Results 1 to 10 of about 179,629 (298)

2000W Blue laser directed energy deposition of AlSi7Mg: process parameters, molten pool characteristics, and appearance defects

open access: yesVirtual and Physical Prototyping, 2023
Aluminium alloys are difficult to be manufactured by directed energy deposition (DED) with the widely used infrared laser because of the low absorptivity.
Zijue Tang   +9 more
doaj   +1 more source

An In-Situ Formed Tunneling Layer Enriches the Options of Anode for Efficient and Stable Regular Perovskite Solar Cells

open access: yesNano-Micro Letters, 2022
Highlights It is first disclosed that the key to the efficient regular Ag-perovskite solar cells (PSCs) is a tunneling layer (silver iodide, AgI) that is in situ formed by the natural reaction between Ag and the migrated iodide.
Xuesong Lin   +10 more
doaj   +1 more source

Effect of pretreatment on microstructural stability and mechanical property in a spray formed Al-Zn-Mg-Cu alloy

open access: yesMaterials & Design, 2021
Aluminum alloys fabricated by spray forming (SF) technology are commonly followed by hot-working without heat treatments. A new approach that is a pretreatment before hot-working is proposed in the present work.
Zhiping Wang   +8 more
doaj   +1 more source

Realizing reversible phase transformation of shape memory ceramics constrained in aluminum

open access: yesNature Communications, 2023
Small-scale shape memory ceramics exhibit superior shape memory or superelasticity properties, while their integration into a matrix material and the subsequent attainment of their reversible tetragonal-monoclinic phase transformations remains a ...
Wangshu Zheng   +7 more
doaj   +1 more source

State of the Art of Non-Invasive Electrode Materials for Brain–Computer Interface

open access: yesMicromachines, 2021
The brain–computer interface (BCI) has emerged in recent years and has attracted great attention. As an indispensable part of the BCI signal acquisition system, brain electrodes have a great influence on the quality of the signal, which determines the ...
Haowen Yuan   +7 more
doaj   +1 more source

Understanding the creep property of heat-resistant Al alloy by analyzing eutectic phase/matrix interface structures

open access: yesMaterials Research Letters, 2023
Interface characteristics are of great importance in mechanical performance for multi-phases heat-resistant Al alloys. Herein, Al3Sc precipitates were created at both Al/Al9FeNi interface and Al matrix inside Al–Fe-Ni eutectic alloy by microalloyed Sc ...
Zeyu Bian   +7 more
doaj   +1 more source

Fabrication of metal matrix composites under intensive shearing [PDF]

open access: yes, 2008
Current processing methods for metal matrix composites (MMC) often produces agglomerated reinforced particles in the ductile matrix and also form unwanted brittle secondary phases due to chemical reaction between matrix and the reinforcement. As a result
Barekar, NS   +4 more
core   +1 more source

Effect of interfacial thermal mismatch on mechanical properties of metal matrix composites

open access: yesFenmo yejin jishu, 2023
The interfacial thermal mismatch stress will generate at the reinforcement/metal matrix heterogeneous interfaces during the cooling process of the metal matrix composites (MMCs), due to the large mismatch of the coefficient of thermal expansion (CTE ...
HOU Yanan   +3 more
doaj   +1 more source

Uniform Spherical Graphene/Monocrystal-Copper Powder Fabricated by the Low Wettability of Liquid/Solid Interface

open access: yesKONA Powder and Particle Journal, 2018
Uniform spherical graphene/monocrystal-copper powder is fabricated by melting bulk laminated composite. Graphene, in the form of reduced graphene oxide (rGO), is uniformly dispersed on the surface of monocrystal Cu particle. A mechanism is proposed based
Jimin Lyu   +7 more
doaj   +1 more source

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