntheses of Triple-layered Metaparacyclophanes [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1976
Abstract Six triple-layered [2.2]metaparacyclophanes have been prepared using general synthetic methods such as the Stevens rearrangement-Raney nickel desulfurization method, pyrolysis of bissulfone, and photo-induced desulfurization. The pyrolysis of bissulfone has turned out to be the most useful and convenient method for preparation ...
Naoki Kannen   +3 more
openaire   +1 more source

Improving surface hardness of AISI 1045 steels using melamine derived from urea

open access: yesHeat Treatment and Surface Engineering
AISI 1045 steels are medium carbon steels used in applications that require greater strength and hardness such as gears, railway wheels and tracks, crankshafts, rolls, axles and other structural components.
Elias Tadesse Fisha
doaj   +1 more source

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