Results 81 to 90 of about 7,907 (301)

Evaluation of microstructure and mechanical properties resulting from gas nitriding process for different types of steel

open access: yesInternational Journal of Applied Mechanics and Engineering
This work investigates the effect of the gas nitriding process on the surface layer microstructure and mechanical properties for steel 37, tool steel X155CrVMo12-1 and stainless steel 316L.
Faras Q. Mohammed   +2 more
doaj   +1 more source

Nitriding of nanocrystalline pure Fe induced by surface mechanical attrition treatment

open access: yesMATEC Web of Conferences, 2015
Properties of nanocrystalline (nc) materials are different from, and often superior to those of conventional coarse-grained counterparts. Unfortunately, it is still difficult to obtain “ideal” (e.g. full-density, residual stress-free, flaw-free, porosity-
Fu Yuzhu   +4 more
doaj   +1 more source

Cyclic Olefin Copolymers as Versatile Materials for Advanced Engineering Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cyclic olefin copolymers (COCs) are presented as highly versatile materials combining tunable synthesis, excellent optical properties, and mechanical robustness. Their potential spans microfluidics, bioengineering, and advanced electronics, while emerging self‐healing and sustainable solutions highlight future opportunities.
Giulia Fredi   +3 more
wiley   +1 more source

Formation of porous surface layers in reaction bonded silicon nitride during processing [PDF]

open access: yes
An effort was undertaken to determine if the formation of the generally observed layer of large porosity adjacent to the as-nitride surfaces of reaction bonded silicon nitrides could be prevented during processing.
Glasgow, T. K., Shaw, N. J.
core   +1 more source

Structural application of high strength, high temperature ceramics [PDF]

open access: yes, 1982
The operation of rocket engine turbine pumps is limited by the temperature restrictions of metallic components used in the systems. Mechanical strength and stability of these metallic components decrease drastically at elevated temperatures.
Hall, W. B.
core   +1 more source

A Modular Bioinstructive Platform Reveals Mechanistic Insights into Additive‐Free, Topography‐Driven Osteogenesis

open access: yesAdvanced Healthcare Materials, EarlyView.
Engineered microparticle topographies direct human mesenchymal stem cell osteogenesis without biochemical additives. This osteogenic commitment is driven by canonical Hedgehog signaling and followed by temporal IGF‐II engagement. Two‐photon polymerization demonstrates spatial control, enabling the engineering of topographical gradients that pattern ...
Fatmah I. Ghuloum   +5 more
wiley   +1 more source

Comparison of Various Nitriding Process of M 50 NiL Steel [PDF]

open access: yesArchives of Metallurgy and Materials
M 50 NiL steel is a variety of tool steel having high toughness. This steel is potential materials for several bearings of aero-engine. This steel is used in carburized condition. However, nitriding has several advantages over carburizing.
B. Venkatesh   +3 more
doaj   +1 more source

Ion-beam nitriding of steels [PDF]

open access: yes
The application of the ion beam technique to the nitriding of steels is described. It is indicated that the technique can be successfully applied to nitriding. Some of the structural changes obtained by this technique are similar to those obtained by ion
Salik, J.
core   +1 more source

Smart Face Masks as Wearable Respiratory Sensors: A Review of Sensor Technologies, Materials, and Future Directions

open access: yesAdvanced Healthcare Materials, EarlyView.
This review highlights recent advances in smart face masks that actively monitor breathing. By integrating humidity, gas, temperature, pressure, strain, and triboelectric sensors, these masks track key respiratory parameters in real time. The article summarizes sensor mechanisms, compares performance across studies, and discusses challenges and future ...
Negin Faramarzi   +7 more
wiley   +1 more source

Effect of Passivation Film and Nitrogen Potential on Gas Nitriding Behavior and Tribological Performance of 1Cr11Ni2W2MoV Stainless Steel

open access: yesLubricants
The dense passivation film (DPF) formed on the surface of martensitic stainless steel effectively improves corrosion resistance, but it also hinders the adsorption and diffusion of active nitrogen atoms during gas nitriding.
Kai Wang   +5 more
doaj   +1 more source

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