Results 51 to 60 of about 3,216 (204)

Resolving Nanoscale Heterogeneities in Lead Halide Perovskites Through Low‐Dose Concurrent 4D‐STEM‐EDX Mapping

Advanced Materials, EarlyView.
Mixed‐cation lead mixed‐halide perovskites suffer from structural instabilities linked to nanoscale heterogeneity. To probe this non‐destructively, a low‐dose, concurrent 4D‐STEM and EDX methodology has been developed. Examining a (FA0.83Cs0.17)Pb(I0.8Br0.2)3 film revealed a complex mosaic of coexisting crystal structures. Crucially, local deficiencies
Jinseok Ryu, Alexandra A. Sheader, Mohsen Danaie, David G. Hopkinson, Katherine E. MacArthur, Nakita K. Noel, Christopher S. Allen   +6 more
wiley   +1 more source

Advancing construction materials: material characterization for additive manufactured steel with directed energy deposition (DED) [PDF]

, 2023
LAUREA MAGISTRALEL'industria delle costruzioni ha tradizionalmente fatto affidamento su materiali come l'acciaio laminato a caldo per componenti strutturali e lo sviluppo di infrastrutture.
Maloku, Andrra
core  

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source

Investigation of novel trochoidal toolpath strategies for productive and efficient directed energy deposition processes [PDF]

, 2019
Directed energy deposition (DED) is an additive manufacturing technology where a moving energy source creates a meltpool on the surface of a substrate into which feedstock material is deposited to form the final part geometry. Maintenance of the meltpool
Soshi, Masakazu, Li, Geng, Odum, Kyle
core   +1 more source

Anomal Detection for In-situ Quality Control of Directed Energy Deposition (DED) Additive Manufacturing [PDF]

, 2022
One common cause for the rejection of parts produced during metal Additive Manufacturing (AM) is the presence of unacceptable defects within the part.
Juhasz, M., Hespeler, S.C., Lang, M., Halliday, H.S., Dehghan-Niri, E.   +4 more
core   +2 more sources

Laser Rescanning for Enhancing Mechanical Properties of Laser-Directed Energy-Deposited High-Manganese Steels

Micromachines
This study investigates the effects of laser deposition and laser rescanning (LR) on the microstructure and mechanical properties of high-manganese steel (HMnS) deposited by laser-directed energy deposition (L-DED) comprising 24 wt.% Mn.
Young Keun Park, Hyun Ji Nam, Yong Ho Park, Wookjin Lee   +3 more
doaj   +1 more source

A Solution to the Hot Cracking Problem and Anisotropic Mechanical Properties for Directed Energy Deposition FeCoNiCr Multi-Principal-Element Alloy

Metals, 2022
In this paper, a laser-based directed energy deposition (DED) technique is used to fabricate FeCoNiCr and CrMnFeCoNi multi-principal-element alloys (MPEAs).
Liufei Huang, Rui Li, Yaoning Sun, Denggao Guan, Chuanhui Liang, Chunli Jiang, Jun Chen, Dou Wang, Jinfeng Li   +8 more
doaj   +1 more source

Unconstrained Coordination of Pt Single Atoms on Distorted g‐C3N4 Enables Electronic Flexibility and Enhanced Microplastics Photoreforming

Advanced Science, EarlyView.
This study reveals Pt single atoms anchored on distorted graphitic carbon nitride, exhibiting flexible coordination and enhanced interfacial charge transfer. Combined spectroscopy and DFT reveal asymmetric Pt─N environments that promote photoreforming of microplastics into hydrogen, demonstrating a solar‐driven pathway for plastic upcycling with ...
Ting‐Han Lin, Yin‐Hsuan Chang, Jia‐Mao Chang, Ciao‐Yun Huang, Kai‐Chi Hsiao, Kuo‐Ping Chiang, Ying‐Han Liao, Kai‐Hsiang Hsu, Jen‐Fu Hsu, Ming‐Chung Wu   +9 more
wiley   +1 more source

Wear and material characterization of CuSn10 additively manufactured using directed energy deposition

Additive Manufacturing Letters, 2023
In the current scenario, a decline in the natural deposits of copper and its alloys has called for the efficient usage of bronze in mechanical components.
Sunil Raghavendra, Priyadarshini Jayashree, Domenico Antonio Rita, Giuseppe Piras, David Scheider, Marco Chemello, Matteo Benedetti   +6 more
doaj   +1 more source

Machine‐Learning Framework for Designing Stable Interfaces in All‐Solid‐State Lithium‐Ion Batteries

Advanced Science, EarlyView.
A data‐driven strategy is developed to discover coating materials for all‐solid‐state lithium batteries. Using calculations of interfacial reactivity, unsupervised pattern recognition, and machine‐learning prediction, the study identifies low‐reactivity compositional patterns and screens new lithium‐based oxide and polyanion candidates, extending ...
Sehyeok Park, Myeongcho Jang, Hun‐Gi Jung, Kyung Yoon Chung, Seungho Yu   +4 more
wiley   +1 more source