Results 31 to 40 of about 121,070 (292)

Surface engineering of Ti-6Al-4V by nitriding and powder alloying using a CW CO2 laser [PDF]

open access: yes, 2008
A comparison has been made of the laser processing of Ti-6Al-4V (IMI-318) alloy by (a) nitriding under a dilute atmosphere, (b) preplaced 6 µm SiC powder and (c) a combination of (a) and (b). At least six laser tracks were overlapped.
Baker, T.N., Selamat, M.S.
core   +1 more source

Influence of electrolytic plasma nitriding mode on structural phase state of pearlitic steel

open access: yesMATEC Web of Conferences, 2018
The paper describes results of studies of phase transitions in structural phase state occurring in the type 0.34C-1Cr-1Ni-1Mo-Fe steel under electrolytic plasma nitriding in nitrogen-containing water solution.
Popova Natalya   +3 more
doaj   +2 more sources

Effect of Gas Nitriding on Interface Adhesion and Surface Damage of CL60 Railway Wheels under Rolling Contact Conditions

open access: yesMetals, 2020
The influence of surface gas nitriding on wheel/rail rolling contact fatigue and wear behavior of CL60 wheel was studied on a new rolling contact fatigue/wear tester (JD-DRCF/M).
Qiang Wu   +5 more
doaj   +1 more source

Duplex and superduplex stainless steels: microstructure and properties evolution by surface modification processes [PDF]

open access: yes, 2019
The paper presents an overview of diffusion surface treatments, especially nitriding processes, applied to duplex and superduplex stainless steels in the last five years. Research has been done mainly to investigate different nitriding processes in order
Biserova Tahchieva, Alisiya   +2 more
core  

Nitride‐Reinforced Metal Matrix Nanocomposite Powders Production by Plasma‐Assisted Thermochemical Treatment of Intermetallic Powders

open access: yesAdvanced Engineering Materials, EarlyView.
This study proposes a new methodology for producing metal matrix nanocomposites in the solid state. The process involves the plasma‐assisted thermochemical treatment of metallic alloy powders. As a proof‐of‐concept, TiN nanoparticles are synthesized directly on the surface of FeTi intermetallic powder particles, enabling the development of the ...
Deivison Daros Paim   +4 more
wiley   +1 more source

Hard superconducting nitrides [PDF]

open access: yesProceedings of the National Academy of Sciences, 2005
Detailed study of the equation of state, elasticity, and hardness of selected superconducting transition-metal nitrides reveals interesting correlations among their physical properties. Both the bulk modulus and Vickers hardness are found to decrease with increasing zero-pressure volume in NbN, HfN, and ZrN.
Chen, Xiao-Jia   +10 more
openaire   +3 more sources

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Depth profiling analysis of the nitriding layer formed by gas nitriding of Ti13Nb13Zr alloy

open access: yesMaterials Research Express, 2023
The gas nitriding of Ti13Nb13Zr alloy was performed in a pure nitrogen atmosphere at 1200 °C with different holding times. The variations in the phase constituents, microstructure, and mechanical properties of the nitriding layer with depth were ...
Xiaolei Sun, Hanke Song, Yong Luo
doaj   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Rotating bending fatigue properties of medium alloy Cr and Mo nitriding bearing steel

open access: yesJournal of Hebei University of Science and Technology, 2019
In order to study the influence of chemical heat treatment on the fatigue performance of large bearings, plasma nitriding and rotating bending fatigue test are conducted for the medium alloy Cr and Mo nitriding bearing steel.
Nianlun YU, Shiqing SUN
doaj   +1 more source

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