Results 21 to 30 of about 7,614 (217)

Feasibility of orbital friction stir welding on clad pipes of API X65 steel and Inconel 625

open access: yesScientific Reports, 2023
Orbital friction stir welding (FSW) has been applied to clad pipes, which is certainly of interest to the oil and gas industry. In this context, an FSW system capable of performing sound joints in one pass with full tool penetration was developed ...
C. V. Amavisca   +7 more
doaj   +1 more source

Estimation of technological and thermobaric features of hardened steels machining: description of phenomena in the contact zone by cutting with blade tools from PCNB group BL

open access: yesТехнічна інженерія, 2022
So far, the development of modern tribology in the mechanical assembly industry requires the search for new tool materials, consideration of technological capabilities of cutting tools and determine the optimal characteristics and process conditions with
Ya.P. , P.P. , V.A.
doaj   +1 more source

Effect of nanostructuration on compressibility of cubic BN [PDF]

open access: yes, 2012
Compressibility of high-purity nanostructured cBN has been studied under quasi-hydrostatic conditions at 300 K up to 35 GPa using diamond anvil cell and angle-dispersive synchrotron X-ray powder diffraction.
A. Dewaele   +25 more
core   +4 more sources

The practice of using a cutting tool with PCNB group BL in the processing of hardened steels

open access: yesТехнічна інженерія, 2021
The industry is increasingly using the technological capabilities of metalworking using tools made of superhard materials, in particular polycrystalline cubic boron nitride (PCВN) group BL.
Ya.P. , P.P.
doaj   +1 more source

Bioinspired PcBN/hBN fibrous monolithic ceramic: High-temperature crack resistance responses and self-lubricating performances

open access: yesJournal of Advanced Ceramics, 2022
The high strength and toughness of natural materials are mainly determined by a combination of mechanisms operating at different length scales, which can be used as a strategy to reduce the intrinsic brittleness of ceramics. Inspired by the architectures
Shu-na Chen   +6 more
doaj   +1 more source

van der Waals epitaxy of monolayer hexagonal boron nitride on copper foil : growth, crystallography and electronic band structure [PDF]

open access: yes, 2015
We investigate the growth of hexagonal boron nitride (h-BN) on copper foil by low pressure chemical vapour deposition (LP-CVD). At low pressure, h-BN growth proceeds through the nucleation and growth of triangular islands.
Asensio, Maria-Carmen   +8 more
core   +1 more source

Gallium Nitride-Based Electrode Materials for Supercapacitors: From Wide Band Semiconductor to Energy Storage Platform. [PDF]

open access: yesSmall
This review focuses on capability of Gallium Nitride (GaN)‐based supercapacitors, bordering the advancement from porous architecture to novel hybrid nanostructures. It systematically investigates synthesis approaches and charge storage mechanisms that generate remarkable energy densities and competent cyclic stability.
Haider F   +7 more
europepmc   +2 more sources

Hard machining of agricultural machines parts

open access: yesResearch in Agricultural Engineering, 2013
For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more.
R. Drlička   +4 more
doaj   +1 more source

Effects of rotational speed on the Al0.3CoCrCu0.3FeNi high-entropy alloy by friction stir welding

open access: yesHigh Temperature Materials and Processes, 2020
Welding and relevant studies are indispensable to employ high-entropy alloys for practical applications. In this study, Al0.3CoCrCu0.3FeNi high-entropy alloy with single FCC phase was used to make “bead-on-plate” friction stir welds at different ...
Lin Po-Ting   +4 more
doaj   +1 more source

Phase boundary between Na-Si clathrates of structures I and II at high pressures and high temperatures [PDF]

open access: yes, 2016
Understanding the covalent clathrate formation is a crucial point for the design of new superhard materials with intrinsic coupling of superhardness and metallic conductivity.
Godec, Yann Le   +5 more
core   +4 more sources

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