Results 21 to 30 of about 749,068 (264)

Microstructure of ultrafine graded cemented carbides with cubic rich surface

open access: yesFenmo yejin jishu, 2021
The microstructure and mechanical properties of the WC‒10TiC‒0.5VC‒0.5Cr2C3‒12Co and WC‒12Co cemented carbides in the functionally graded and uniform structure were systematically investigated by sintering in nitrogen-rich atmosphere.
CHEN Jian   +6 more
doaj   +1 more source

Structure-Preserving Super Resolution With Gradient Guidance [PDF]

open access: yes2020 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2020
Accepted to CVPR ...
Cheng Ma   +5 more
openaire   +2 more sources

Mechanical and Corrosion Behavior of a Composite Gradient-Structured Cu-Fe Alloy

open access: yesMetals, 2023
Immiscible Cu-Fe alloys exhibit poor corrosion resistance due to different corrosion potentials between the constituent phases, which limits their application.
Bo Guan   +9 more
doaj   +1 more source

Effect of atmosphere on the fabrication of Si2N2O matrix composites [PDF]

open access: yesProcessing and Application of Ceramics, 2018
Si2N2O matrix composites were fabricated by solid/gas reaction in air or N2 atmosphere. The effects of atmosphere on the phase and microstructure of the composites were investigated.
Wei Li   +7 more
doaj   +1 more source

Broadband acoustic signal enhancement via gradient metamaterials coupled to crystals

open access: yesFrontiers in Physics, 2023
In this work, a phononic crystal gradient metamaterial structure (PCGMs) is proposed based on the strong wave compression effect coupled with equivalent medium theory to achieve enhancement and directional sensing of weak target acoustic signals ...
Sai Zhang   +4 more
doaj   +1 more source

High-Efficiency and Durable Flame Retardant Cotton Fabric with Good Physical and Mechanical Properties by Layer-by-Layer Assembly Polyethylenimine/Phytic Acid Coating

open access: yesJournal of Natural Fibers, 2022
In this study, intumescent flame retardant coating of polyethylenimine/phytic acid (PEI/PA) with gradient structure was constructed on cotton fabric through a facile layer-by-layer (LBL) assembly method. The LOI value of coated cotton fabric reached over
Xinhua Liu, Hailong Liu, Yinchun Fang
doaj   +1 more source

An ultrabroadband metamaterial absorber based on remarkable magnetic coupling via constructing conductive composite resonators and magnetic gradient gyroid structure

open access: yesVirtual and Physical Prototyping, 2023
Broadband electromagnetic absorbing is still a challenge due to the huge difference of waves properties in different frequency bands. Herein, based on the transmission-line theory, we propose an in-plane hybrid metamaterial absorber using coupled ...
Zhen Yang   +5 more
doaj   +1 more source

Formation of Gradient Structure in Rails at Long-Term Operation [PDF]

open access: yesMaterials Research, 2020
It has been shown by the methods of physical material science that long-term operation of rails is accompanied by the formation of the gradient structural constituents consisting in the regular change in relative content of lamellar pearlite, fractured ...
Anton Yuriev   +4 more
doaj   +1 more source

The Evolution of Strain Gradient and Anisotropy in Gradient-Structured Metal [PDF]

open access: yesMetallurgical and Materials Transactions A, 2017
Gradient-structured metals have been reported to possess superior mechanical properties, which were attributed to their mechanical heterogeneity. Here we report in-situ observation of the evolution of strain gradient and anisotropy during tensile testing of a gradient-structured metal.
Xiangde Bian   +3 more
openaire   +1 more source

Rheo-Squeeze Casting of High-Silicon Aluminium Alloy Pipes with Gradient Structures and Their Mechanical Properties [PDF]

open access: yesMaterials Research, 2018
Three different compositions of high-Si Al alloy pipe, with a gradient structure, were produced through semi-solid rheological squeeze casting, the microstructural characteristics of which were investigated.
Lu Li   +4 more
doaj   +1 more source

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